sharp sf 7700, 7750 sm
TRANSCRIPT
—...—-.—. ,.- .-,.... — .——.. ....... ..—.. .. . ‘m ‘“-’--sF-77m k.SF-77W
SHARP SERVICEMANUALg’ CODE: OOXN750S~
mj.“ ‘.-
SF-7700 ~MODELSF-7750
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v CONTENTS %
[1]
[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]
BASIC SPECIFICATIO~S ....................................................................... 1-1UNPACKINGAND INSTALLATION........................................................ 2?1INSTAL~TION OF OPTIONAL EQUIPMENT .......................................copy QUALITY ADJUSTMENTS
3-1........................................................... 41
SUPPLIES ................................................................................................ 5-1E~ERNAL AND INTERNAL STRUCTURE ............................................ 6-1COPY PROCESS 7-1....................................................................................PAPER FEED UNIT ................................................................................. 8-1HIGH VOLTAGE UNITS -.......................................................................... 91OPTICAL SYSTEM .................................................................................. 1o-1DEVELOPER UNIT ‘................................................................................ 11-1SEPARATION UNIT ............................................................................... 12-1FUSER UNIT .......................................................................................... 13-1OTHERS ................................................................................................. 14-1MAINTENANCE ..................................................................................... 15-1SELF-DIAGNOSIS ANDTEST FUNCTIONS ........................................ 16-1
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,,1 SHARP CORPORATION
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[1] BASIC SPECIFICATIONSSF-775O SF-m
Type: oea~ +
Kindsofo@inals: Shaate,’wOriginalsize: 11”x 17 (M) maximum.. +-y tize: I 11”x lr(A3) to&l& x $1/2(A6} 1+
ASaeriea ItiaerieaNormal Rsduse Entarge RadM mbrgs
Mfsortrait 15sWmin IOshtimin IOsmmin 8~Mxll”_ 15~ IO_min IOdf-inMportrait 15Sh@minIOshwmin los~min al~”xll.m gs-rn 8~~mm g-~ffl
Mland~pe 9ah*min 8sh~min 9shWmin al~x~b. g~ axmin a~nM-pa 9sh&min 8sh~min 9sWmin ll”xlr 8
84~ 8~min 8_in
9sh~mrn ashtimin 9s-min sl~xal~~ti ls~ 10~ lo~A3 8shwmin ash~min aswmin
15 afreawmh(&l& x 11”(M) ~M)
Warmuptime:
k~yirtg:Paperfeedsystem:
SO~ (atratedv-e and~ temperatureof58 degreesFahrenheit,(2odagreaa~), andr~five humi~ of65%.
Norma 1:1 *1%Red*. ~m * t%
E~~t ~** 1%Programmti steps:M% to 154%,91‘inoramanfaof 1% e-(Fwadrati)r .- ,ABMes Iti-
141%,IZ%, 115% 141%,129%,121%100%,s6%,al%, 70% 100%,95%,77%,64%
AExposureSystem:Davel@ngsystem:Tonersum:
Pftotmndudor:
paperseparationsystem:Cleani~’ayafam:
Originalalignment:
Chargesystem:Transfersystem:
pqr Transportsystem:Diwhargesyst~:
tightaourm:
PWer rquire-:
powermnaumpfion:Fusingsystem:
physi~ldimenai~:Machineinstall~i~ area:Nxht:
Separationwfifttheremovert- andseparation~ler. ~
Wade~aning of‘tie drum.
Fronttime, leftsidedignad.
NegativeM mrorta.
- di~arge @ maanaof ad~rge lamp.Halogenlamp.
IWI 10VAC,~ti~Z120VAC,60Hz200VAC,60Hz220VAC,WSOHZ240VAC,50Hz
Max.1130W,1180W(includingSDFandSorter),Avsmgeduringstand~lraa~. 130W(20-25m)
Heatrotler~U~r heaterdlar: Teti -tedG heaterroller:Silti~m (23.67wtix 550mm(21.~ deepx 325mm(12.~ high
1500mm(~ W x 1200mm(4S~deepapproxima~yWg. (M IM)
—
.—
‘-+-
A ~ ma~ “-” intheSF-~00 @umnb thatmeti~n ietheaamaasthatofsheSF-~~ enda ma~ “-” idmtaa matisntiimrporatad intheSF-77OO.
- ,,SF–7700SF–7750
Accessories
>..-. ..~.:..,-.....,.
ODtions
! SF-71WlB(m_tinter) I t I
SF-mOD(mm*) +
. CaeaeneesF770A3E(M),smoB4E(s4) ‘SF770A4E(A4);SF770AR(A4R)S~OEC(17XllV, S~WC(14*x8’h~S~W(81h”xl17,S~ (8*A”F11-R)SWOAC(8qHX53hTS~OUCE(ufi_)
,.
1 –’2
.--7,7. : . . .. . .. .-4:“-”’”-[2] UNPACKING AND INSTALLATION1. Unpacking
c(1) Own the cation in the followingsquence.
‘\ ~ Cut the PP bands.‘ @ Remove the ub~er mckina case.
@ Remove the top paking ~ssy.@ Remove the ~ffe pack.@ Remove the copier ~ from the bttom case.
(0
t
UpperpackingGas
A@ssaoqmntsinw(casssrte,bay.mronawiredea~w, instrutiionmanual,installationpmsdure)
tigind war w~bn
PP
2. InstallationInstallation requirements:.Please note the folloting requirementswhen inst~ling the copier.
(1) MachineEnvironment@ Avoid installationin direcf sunlightor bright locationsnear a
window.Directsunlightmay~use the plasticcomponentsandtheorigin,almvertodeform. Frostedglassmayalsoproducethe~meeff~.
@ Avoid in~latirr in a ~ damp @SCSor ~re @ -esin humid~ occur (for exam~e; near an &r conditioner).~is may w _ to tipan or frost to occur iriside theqier, and may lead to a misfeedartd a deteriaratin in qyquality.
me recommended~rtimental condittis are:~ to 25 degrees C (88 to V degrees F.), 85k5%RH. menamind envimment condtionsare:15 to W dagrees C. (59 to 88 degrees F.), ~ to 85%RH.K the copier is to & itiM, in an area of highertem~ature,the hum~ity must be mar. M*; ff the tempenture is Mdegrees C. (95 degrees ~, the humid~ shauU be 55%.
%RHI .
G
“ In---1a --------- -------. : --
:Hum idity I
II
a I.------ :-1 ,,
Temperature
@ Avoid inWktion in a pl~ where dust or vibration isencountered.~Sf d~if inrddeof the @er may le~ to adete~ratfon ofmpy qud~ or machine~.
,, ...
@ Da not in~l the capieron an un- or uneven surface.me@er must be placed on a level surface to permit properoperatin.
“a”’@ ~vg:nstallation ina- wherethe ventilationoraircirculation
@ Never ~rrstdlthe ‘copier near inflammablematerials or in thepreaerrceof ammoniati,mes.Installationneara diuo copymachinemay leadtoadete@rationof copy qualityor a matiina m*@onl
,
2-1—.. ..~ ——..... . . ... . .. .—.. .. ....—- ---- ----. ... . . . . .
~-m.SF=7750
@ Installthe copier near the wall ouffet.
(2) $pace aroundme copierThe mpier requires at least locm (47 of clearance between therear side and the wall. This space is requiredfor propercoolingfanventilation. Adequate working space around the machine shouldalso be allowedfor.ease of operationand sewice.
(3) CopiertibleInstall the machine on a level surface. Place a water level in thecenter of the originalglass and check level front to rear and sideto stie.
NOTE: The toner densityand copy quafitymaybe affected unlessthe machine is installedon a level surfa~.
(4) Powersoume@ The powersupplyline shouldhave a~acity of morethan 15A,
capaMe of supplyingmore than 90% of the rated voftageat fullload.
@ Do not use an etiensfon cord or operate any other ~uipmentfrom the same wall outiet.
(5) Groundconntiion@ Use a proper~ grounded(three prong)wdl outietthat meets all
nationaland loc~ elecfricd’code‘_fmtions.
3. Releasing locks ‘@ Own the frontpandl.@ Remove the top right, rear comer ~inet,
Top right,rearcornercabinet(remove)
\ Processingunit ,Q-1 unit
Conn@or (di=nnect) & unitsupportbar
2–2
@ Dimtithetwoconrtectom forthe~ti~i unitand processingunit.
@ Release the optical unit Id l~er (we it in the directionofarrowA), and lift the opticalunftopen (a= B).
CAUTION: Wn opening~ dOSw me ~ical unit use cautionto ensurethat you do not dam~e the unit or hurtyour chands. Make sure ttiat you grasp it firrniyand move itSiOWiy. [f ~u let it drop d~age ~ aur to the unitor it may close on your hands.
@ Lockthe opticalunitopen with the supportbar.@ Removethe bottomcover from the opw unit.
MirrorbeeeC H ~(remve) Y
j“ L
@ Removethe mirrorbase B lock &rew. (W-BZ~FC~@ Removethe lens fockscrew (SF77W on~). (~-BZW78FC~@ Re~ve the mim base C W tape.@ Remove the frame protector.@ Re- m @- unitbow COVW.NOTE: The copiermustbesef inthefol~rrg conditionstorehte
it.●*t the W& in W fadu~ mode (1:0.M).
Turn poweroff.Sacurethe Iensandthe mirrorbaseC withthe Ienslwkingscrewand mirrorbase C Ming tape.Note that the COX was shippedout of the facto~ withthe lensand the miw base C Wed at the 1:0.84 reduceposition.The S~OO, however,does not need the lensmed.
●Secure the mirrorbase B..Irrstall the fram protector.
4. Installing supplies(OPC drum,drum ~aning Ne, deve~r, toner and Heat rollercleaning‘roller.)
(1) *velo~unR removal@ Open the frontpanel.@ Pull the dev@operunitWing lever forward.
Dev*’unif Ming lever
., .. . .
- “-SF–77WSF-77m
Mainmotorrotor@ Pull the devebpar unit wt.
1-
‘-””) Y=”Satscrew(rsrnova1
t ‘.Deve10
per unit
The devehper unitwiticatchand stopwhenif ispulledfar enoughout for toner filling.To remove the unit,push the davelo~ unitrelease lever and supportthe bottomof the unit with are handwhile liftingand continuingto pull the developerunit out.
@
(2) OPC dwm, cleaningblade installation@ Remove the front frame OPC drum shati me OK drum and
drum cleaning blade are replaced every ~,~ copies.) (inst@l)
Drumcleaningblade
\
@ Remove the OPC drum protectivesheet and fft the OPC drum(gear si@ towardthe rear frame of the machine)ontothe drumshaft, Be CAREFUL not to touchthe drum surfam.
NOTE: The white powderon the bfade and drum surfacereducesthe frictionbetweenthe drumandthe Made. Instsflthe parts‘ss is, WITHOUT REMOVING THE POWDER.Becarafulnottodarrragati~rf~of~ Madeordmm.
In case more powder @ ~uired, use ~ng powder(UKOGWS~ and ~ it over the OPC dmm sutiaw.Lack of the powderincr~ frictionbetweenthe drumand thecleaningMade whichcs~ ~ Nme t. fl@~~ ~ ~at~tb drum surfa~.Stsins.on the dti surfaceshouti be cleaned away with a drycloth. If it ware to remains on the drum sudace, wipe if awayMth a cloth~ig~y dampenedwithwater,than wipeitdry again.Never try tousa H or thinner.It may harm the OPC layer.
~en r@a~ng the drum or drum cleaning blade, mer theoriginaltranspotiguide,transfercoronaunit,separationunit,andthe PS rollertih asheetofpa~.in Ordertoavoidtonerscatt~~from the cleaner unit to fal ~~ Me wanspR gu~e, ~ansfercoronaunit, PS tiler, and separationunit.
@ Installthe frontframe drum &aft.@ Turn the main motortwo or three turnsin the directionof atiow
C by hand to work the dmm and fide together.NOTE: Do not turn the main motorrotorin the dir- opposite
to the arrowC. Doingso till cause the drumcleaningbladetoturninreverse,~ssiblyreWting indamgetothe drum.
@ InStallthe Msnk lamo Mt
//Connector(disconnect)
(0 I iy Blanklarrrpunit(remove)
‘rew(r’move)/ v\/ Mai; ~na gutie
OpC drumshaft(remove)
@ Remove the main corona unit.@ Remove the blank lamp unit.@ Remove the main comrra guide set Wrew, and turn @ main
coronaguide in the directionof the arrowA.@ Installthe OPC drumclesnerblade ontothedrum cleaningblade
holderusingthe two blue screws. (~ blue screwsare locatedon the main cleaningblade holder.)
@ Return the main corona guide to the original ~sition (in thediraotionof arrow B), and secure it in place.
@ ~:~essa the o-l ~nit supportbar and gentlycIosethe opti~l
@ ~nn~ the connacto~ (2) for the’opticalunit and procs~r.@ In$talithe top right:rear mrner cabinet.
,W -.m.-:.v~-.. ...-. --.-.. --— +--. -,.. . . ....-.—---.. .-.. ... .. -.-—-.. .-.---- . .. . . ... . .= .-. . .-..-—--=:--_ *--m-
1, ,~
2-3
SF–77WSF-77m
[)3 hstalling the heat rollercleaningrollerandthehemister cleaningroller.
@ Open the front panel.@ Lift the upper hdf release lever end open the upper hti’of the
my mafiine.
@ Remove the heater war.
Upperhatirekase lever\
Therrrrietorcleaning~%
@ Remove the paper exit guide assy (fueerunit).
@ ln~l the lowerheat rollercleaningrolbr onthe paperexitguidaasey.
AHeatrollercleaningroller
1
. . . .
-- -
@ Replau the paper exit guide in the @y machine.
Lower fuser Roll. “ “.–r - ---—
?
3a1mw,=The.ietorWing_er , , /“
\> ‘ ‘-’--–’””
~%’g
\\\
.—
@
~.,- ‘, -
L1
@ Installthe k’arings onto the thermistordefiirtg rollershaft.@ Inetdl the Waning dler es show in the dagrarrr.@ R~a~ the heater’~ver.0 c~~ tie WY mashine.
(4) Loadingthe deveb~ andtoner.
@ Unplugthe mnnedorforthe torrerhoperunitfromthe developer (unit.
Tonerhopperunit
/,/;/
Lt
NOTE: Make sure the lower seDaratoroawls are on too of the A
~nrtador(remove)flower heatroller,
u x
@ Romte the toner hopper unit in the dir~ion of arrow A, andmove it towardsarrow B.
@ Pour ail of the deveb~r into the devel~~ unit while turningthe MG gear muntemi~
((in the dir-on of the arrow).
2-4
.-, .-
NOTE: The bl=k toner is mntained in a beg, mb developer is~ntainad in a bottle.
@ Installthe toner hopper unit onto tie developeru&.NOTE: The developer rover sheet on the toner hopperunit must
be over the shield sheet on both ends of@ MG roller.
Improperinstallationof the tonerhopper,maymuse a mpy
(Qquality problem such se background or stains due to=ttering toner.
sheet
Shidd sheet
Tonerhopparunit
Alignthe tab on the tint frame side of the devor unitwiththe indenton the toner hopperunit.
Tonerhoppar’unit\r // .’
&“. ‘51”>//>
f
/;’Guideplate : .b&-
.\
Align the guide plate on the rear @frame side of the toner hopperwith the bottomof the mnnmor Developeruniton the developer unit.
w“”’ “m-7700m-7750
(5) Installingthe -ste toner mlW bttle-use the waste toner full det- fu- is not i~ted inthis model, the ua waste toner boti must be @ti with anew one or the waste toner mustbe emptiedfromthe bottle. If this=ution is ignored, it muses the toner feed spri~ in the *aner-on to Imk and may destroythe gear and -.@ Installthe waste t- dl~ boti in the *.
A maximumof 100 gramsof ~ ~ be sontainedinthe wastet- ~1~ me. A* 7,500X ofM paper- 6% tonedarea will _ 100 gramsof waste toner.
(6) Adjustingthe tonersensorlevel@ Open the frontpa~ and turn the power@ on.@ &Wte test -remand 25.
(Test ~mand 25 ex~on p~ure)
c+ ‘+ ‘+ p+@+@+ ‘w@ Manua~ astuatethe ~-h (DS~ to stirthe deve~r for
a periodof three mwea.@ After etirnrrgthe de- for three minutes,push the P.RINT
Switti to performtest ~mand 25 m ~. Turn the tonersensor lev@ ad~eting VR ~ee until the toner, emptyirtdisstor~EL) lights.
I kd~’unit \i
~t& (DS~ - Manuatlytiate.
@ Slowly turn the toner sensor Ievd adjutit VR mun-temloskwiseuntilthe toner empty indtitor is@ off.
(~ Add tonerOpen the toner hopperrover and Wr the toner in evenly.
2-6
I
,.[,
SF-7700SF–775O
5. Cleaning the corona wire@Clean the main mrona unti withthe Drovidedcleaner. and then
&install the main @ron,aunit in the bpy machine.
6. Local mode programmingSomemtrol programsmayk reviaedtomeet Id wuirementa.Use the test mmmands 79, and 78 to reprogram.@ Testmmmand79. (Uaedtoaaagnthe modelandblveraion.)Performthe followingmmmand ant to setup the desired mode:c + P + o + P + ❑ +~+ h (withthis, the previously~rammed mode num~r is dis~ayed withthe ready lampturnedON) + ❑+ a (enterthe desired~ digitmodenum~r) + _(the new mode numbr is displayedand the ready tip goes out)+ C (the teat mmmand is now cleared).
@ Lift the u~r hdf release lever and ~n me ~py machine.@ with the transfer arena unit stilt i“st~l~, clean the transfer
mrona wire with the providedcleaner.
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2.= sue~efwem2 13 100V* ● swy -~ (otherthanUS) _tiOn isset=
17 mvaarias
kl I 02 1,~oovsarias(us) \
Ramsrfr
-hti*[email protected]~.
2–6
. ..m
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. .’.—.’.-;......... -U.-s:.,!...------ ...:..
@ Test mmmand 78.(UW to inputthe data (use of optionsdouble munting of munter, or singlecountingof counter)).
Performthe folbing Hmand ent to setup the desired mode:&c ~ p + o + P + ~ + ❑ + PSW (with this, the previously
programmedmode number is displayed‘withthe ready lam turn
bON) + a+ a (enterthe desiredtwodgit * num~r) + “PSW(the new mode number is displayedand the readylamp ~ out)+ C (the test command is now cleared).
SF-7?OOSF-775O
Data wmsnffseder Sotier “Quntaroountingmethodsetti~ installation inatdlation Total Wintenanm
Oourrter writer00 No01 Yes No
02 No Ooublemunt
03 YeaYes
10 No OouWwnt
11 Yes No
12 No s~bwunf
13 Yes Yes
20 No21 Yea No
22 No Dou*sount
23 Yea Yes
30 No si*counf
31 Yea No
32 No Singbsounf
w Yes Yes
“Whenthedoublecountmodeistied, a si~le IIPx IT (orAS)~ willbemntsd astwo~ias bytherenter.NOTE:Thesystemwillnotfunstionp-y if the_ saffi~ arenotmade.
7. Copy check”
Copy checks must be Wnducted at-each maintenance.
(1)Imagedeviationtowardscopyingdi-ionitmustbewithin2mm.
(2) Void area and imagelossTake copies in the normal magnificationratiOto ensure that voidarea and image loss are withinthe given limitsbelow.. Lead edge void area: O-3.Omm. Trail edge void area: 8.Om’m,m=.● Lead edge image lose:O-3.Omm● Trail ~e image loss: 8.Omm,m~.
(3) Copydensity@ Placefoursheetaof blankwhitepSPar,120mm x 420mm, (4.75”
x 17”) on top of. each other ~ place the test ch~(UKOG-008XS=) or KODAK gray we beside or on it, sothat the gray scale @@n of the teat ch~ can be OOpiad.
Test&art (UK~-0089FC~ orKODAK.Wayde
I / I I/
L Sheetsof whiepaper
a~ut 420mm(1~ 1
@ Set the ~ d- ~n level to the middle.When the doorawitch(DS~ is fumed off by openirrgthe fro~pand, the status“CH” is di~ayad in the copynumberindicator@ fourout of five copydensityitititors will xe’wittr theremain~ one blinking.w blinkingindator indicatestie ~density~ level tirr~ smmyed, and if is possibleto~acf anotherIevd usingthe copy density@vetml key.Each M of the copy *aify correctionIavd is ~nfad byM, L1, N, Dl, D2. In order m _ another copy densitycorrectionIeW, if is neceasa~ to set the key in the center (N)level - N bknkingand the rest are activat~. ●
@ Set the.copydensityIevd to”5.O.Make a copy and ensure mat the gray -e strip0.2 (2) has alightbackgroundand 0.3 (3) ia disfi~ @ad.
@ Set the copy densityIevd to 1.0.Make a copyand ensure that the gray me strip0.0 (A) has alightbackgroundand 0.1 (1) is diati~ copied.Note:thatthefigureshownwithinparenthesisisfti KODAKgray*.
(4) *solutionMake one ~y at m~n-n ratfosof 1-.54,1.0 and 0.S4. Makesure mat their *aolutions are withinthe given limitsbefow.
Wmoda(loo%) 5.OhNmm 4.51ina#mmEnla~eti(lO1-154%) 5.OliWmm 4.SltimmRmrnods(ss-so%) 4.51Wmm 3.61i#mm
) Rd~mods(68-75%) I 3.61Wmm I 3.21Wmm I1~mods(74-a4%) 3.61i~mm 3.21itimm
Whenmorefhana halfofalineoffhet~tcha~is distincf~copladit is assumedto be win resolutionlimits.
(5) SkewEnsuremat skew is withintie [email protected] above 84 (14” x 8-1/~: 2mm, m~.Ske above A4 (11” x 8-1/~: 1.5mm, ma.
2-?w~’,*Y -.-, x---,- ..-—-.. ..--..— . . - . . . . . . . . . . . . . . . . ~. . . ._-, .
\
SF-77MSF–77%
[3] INSTALLATION OFOPTIONAL EQUIPMENT
“1.SADF (SF466)
1) Unpacking~n the_ in referem to ~ iflustretionb-.
● *inal f+ tray x 1
● Tray angk, F @ R’ x 1 e~.
o
B. Inetelfatfon ~ureU@~ the AC power auppfy M to the -y machine kforepr~ing wtthSF* installation.@R emove the -merit war fmm the @py machine.@ Remove top rightrear rover@ rear @inet.@R ernovethe two has ~ews (white).
,,’
3–1..----
@ Applythe mylarsheets(included)onthempyma~ine=~wnbelow.
i
\
@ Remove the * -ewe for tie Wument glass ragist~ti~guide from the oopy maohine.
@ Remove the registrationguide by liftingthe frontend as shownby the avow (0) and then pullingit to the front.
@ lnstallther~istrati~ guidewithmsion ontotk~ymti.
(e
@ Open the frontrover of the ~ mine.@ Di~w the two oon~ for the - unit and prooeSS
unit.
3-2~-.-y .---.. -.,..-...
-———
\
‘ 1,‘k@ PI% the tr~~rt - ontome ~ m~hine whiieg“i~w
me hlnge8onto-the wxa ~~ of@.@’ InStal ~e r~~ning fOUr~x8 hinge holdi~ &ewS.
b not tightenthem at this time.
@ Press Ightly on the transpoR unit at the points of the errowm-. ~lS willSetie the magnets(front)and the rib (feedside)~to the ~py m~ine.
@ ~ghten the two (2) hinge wrews on ewh hinge as shown.
3–3
I. . . . -,.
. .-’. ... < -’
. . . . . ...... .. ... ... ,,........-.-.—\
.... ,.-—...--......———. ... ... >
“e ‘
e
@ Loosen the stopper=ews in the trartspo~-n hi~es andlowerthe stopperto release the hi~e IX.
@ Retightenthe Wrews.
@
/\ \.--\/
\Hinge
\,’
@ COnnti the 2-pin Wnn@or of the harness (white and blackwires) of the transpofiunit to the CN2 m-or of the powersupplvunit.
@ Conn~ the 3-pin mnneotor of the mpy retina ~:~~p~yharness(whiteand biati wir~) to the CN1 ~ .pins are used on the 3-pin ~nn~or.
@ ConnW the &pin wnaoroftheti~~h tothe~~n”wn@r on the bad of the -y mach{rre.
@ s~re the green ground wire to the -y ~i~ with meProvtdedscrew (Mx6 brass mew WM s- washw):
—@ Mountthe powersupplyunk with the Mx8 ~ews withspring
and standam washers (supplied).
r - -.-,
SF-77~SF-7760
3-4.- . .. .-..., .- .-.. . . . -. .- .
., .
SF–7700SF–7750
@ Set tray angles L and R firmlyagainst the bottomof the SADF: tray. S~re the angles with the provided*rews (M4x6 with
ny~ washers). \-.
1
(an = 2 digitdafs num~r)~e ready indi~tor will gOOUtandfhsWwtitasettingwill ~s~n in~e~pyquanti~display.
NOTE: * sure not to ~ti the size det@ion h&ss behindtherear abine~
3) Looalmode programingMake settingsafter instdtafionon the -y machine~ptete.NOTE: The system will not futiion properfyif the oorr~ setting
are not made.
O~ON SELE~ON AND COUNTER MODE S~NG.Make the follwing adjustmentswhen a semi-automaticdmumentfeeder (SF-) or sofier (SF413) is instdied or when changingeither the tot~ Writer or maintenme anter mode from single-nt to double ant or from dou~e to single.IMetfsod]@ Turn the mpy machine ~er ON.@ Push the followingto ex~te test ~mand 78. C + P + O+
P +~+~+ PswWhen the ready lamp lights the current stored parameter isdisplayed.
3-5
@ Pushthe clear key to @replete the setting.
4) InstallationadjustmentsA. Trsn~ unh d~ t M dtsr speed Sdjustrnem (
@ Ck the transport*on.@ Use the keys and keyp@ on the operationpanel and enter the
fdtiing key aeque~.c + P 40 + P +@+@4 Psw.% dooumentfeed rollerwill turn for approximately1-2 sm.,@ the @U-t feed irrdimtoron the panel will blinktwo orthree times. This oompletesrollerspeed adjustment.
Se sure to adlust the transportunit duument feed roller speedbeforeadjustingthe dmrnerrt f~ sensorsensitivity.
6.Trsn~un~d~~ rn~~r~~ju~
~ Close the transport-n...4
@ Set a white sheet of ~ paper in the SADF tray.@ Now use the keys and keypadon the.operafionpanel and enter
the folfowingkey,%
ueme.c + P 40 + P 44 -g+ Psw.~Thesheet of p-r willbfsd and immadiate&diwharged. Thedmment feed indtitor on the rightside of the panel will blinktwo or three times. ~ oornpletesthe adjusfmsnt.
NOTE: If the paper is ~t fed, or if the originalreminderindictorlights due to a pro~em in tran~rtati~n, repeat tieprtiure fromstep @-@.
C. O~instl S* dst-or adlu-t (onSF-~W only). 6Adlustthe ortginalsize det~or on the apy machineas follows.@ Close the franspons~on.@ Use the keys and keypadon theoperationPaneland enter the
fottoting key stierr~.c + p -0 ~ .P 4@-~+ Psw.
@ Press the printbutton(PS~ onm more.@ Open the trq ~iorr.@ Set an 1l”xIT ,(M) White Page m the frOnt edge of the
dtiment glass so that it wpfetdy ~vers the originalsizedetmors.
@ Close the transport~.@ Pm the pdrtfbuttononoa me.
( Y .[i / .
This ~plet~ adlusfm~t of the originalsize det~tor
*’---”-2. Sofler (SF-413)1) UnpackingOpen the package in the followingorder.
2) (Installation)●. Psrts list
. ‘uxllla~ Paperguide
SF-7700SF–775O
●%rfer attachme~ brackets,F ~ R
●Screws for atfachirrg&rter brackas M4x8(WISPringwasher and,w~er) .................................................... 6
●Screw for surirrg (F) M4x8 (wlspringwasher) ....................... 1●Wrew for securing(R) mx8 (b-) ....................................:... 1●Screwfor attachingauxilia~ paper guideM3x6 (wjspringwasher
and washer) ........................................................ .........................Installation man”a[ 2
b. Inataltation@ Attachthe auxilia~ paper gude ~ sorterattachmentbrackets
to me Sorter.
A’
@ Open me tit panel of me ~ machine. w Ifi the u~rhati rwsse *W and ~~ open the upper hatf of the ~machine.
3 -e
,,
-“““ ‘“ “’‘SF-77OOSF–77a0
@ Remove the noisefiltercover on the lowerrear side of the &py ●Cautionson inmllatjonmachine.
/ Fusingunit
0.
\
Break~i~ to makeharnessopening /
wasfinercover
@ Cut the fibs to make an openingfor ,~e harness.@ Attach the sofler to the copy machine, and ~ure it in place
fromthe insidewithM4x8 (w/springwasher)for the frontframe,M4x8 (brass) for the rear frame, ~d ~~t the ~~ermnrrector11 pinwiththesorterconnectororrthecopymachine.
(
‘ Wer
●-nectirtg the @fier connector
Sorterconnector
\Sorter ~
*Y ma&ine(ontb copym~ine) , *er
If the mounting=rew bles do not match me screw holes inthe copy machine, liftslightlyat the arrow (to tilt~heSOfierasshowninthe figure)and thenbwar the Wrter again. The screwholes shouldnow be aligned.
@ Installthe noise fihercover.
3) Lwa[ mde progmmingMake settingsafter ins~lation on the copy ‘machineis complete.NOTE: The system will not fu- pro- if the correctsetting
are not made.
.OP~ON SELE~ON AND COUNTER MOOE S~NG.Make the folbwing adjustmentswhen a semi-automaticdocumentfeeder (SF*) or sorter (SF413) is insfdlad or when changingeither the total counter or maintenancecounter mode from single icountto double countor from doubleto single.
@ Turn the copy machine oower ON,@ Push the fo~owingto ex~e test command78. C +,P + 0-.
P +~+@4 PswWhen the ready lamp lights the current stored parameter isdisplayed.
@ Enter the code for the options and desired counter modesaccordingto the table bebw.00+ Psw(00 = 2 digitdata number)me ready indicatorwillgo out and the new data settingwill be ~~n in the copy quantifydispby.
!~
.~~~~ IT*
I ~ -’1
0001 ~~:1 VW w
Im , -ti
Vn I!
I
I
10~ ~-
11 YaM :
12 w- :
I,.
1!~
\I
I
-[_;; ii
I
* 4-. * m 11-~lr(wmla 4 * MM a h - @~-w,
mm:m *Ml m ~ ~ ,fm - ~ Memm.
@ Push the clear key to mmplete the setting. ●
Grrrrect the sorterconnectorwiththe sorterconnectoron thecopy machine and make sure the harness ia positionedasshownin the figure.
3-7
.——-. - ~~•..—.—........—---. --——- .-
SF-7700sF-m60
e
[4] COPY QUALITY ADJUSTMENTSCOpyqualitymust be adjustedfor any of the fotbting:.At the time of maintenance.●Afterthe drumcurrentadjustments,afterthe coronasare repfacad,
after the mrona wires are rePlacad,or after a highvottageunit isreplaced.
●After replacingthe CLC PWB unit or its mponents..After adjustingthe VR on the CLC PWB.●After replacingthe autOexposuresensor (AE).●After replacing,adjusting,troubles-, or dis~ y of the
opticalsystem (copy lamp reflector,etc.).●After disassembling, troubleshooting,or adjusting the optical
system.● After replacingthe OPC drum.●After rapladng the Main PWB unit.●When the tiOUMestatus “U2” is dispfayad.●After re@acerrtentof the main PWB.●After replacementof an IC (RAM IC3) withinttre main PWB.●Afterwing the exposureContra.plate W.
1. Precautions in copy qualm adjustmentsObserve the follting before performing the copy qualityadjustments.@ Clean componentsinthaopticai system(tiglass, Ierrs,mimr,
copy lamp, and refl.~or).@ Clean the auto exoosuresensorsurfacew& a cfotftdamDarrad
with alcohol. (UK& M0049C~-
NOTE: WiDinoWitmadrvctothwilltiusearf e~ chargeto ~he-sensora~ will attract more dust.
@ Clean the mrona wires (MCU, TCU).@ Clean the developer unit.@ Clean the area near the OPC drum.@ Clean the OPC drum cleaningblade.
2. Copy quality adjustment pro~ureSeethe flowchartfor copy qualityadjustmm ~.
A. Descriptionof the “flowchatifor copy qualmadjustmentprocedure2)Place a test chati on the ~gind table
Placefoursheetsof blankwhitepaper, 120mm x 420mm, (4.75”x 17’? on too of each other and pfa~ ~ test ~afi
TAbut I
:OG+069Cs~ or KODAK gray tie baa or on it, so: the gray -Ie -ion of the test chart can be copied.
1 I I 1~ -
4) Set the &py dens~ correctionlevel to the middleWhen the dwrswitch (DS~ is turned off by openingthe frontPanel,the status“CH” is disp[ay~ in the copynumberindicator
mand fourout of five COpydensity indi~tors come -e withtheremainingone blinking.This”blinkingindicatorindicst~ the copydensitycorr~ion ievel CUrrStiIy emp~y~, and it ISpossibletOselect another level usi~ the CODV densitylevel ~rol kav.. .NOTE: To change the w-py densityCorrti’levet, keepthe COW
densityset.key dapre~ for a periodof morethan 2.5*Ond. OtherwiW, the level may not be changed.
~-. —------------ .-. -- .,- .. ....... .. - .-- —..... ....
- Grayscab
J
.Eacf.bvat of the copydensitym ~ kvd is representedbyL2, Ll, N, Dl, D2. In order to _ another m~ densitycorrectionw, it is ~ to sat the key in the center (N)Ie@ - N btinkirrgand ~ othersare activad.Thisfeaturais i- totfta AE sansorusadintheconvantiortdmodek and is @ to a copy@ity deteriorationMusedby fatigueof the tim @dust in the opw @em by shiftingthe copy lamp added *.
❑.(5)- TL1(4)
mT L.(,,
D1(2)N(3)
w Dark
aD
\ D2
(D*)54321
~-~.
sensorareaat a ~tanr%(AEsensoroutputtavelat ainstant kvaf)
The copy density~ fevetis not m Wmg ss h ~ydensityM (whosetevetaarechanged~ thecopydensitycontrolkey is used,) they have a differentsignificance.●To changethe ~ density~ lev~, ths qy ~si~
Ievd (copy lampaddedvoftaga)is shifted.Fouroutof tie copyd~sity indicatorscofrta- withthe r~nirtg one itibmrMnking and the status“CH” on dispfay(when the doorswfichisoff,)tDbSmSdytOChSngathSCOpy_corractiorr ~vei,
●TO ti~ the q - kvd, thS-y dansty IWd (COW~p addedx) W is changed. It is possibleto changethe Wd whenone offivecopy_ bet indicatorsis activewith the d~ actuated.’
6) Test command47c + ‘P + 0- P + @ * ~ - pswWhen h test command47 is executed, the mirrorbass goasinto actionand the ~ lamp drivingvohagecan be sat withina ra* of ~ (110~ to 60V (160~ in an increment of 5Veach, and, the AE sensoroutputcharacteristi~ ag~rrst the copylampvoltageaddedduringcopyingof a whiteoriginal(copylampint~~) is SW~ in the main PWB RAM. The cow densi~adjustment(tastcommati.46) ismnductadon the basisof thesecharacteristics.
4-1
-------. .- —----.-. .. .. .. ., .,.1-..,:-->. ,. .
..... ..... ......=,., . .... . . .‘ -’- .-=?-+:” :.,.,..,. -,... ,,,,.,-.
SF–7700SF-775O
~ Imp wti a (my tampintq) VS.AEsensoroutputdermeristim (AEeen~ measurementerasiswhite)
TAEw’neoroutputlevel
..’
/
IItII
/’ ~:.I1’!I
,/
[v] ‘: It
Wls a w 70 .75 80
copyImp * - ~(tipy Ierrrpintenesy)
~rrding on an individu~ ~ier, there is a varfationin.its AEsensor oharactensti~. TherefWe, the -y lamp added vokagenaedstobadjustad usingthetestcornmand47.1
Test command 46c + P + o + P + ~ + @ + Psw=acufe the above operationto go intoteat oornmand46 modeto determine the variation range of the copy density and mydensity level, ,prasatingtwo vatuas of CLA @ Cm.CU is tie preset vdua used to determine the standardcopydensity(AE sensoroutputIevd forthe sfandardq lampaddedv*e).The standard copy density is the ISV4 that me strip 0.3 (3) ofgray -Ie is distitiy @ M the gray @e atrip 0.2 (2)stightiycopiedin copyingthe AE operatingwhite area underthecopy densityIevd “5”. me CLA vatue mustbe set,to obtainmeabove rasuk. figure within parentheses representsthe gradeof the KwAK gray -e.The AE sensoroutputlevel iscomputedby the CPU in referenceto the copylamp added voffagWAEsert~oufput characteristicsin me memory and stored in the main PWB R~ for the -vlamp added vtiaga (standardcopy lamp added vottage).~ydensity, therefore, is HM in reference to the AE ~nsoroutput Iavd.CLB is the presetvalue whichis used to determinea singlestepvariationfor COOVlamp v-e steps.It has to be so set tith the Cm to obtain a~py wh~ thegray de stripO(A)is distinctlympied at copy densi~ level “i”and the strip0.1 (A)#ight~ copied.Since the CLA pre*t value corres~nds to me standard~lamp added vo~e, a figure beWaen 55 to 60 is vsfid.Rgure within parentheses represents the grad of the KODAKgray scale.
(Ex)B- mpy *P addedv~ege (V) 70V (1OOVseries) l~V (200Vseries)Cti presetvabe ?0The CLA value for the 200V series doublesthat of 100V seriesand correspondsto the standard~y *P added vonage.Forthe CLA, hispossibtatopresetfromOto99. It isprogrammedto hoti to the standard copy lamp added ~ga befow 55V(1IO~and above80V(160~, even ifitisaat atO-Warrd81-gg,
6asti copylampaddedvo~e [~ 55V 55-80V 80V (lCOVseries)
11OV 110-160V 160V (200V@es)CLApresetvalue , 0-54 , 55-80 , 81-99,
Invalid Vw .Invalti
A single step of CLB correspondsto a copylamp added voltagedifferenceof O.lV (0.2~ whichis a singlestep variationof copy.dansi~ level. It ispoasible for CLB to preset a numkr ~twaarrOand 99, enablingan adiustrnentvoltage differencebetweenOand 9.9V (Oto 19.6~. Figure withinparenthesisrepresentsmevalue for me 200V series.
9) Sat the ~ density*el to ‘5”.Mve the copy density indicati ‘Sm~ using me oopy~ty = key.
Light O*
4-2
SF-77OOSF-7750
12)Set the -y density level to “l”. 29) Presetthe Cm* whti is l~ti the * read in stepHave the WY density indi~tor “1” ~vatad uSng the -ydensitymtrd key.
2~.
❑ + n. Psw
* densiry
‘~w,T”m”
Imng ti ~ Vdti by 1 ~ the ~ lampaddedVom w~ by O.lV (Ore. ~ ~ the preset value,the tier the ~ is _ at ~ - &ei “l”.
16), 19) Read teat amend 46 CLA preset @ue.Push c + P + o + P + ❑ + @ + Psw to go into test~“and 46 “ode. ~ CLA _ VdUS *II be d-ad inthe -y numberdi~y .Window.(m pause -tor mustbeM in this i~ .)
18) PraaetaCMvduetiti klargarthanthavdue raadinstep16)...-
❑ ☞❑ ☞Psw—~~w the preset, the @hter the *ard oopy -
l~aaing the preset value by “1” imqaaaa the ~ lampadded -e by IV (2~. However, it till stay at 60V (160~even Wa value above 60 is attempted.Fgura win par~representsthe v~ue W the 200V aariaa.
21) Preset the CLAvdue smd~ than the tiue read’in step 19).@ the bl~ng key opera~n in the teat ~mand 46 mode withthe pause lamp M. ~ s~ler the preset v~e, the darker thestandard~y image ~.❑ + u * Psw ,,
keaaing k preset value by 1 d~eaaaa M ~ lamp addedtitage by IV (2~. However, it will stay at 55V (110~ even it avtiue -55 is attempted.
23), 2~ Read the Cm preset value by t= oommand46.PushC + P + O + P + ❑+ ❑+ PSW+ P *SS indbtoron) to bringthe CL B preset v~ue on the disptay.
25) Preset the CLS vatua w~ is tih than the vahe reed inst~ 23).
.
-. -----...4-:
---—..
-,...:,.,.:.:.”,,.~, ., ,;, .,.<, , . . . . . . . ..,.. ,. ..... .,..,%.,,,,,,:,... ,, .,, ~+,. ,. .. . .. :;
. . . .... .
“a,-. -.i LuAoub-u. .2.UWU...A..--..... ..:... . . . . . . . . ...,. ..
... ..= ... ~~~~•
[5] SUPPLIES
SF–77D0SF–77m
1. DRUM,DEVELOpER,TONERrf Item ● *timate life . -m S-antimnmant
1
Drum I40,000qiaa24-
, (Fmmpmddrm 1.%RH
I m)“ w
Bhti 40,000@aaRed I0,000Wi*
I DwelWr Blue I0,000mpiaa 24-sBrown 1o,ooo-<
I Green lo,ooo~ 20
-r.-.
Narna
Drumunif
(BUC~(RED)(BLUE)(BROWN)(GREEN)
(RED)(BLUE)(BROWN)(GREEN)
(RED)
(BLUE)(BROWN)(GREEN)
Heat~brtit
Clearringmlbr
OKdmm x 1Badex 1 I (SF-~DR)
~xl(0.6@) (SF-770DV1)
(SF-~DV2)(SF-~ODV3)(sF-mDv4)(sF-mv5)
T- X 1 (I*)
t ~~~ .
(SE--1)W@eti~m~ x 1 ,..,, , ... “
l-X 1(140g) (sF-mT2)WaetetiardM~ x 1 (SF-~OT3) .
(SF.~T4)(sF-mT5)
~(0.8@) X 1T-X 1(24g)~unki 1 (SF-~)-x 1 (sF-noK3)Waatatmdww x 1 . ... (sF-noK4)
(SF-*5)
Ttimlar X 4
~tin~ler x 1 (SF-~OHR)saparatwpa~(uti) x 4separatmpawl(l~) x 3
~limpqnati ~~t~larti~mller x 1Oilimpragnated~&aningdler x 1 (SF.~RL)
w
40K
.——.~10K10K10K10K
3.OK
2.5KZ5KZ5K2.5K
BOK
40K
c
5-1
,I
[6] EXTERNAL AND
1. Exerna/ patism
.. . ........ ~-..,, ,- ,
INTERNAL STRUCTURE
~ .-~. .- .:. : .“.,..’”;;
w
I ?
5
.
,,!
-_.—..”... ~- .. . .. . . ... .-- ..~.- .,,...
P,’
@
SF–77mSF–77m
2. Internal Parts
6-2- -..
—------- . ..,.
f
9“ ‘SF-77OOSF–775O
. ..4..4-
3. Operation panel
(SF-~W)
@( @ ‘ @ @T I@
c
r-1--, r---~---: I 1’ I I I1I WRTERI ● WSom1“I QsORT11 ● GWUPL ------
I ‘.
I I@@-
IQ
I@I I [! \l
@ @ @@ @@
(sFmoo)
‘ T1i(r - --1 L L,,P - -- - -- ---- --7 I II I I
@ ,@
‘1 Wmodeindiqtor 2 Atiomatice~re~_ tititir
3 R-kay(fixsdm~nifi~ti~ ram) 4 N-key
-.5 Mqrrtitiratfo ind~t~r
6!Enla~key(fixad-ti~ -)
7 ~inalsizeindicator 8 PWSzeti&tor
k9 ~numbrindiator 10 paus~d~laykey \/ !
11 Clewk~ 12 Raadyindi@tor I!
f13 Misfaadl~tioni~iMt~ 14 Tonarr@eni~ind@tor
I
15‘ Mtinte_ indi~tor 16 Welo~re@~indi@ori,;
17 Misfeadindi~tor 18 Printswtih
I19 ZeWesdkey 20 Tankey(my numbr satkaya)
.1
j “
21 Csssattesel@key 22 P~r/m~nifitrnn ra~satikey
I
I/ ‘
23L
Zoomkey 24 Zure_lkay j:,.
3 #
25 %Rermodese[mkay ‘c’4
#6–3
~.. -....,, .. ...
.. .. .. .,- ..... ,. . , .:.. ,,., : .. I-., .. ..
&...
~.,.....-
.
4. Switches and sensors(1) Smma
‘- “SF-77DDSF-77W
1,11“x IT) 1- 1 - “1 n I
, I —., --. .--- _-:ti. - I u I 0
rI
o.,-:------i.,A.i e . ,- . . .. u II
1. 0 0*
0 00 0 0 0
ttmtie~ 0 0 0 0-_ -:-.
I I I “------ I1 I “.mluam Sem I u.
o 0. 0,,A--- __—-.– 0 ~
Uml-sI ‘
\ a(m)(m)
Note: with sn asterisk(M is for the SF-77= only.
.6-4
,-
SF-770DSF-775O
.. ..
. .. .. .- ,. .. . . -.
(2) SF-
Partgwe T* FutiionA= ~tosengor OrigindenWaensorAS3 PhOtoaenaor Ongindpssesansor(ongindlmdet~tion)As Pbtosenaor *inalex~aeneorA% Pbtoaenaor %ndf*mll~mtation oulaasensorAS6 Rasdwti Ori~ind@~lAS7 Mim~itti sDr morpowAS9 RaadsWtch *n
(3) SF+13
mw
\
6-6
(
——— .... .... ..
.::?.T:~:~$;9:,:.. .-:,.,,,:; .....:.... .- ,, ,,, ,..... --. ..,.--A,.,. ... . .
,. ;...,.. “.. . ; ..., .: .... .
‘* -:’
5. Motors and SOlenoids(1) sF-nmw
@
Note: wtih an asteri~ ~ is for the SF-TTX on~.
I
..‘> ‘“mSF-77WSF-77~
.. . ,: . . .
(3) SF413
I
Blankimp PWBI
CiCPWB
Note: wtih m asterisk w is for the SF-~W Mly.
,,.
———. ——,:-
OriginalQze~mr PWB(AS1l-14)
SADF~in MB
. -,-.-—.-. .—..—
. ..... ,,-,\. ‘
Se- PWB(A=, ~, ASB)”- “““
‘ -<’ -
-- (3)SF413 .
.
Driverwmr PWB
\
. .-.
.i
y. . . . . -- .. . .... .. - 6-8
.: ”- ‘“’ :.--- --..:-.:.........:a-SF–7700SF–7750
~ COPY PROCESS●ne SF-~~m u- a O@err~ Pho~ timudor (OPC) tir
& drum.
OPClayer\ )— ~ (ChargeTr- Lsyar)of21P
=L (ChargeGerramti Layer)of0.2-o.3~
NuminiumlaW~
1. Functional diagram
[a-}~inal1
*,+,
I Mdn wona unfi
[
2. Internal
, I
structure
No.2mirror(
No.3mirror —..\Ma A mi- . . _ 1
~> \ /NO.6 mirror. ,F.”.- ....... . No.5mirror
/ 1/
‘~. /’Di@arge kmp
--Hea;roller Haaterlamp /
S~;ation ~ati~ \tape dk ‘Psro”er ~Transfermronaunit T*aup rolbs
7-1 ;,.
--.---—...——- -.—,-
. .- ..-4—LG.. -.:-- —A-A*”i...A ... .._.:&:,..;..... ... . ...:------------- .,..~.:::.:.‘“, .... :...-.,:-:’,.. .’ ‘= .
3. The basic copy processOperationalthao~Charge exposureand devel~ment “A charge is aPPli~ over the OPC drum surface from the mainarena unit.ne ima9e exposedby the COPYlamp is projeded overthe drum.ne charge on the drum sutiaca is dissipatedin all areaexcept,for the characterareas of the original,to forma latentimageon the dmm surface. Toner is attractedto the charge on the drumsuflacs and a visible image is now formedon the dwm.Step 1. Charge Transfer sorona unit)
A uniformnegativecharge is appliedoverthe OPC dmm sudacaby transfercorona unit.
Step 2, ~eaningThe residual toner left on the drum surface after transfer isremovad by the cleaner unit.
Step 3. Optical dischargeResidualchargeonthe drumsurfaceisremovedbythedischargelamp.
SF-77OOSF-7750
After STep 1 (charge), Step 2 (cleaning)and Step 3 (discharge),thed~m tirfaoepotentidm~~a~e andiareadyforoperation.Step 4. Charge (Main coronaunit)
A uniformn-e ~rge is applied over the drum sutiace bythe main -a unti
step5.-reAnelectrostaticlatent image is formedover the drum surface.
Step 6. Mve@ingThe eladrostaklatent image is oonvefledinto a visible imageby the toner..
Step 7. Transfer~rensfer coronaunit)”The visible image.on the drum sutia~ is transferredonto thempy paper.
Step 6. CleaningTonerremainingonthedmm,iamll~sd bytie~eaner blade.
Step 9. Optti dischargeReeidud charge on the dwm surface is removed.
4. Copy stepsStep 1: Charge~ransfer coronaunit) .Ptior to going into the COPYcyc~, a uniform charge is aPPli@overthe drumsurfacebythe negativetransfercoronaunit.A positivecharge appears in the aluminiumlayer.
“1
Aluminium-i ‘layer
CCL — :‘.:..’:.:.’,’.‘.’::.’,’.”.”:
cm -
, -?-- ?...
,’.,~-Q---”?.,‘“,e/,,<
-?..., ., ,1
: :$.’! ‘
!
r I
OPCdmm
\ >Transfermronaunk
Step 2: CleaningThe toner remainingon the dmm sudace ‘iszamovad by means ofthe cleaningblade. The w~te toner is then deposit@ in the wastetoner containerusingthe waste toner ~rrying shaft.
Blade Cm WL Aluminiumlayer
.-.
7-2
F- --’-- ------—-— ~~-
- ‘ . . ..- -.:,..’.-.4’L—.=..4:. .: .:.-.-
SF–7700SF-77W
Step 3: Di~hargeUght from the diwharge lamp is proj~ed onto the drum Wtiaw.P@itive and negativecharges appear in the CGL of the drum.menegative charge in the CGL moves tiard the positivecharge inthe aluminiumlayer. Meantiiie, the positivetitige movestmardthe negative charge on the drum sudam created at Step 1. medrums”sutia~ charge is ~u@,to a very IW potential(almostOvolts) -use of the neutr~izationeff~, that ~ra ktieen thepositive and negatie charges on hth the dmms surfa- andaluminummre.
m
Di*a~e iamp
Atier St~ 1 (time), ~p 2 (-ani~) @ Step 3 (discha~e), thedrum surfam petenti~ -roes stile end is ready for operation.
Step 4: Charge(Main coronaunit)A negative - is applied over the drum surface ~ the maincorona unit. A posfive charge devebps in the duminium layer.
I
. ---- /
7-3
1,
&&: -.: . . : . .
.
- “-’ ‘SF-77WSF-77S0
step5: ExposureLightfrOrnthe ~PY lamPispropaed over the originaland reflectedonto the dmm sudac,eth~ugh the mirrorsand lens. Since moreIlghtis reflected~OmIlghtImageareas of the-original,the respectivedrumarea is exwsw to Mre intenselight.On the otherhand, lesslight is reflectedfrOmda Image areas of the originalso that therespectivedrum area is eXPOSSdto leas intense light.NegatlVeand ~Slbve MaWeS appear in the CGL. The negativecharge caused In the CGL advances to the positivecharge in thea!uminium layer pr~uc~ at SteP !, ~ Me Wsitie ch~9eadvancesto the nS9ative charge on the drum surface. Therefore,lhe positive and negative charge in the aluminiumlayer and thedrumsuflace where exm to lightneu~~ize each Ornerad medrum sudaCe wtential drops. since the charge in the CGL is
proportionateto the densityof the mind, mora charge is createdin the CGL areas exposedto more in~se rght. h decrease inthe dmm surfacepotentialis greater as more of the drum surfacenegative charge is dissipated.On the other hand, the dark imageportion(leas intensivefightpro~ed area on me drumsurface)hasleaaCGLchargecreatiOn,sothatnotaomuch dmmsuti- potentialdecreaseoccurs.Inthisway, the el~tic latentimageis formedon the drum surface.The dark image portionof the origirrdreflectsa less intense light&ck to the dmm. This causes a lowercharge in the com@iWareas of the CGL, whichin turn causes Itie or no dissipationofdwm SUtiaCS@tential.
Proj~on of
Proj@ti ofa dafi a halftoneimagearea imagearea(W I@htintensW) (mediuml@ht
Pro@on of a l@timagearea(hQhtightint~~)
.-
Atummlum
AluminlumI
7-4 j
.... .~. d
‘“- ‘“’ ‘:’. . . . . .
,.,
SF-7700SF–775O
Step 6: DevelopingToner is attr~ad over the latent image area on the drum Surfa@to form a visible image. Toner is positively-~ ~ ti~n witithe ~er. The SF-7700~W em~oys two ampownt magnaticbrush deve~ing system and toner is attrmad by the negativetiarge on the drum surfaoe.Sin- the drum surfam potentialis higher in the dti image area(exposedto lass intenselight),moret~er isthereforeattradad mdvi= versa.
0; tier (magneticpatiicle)●: Toner (charged positiveby tidion)
Step 7: Transfer~ransfer coronaunit) ‘-AS the ~py paper is charged to a higherpotentialthan the drumsurfam potential by means of a negative transfer mrona unk, astr~er bondingfom appears between the -y paper and thetoner than between the drum and the toner. This attra~ the tonerto the panel from the drum.Toner transferefficie~ is between 70 to SOVO,20 to WYOremainson the drum.
‘/
Iv
_— -
——.
7–6
. ..... .. . ,.,.... ,~ ....i:k*-..”.SF–77OOSF–7750
Step 8: CleaningThe tone( remainin9on the dmm surface is removed by means ofthe cleanln9 blade,. me waste toner is then depositedin the wastetonercontainerusingthe waste toner carryingshaft.
Blade Cm CCL NuminiumlaYer
.j ;~,
‘ :i//k,v/
+If ‘ ,/
...“ , !
!1/
7
i
\l/i : ,:,.
“.: ~,’/ ,‘esidua’‘oner~
OPCdrum
Ste~9: Discharqe L●
BVe;posingthe drum-surfacewiththe @schargelamp, positiveand towam the residual negative ti~ on the drum su~aca. In thisnqative chargesappear inthe CGL. The n~ative chargeprod~
way, the positivecharge and the negativecharge neutralizeeach,n the CGL advances toward the residual positive charge in theother on the drum surfaceand in the aluminiumlayer.aluminiumlayer,whilethe positivechargeadvancesinthe aluminum
m Di~arge lamp
Uumimumlayer
*
3. Transition of drum sutiace POtential
I [
III
$,Ughtarea I ,
–~v i ‘,
v“,‘;+i - .- .—\ ‘1
\ Ik-r Naa@tarrtial \ I I
\ I !
~.’ .- ------Restiualpotential(–SOto 100V)
ISteP1.2(charge),
—dStep4 (charge) Step5 (exposure)Step6 (&~pirrg) step7 (transfer) step8K-–-— Damarea
Step31 radudion + A *(dixharge) ‘(cleaning)
*!
I
SF–77OOSF–77%
[8] PAPER FEED UNIT
l.: General description. It has a manual feed tray in additionto two cassettes.
@ Manual feed trayMay be used to make a single mpy only.
. Type of pa~r applicablefor manual feeding: 13.8 Ibs.(52@d)to 27.6 tbs. (lO~m~ for paper 8-1/2 x 11” to 11” xIT (A6 to A3).
.. ....
@ Cassette feeding2~shmt cassette (uppercassette) (.250-shaat cassette (lowercassette)
● TYm of PaPer~li- for cassettefeeding:14.9 Ibs (5~m2)to 21..3 tbs. (~m~
27.6.lbs. (l@mz to 34.1 Ibs. (128 @m~ for paper8-1/Y x 11“(A4 to A6).
NOTE: Special A4 paper must be f~ longitudinally.
@ Paper feed unit structure
2. Cassette feed o~rationA. Uppercaaaetief- opermion (@ The figure below showsthe relationbetween the takeup roller,
takeup rollerclutchsleeve, and the paper feed latch, when theready lamp is on.
UPWrcassettetakeuproller
Paperfeedclutti sleevepro
:a..~-~.- r
(V;ewfrom reartie s~e)
Upper
Pspar’faadgear
M
/ Cltih SpflWPaperfeedclutd sleevepromson,,
takeuprollershafr
8-1
- —I
,,..s2+..,.,,.<..:, .,,;., .,,:’- .-=..-, ,
I @ In a fractionof a secondafter the depressionof thepnnt switch,the main motor starts to run and the gear train starts to drive.The paper feed gear also starts to run, but the takeup rollerSnot driven beoause the rotationof the gear is not mnveyed tolhe takeup rollershaft as the protrusionon the clutchsleeve is
~ In 1.1 seands after the startof the man motor,the upperpaperfeed solenoid(UPFS) is energizedfor a moment.With this, thelatchdisengagesfrom the protrusionso that the gear rotationisconveyd to the takeup roller shaft to start feeding paper.
Paperfeedclutti springpro-tin
-- tes:---
- “’SF-7700SF-77=
U* -tte tskeuproller
/ \PS roller Paperentry-r (MS1)
,
The PS mler begins to rotate when the PS sotenoid(PSS)energizes,the mpy paper is ~ ontothe transterunit,me PS rollerativation timingMn be presetusingtestmmmandw. (See my lead edge adjustment,Op~ system.)
Ptintswfiqh‘(PSW) +
Readylamp !
(RPL)11
Mdn motor(MM)
PSsolenoid(Pss)
Paperfeedsolemti( UPFS j
*o.lsec1I1 I I 0.3 Sast11 I
11.1sec1I
~ 0.2sec I
: II I
B. Lowercassetief- o~ration
2, Atier the takeuo roller makes a full turn, the protrusionis heldby the latch again and the takeup rollerrotatloflStOpS.
‘~ Meanwh;le,the paper is cardedintothe @pier by the paperfeSdrOllersandstops at the Ps rollers ~a~se the paperentrysensor(MS1) is hitby the leading age of we passingpaper.ne paper.ISheld there tem~rarily in Ordertomake synchronizationwith:he Image lead edga area of the drum. While the paper iS heldbv :he PS ‘roller,buckle is farmed in the copy paper at the Ps
B
‘Oilersas the paper feed rollersContinUeto rotate.
@ The figurebehw showsthe relationbetween the takeup roller,takeup rollerclutchsleeve, and the paper feed Iatti, when theready lamp is on
Lower-~
Lower~fte paperfeedsol-’ (LpFS)
(Viw fromreartramsWe)
@ In a fration of a secondafter the depressionof the printswitch,the main motorstarts to run and the gear train startsto onve.The paper feed gear also statis to fun, but the takeup roller iSnot driven-use tie rotation’of the gear is not @nveyed tothe takeup rollershaft as the protrusionon the clutchSl~Ve isheld by the latch.
8-2
.. ..k.-..M....?..#.-,. ,..,.. ....:----....- ..; .. ,. . .. ,.. . ..:&.L.22i~~&&.. .-,-----,. ~,..--!:*f .>-+’ ;>.:.,~, ‘. -,: ”.’=:”,... ..
SF–7700SF–77S0
@ In 1.9 secondsafter the stad of the main motor,the lowerpaperfeed solenoid(LPFS) is energizedfor a moment.With this, thelatch disengagesfrom the protrusionso that the gear rotationisconveyed to the takeup rollershaft’to start feeding paper.Action after this is similar as the up~r _ffe fed. (SeeA~-@.,
Ptintswfich
,Paperfeed 1
I 1.9 Sac 1solenoid I
1, 0.2sec( LPFS) (; I
1I ITakeuproller
t)
i1
!
Paw entry Isensor(MS1)
C. Manualpaperf- operation@ When a copy paper is insened in the manual feed tray, the
.manuatpaper entry sensorswitch(M*) is actuatedby the leadedge of the copy paper. At the same time, the main motorandthe gear train startsto mn. The copy paper is fad by the papertransportrollersand stops at the PS rollersby the actuatin ofMSI. In 0.3 s~nds after the actuationof MSI, the main motorstops and the copier goes into the ready state.
@ When the print switch is depressed, the main motor starts torotate again in 0.1 secondslater and the PS solenoidatiateswhen the lead edge of the image on the drum is synchron~adwiththe copy lead edge. The copypaper is then fed tirther intothe copier by the PS roller.
3. AdjustmentsA.Takeuprollerlocationadjustments
(bth assettes)(ChW procedure)Rotate the connectinggear in the arrowdirectionand make sure ~while the clutch sleeve is held by the latch of the upper cassette(or lowermssefte) paper’fe~ solenoidthatthe flat sideof the rolleris paralel with the cassette guide.Toleranceis t5”.
x cluttisieeve
I m
Lowercassettepaperfeedsolenoidlatch
upperCaaaatre
Manualfeedentrysensor(M=)
\ Manualpaperf~ tray
?S rolle; \ paperentwsensor(Msl)
Manualfeederrtry
paperfeed~ latch (V* fromrearframeside)
UppercaaaatfeMeup roller
\ I
LowerCassettetWaup~@r
\;
t----------- --
, ------Must& pdld ~
\ ..-------- $
------ ..——‘L- -------------~- ---------- - --- --
j Muarbe pardld-----------1
i ------------------- -- ---
Cassetteguides (Frontframeview) (
The posittincanbead~stedbythespring insetiadinffreclutchboss.,~th the cfutchboss and the steeve were engaged to the hole inthe center.
MrrnaflyangsgadinthSIholeinthe
clutchbossClutchsleeve ‘:
8–3
,.,X=: —.—...—
-:~:::,~::.,::,,:{.. ., :’,,-W”...-..,*,-! . .
@
(0
~Adlustmentprwedure)@ Check angular d8Viationin bothtakeup rollers.@ Adjust the POSltlOnof the Spflng according to the angular
deviation.
Viewfromthefrontframewe Vwwfmmthefrontf- side
@ @
.1{ the takeup rolleris like A in the figure,change the clutchspringto the boss hole D.
● If the takeuprolleris like B in the figure,change the clutchspring10the boss holeC.
. II the adjustmentisnotpossible,tiange the springhmked positionto re-adjustit.
4. Major patis replacementA. Removingthe uppercassettetakeuprollerT Open the frontpanel.~ Removethe rear panel upper U aver mew and removethe U
rover.
RearPmd u wver Oprimlunit\ Prtiss unit I
Unfastenconneator Opticalunitsuppofler
> unfasten two conne~ors between the opti~l unit and tiem~ess unit and unlock the optical unit Id lever (move tk‘wer in the arrowdirectionA).
‘. ~n UPthe opticalunit and ‘supporfit with the SuppOrter.
_ .-.i-’
SF–77WSF–77%
@ Removethe=- that’hoti the rear panel and rightside panelR and remove the -s.
\h
panel
@ Removethefrontframestie~verof~e Wpowersupply PWB.@ Removethe developerunti,Loosenthe frontmverfroidinghinge
(paper entry side) and tie the frontcover.@ Remove three screws that hoti the DC power supply PWB
baseplate and remove me mnntiors from the PWB. ~en,removethe PWB bas~late.
\ ,./
/\ Frontaver
@ Remove the optiml unti supporterand close the optial unit.@ Push up the clam shell open lever and open the frames.~“ Remove the E-ringof the paper feed clutd U and remove the
paper feed clutchu.
‘%‘ape’‘- ‘“”er‘-”wc LOWnosepliers
*@*&
-\
0-4
,.,
It ...
SF-77OOSF-77W
Remove the E-ringsand the bushingsfrom bath frame sidesofthe upper cassette takeup rollershaft.Move the shaft towardsthe frontframe side (arrowheadA) andmove it throughthe sliton the rear frame side. Then, take if out
‘of the paper entry side (arrowheadB to C).
‘“hi:ti-=’~:u;a”rL’c’”tch(Frontframeside)
(Rearframeside)
B. Removingthe lowercassettetakeuproller@ Remove the rear panel, rightside panel R, and the DC power
supplyPWB, in referenm to A-.@ Push up the clam shell open lever and open the frames.@ Remove the E-ring of the paper feed clutch L and remove the
paper feed clutchL.@ Remove the E-ringsand the bushingsfrom bath frame sides of
tne lowercassette takeup rollershaft.@ Move the shaft towardsthe frontframe side (arrowheadA) ana
move it throughthe sliton the rear frame side. Then, take it outOfthe,p~r en@ side.Sea figuresfor the paper takeup rollerU af A.
C. Removingthe paparfti rollerU~ Remove the rear panel and the tightside panel R, in reference
to A~-L~.@ Rem&e tie opticalunit suppanerand close the opticalunit.@ Push up the darn shell open lever and open the frames.@ Remove the paper feed guide U screw on the rear frame side
and removethe paper feed guide;
\
er feed
guide.U
( ,f —/
.’dRemovescrew
6–6
., : , .. .
@ -n the snap band on the pa~r feed drive reinforcingplateand remove the leads. Remove the two paper fe@ drivereinforcingplatescraws.Re~ve the pa~rfsed drivereinforcingmate.
@ Remove the paper feed tensionpulley.0 Remove me mnecting gear, taner supptygear, pulley 10, and
tie Paper feed bait. f
bnr:l::oNE\”\Paoarfeeddrive
“-\ \Paperfeedtensbnpulley
side)
(
NOTE: Do notforgetto insertthe pin back in the toner supplygearand pulley 10 after mountingthem on the paper feed rollerU shafl.
@ Remove the paper feed rollerU to the front frame Sale.
K“\\ (Rearframeside)
‘u
-..-.—.-..,- .---- ~-. ..
! 7+,
~-----–-’’ --— -.-. ->.. . . . ......... ......... ..=..,,. . .. . , . , . :
[
D. Removingthe paperfeed-rollerL~ Remove the rear panel and the rightside panel R, in reference
to A@-@.@ Remove {he opticalunit supporterand close the opticalunit.@ push uP the clam shell o~n lever and open the frme~.
- ~ Remove the paper transpoti guide L screw on the rear frame
4“’
side and remove the paper transportguide.
I ,.
\ (~—Q,”7-..},.
\ “‘\\\ \\
\
\d \ \
\
.’L
@ Remove the paper feed tensionpulley.@ Remove the E-ring on the rear frame side paper feed roller L
shaft and remove pulley 10.NOTE: Do notforgetto insertthe pin back in the tonersupplygear
and pulley 10 after mountingthem on the paperfeed rollerL shaft.
@ Move the paper feed roller L towardsthe front frame side andremove it.
<–—
E-ring
- ..... ....-w-... ... .... .
SF-77OOSF-775O
E. Removingthe manualfeed paperent~ sensorswitch@ Open the optic? unit, in referenceto A@-@.@ ~nd the manualfeed -r entw sensorswitchactuatoron tie
paperfeed upper frame guide (see figure) and remove it fromthe frontframe side.
Unfasten the manua feed entry sensor switch connectorandremove me switchholdingsorw. NOW,replace the switchwiththe new one.
F. Removingswitch
(Frontfram side)
the upper cassette paper emp~
@ Remove the rear panel, rightside panel R, and the DC @wersupplyPWB, in refere~e to A@-@.
@ Push up the clam shellopen bver and open the frames.@ Removethe manualpaperfeed guide’screw(one on bothframe
sides) ano removethe manual paper feed guide.
InserttheSorewdflverthroughtheholeinthe
Upwrframetoremwethescrew (Frontfrarrsestie)
8-6
-—-—... ....—...,-,,->----...
. . . . .SF–77Ort . ..SF–7750
G. Removing theswitch
(—
Pm guti
(Rearfrme side)
@ Close the clam shell.@ Open the opticalunit and sup~ it with the’supporter.@ Inseti the screwdriverthroughthe hole in the paper feed upper
frame guideand removethe krew that holdsthe uppercassettepaper emp~ switch.
Paperfeedupper
MUppera-tte paper
frameguide A emDW*msnr
@ Remove the optical unit supporter,close the optical unit, andopen the clam shell mechanism.
@ Cut the uppercassettepaper emp~ switchlead wiringtie at twolocationsand removethe wiringtie on the paperfeed reinforcingplate. Unfasten the lead wire connectorand remove the paperemp~ switch.
/L...- Cutwin~ ties /
0 -?
\\ Uppermwtie paperemp~*rrsor
a -..’\ \R\ \ !— ———.
Iower mssette paper emp~
@ Remove the rear panel and right side panel R, in reference toA-.
‘8@@@
Retive the opticalunit supporterand close the opticalunit.Push up the clam shell open lever and open the frames.Remove the paper feed rollerU, in referenceto C@-@. fRemove the lowercassette p-r emp~ switchholdingscrew,Cut the i~er cassettepaper emp~ switchlead wiringtie at twolocationsand removethe wiringtie on the paperfeed reinforcingplate. Unfastenthe lead wire connectorand remove the paperemp~ stich.
paper
hsen snap~ ‘ paper~- rollerU
H. Removingthe uppr ~ssette papersize detectPWB@ Remove the rear panel and rightside panel R, in referenceto
A@-@.@ Remove the opticalunit supporterand close the optid unit.@ Pushup the clam shell open lever and open the frames,@ Remove the pa~r feed rollerU, in referen~ to C@-@.@ Cut the uppercassettepaper emp~ switch’leadwiringtie at two
locationsand remove the wiringtie on the kck of the paper 4feed reinforcingplate. Unfastenthe lead wire connector.
@ Remove the two sensor PWB holding screws from the paperent~ side and remove the PWB as shownin the figure.
%‘:\.A<’\
/ <J“” / /.”
‘\ ,/,; // #,
F/3~:%~.‘v “*1.
9
/~
/
RemovethePWBholdiWWrewsandIifftherearframesidePWBto removek fromtheframe
~R”earframeside)
>Jgmoving the lower cassettepaper size detect
.7 Remove the rear panel and right side panel R, ‘[email protected] the opticalunit supporterand close the opticalunit.Push UDthe clam shell oDen lever and open the frames.Removethe paper feed ;oller L, in referencefo D@[email protected] the lowercassette paper empty switchlead smring wiringtie at two locationsand remove anotherwiringtie on the paperfeed reinforcingplate. Unfasten the lead wire connector.
, Wringtie~nng posti anddirdn/ ..—
SF-nOoSF-n50
~ Move the paper stop roller shaft towardsthe rear frame side(amwhaad A) and move the shaft throughthe holeon the frontframe side. Remove tie shaft fromthe paper exit side.(arrow head B’to C).
PS dufch
K. Removingthe lowerpaperstop roller@Push up the clam shell open lever and open the frames.@ Remove the f~r screws that ~re the paper stopperfront,
her paper guide and remove it.
..
T,? PSfront,tier papergutie
;. /
-— ,. \——
@ Turn aver the paper stop front, lowerpaper guideand removethe two paper stop lower springs.Removethe paper stop rollershaft.
PSfowars~ng
<; Remove the WO sensor PWB holding ~rews from the paperentrysideand removethe pWB inthe me manneras re~Vingthe uppercassefiepaper Size dete~ p~ as showninthefigure.
J. Removing the upperpaperstop roller“.Remove the rear panei and right side panel R, in referenCeto
A.”Q-~RemovEthe optical unit s“up~tier and close the opticalUnit...-,.
~ push up the clam shell own. lever and open the frameS.I Removethe Paner Stw rollerE-rina on the rear frame side and
removethe paper stop clutch. -‘*OrE: ne paperstopclutchis held by a pin, it hasto be replaced
when re-assembling.“’ aemove two E-rings on the rear frame side of the ps roller,
“~shlng.frontframe side E-ring, and the bushing.
@
NOTE:
Mte thedirtin oftheD%urmen mounting
The D~ut portion of the shaft must face in the directionshown in the figure, when insating the lower paper stoproller.
0-0
—
SF-77WSF-77~
L Removingthe@~rent~sensor switch(MSl)@ wsh UPthe dam *II open %r and -n the frames.@ Remove ,~e -r stopper* and - paper gu~.@ Remove the paper entrysensorm -end @three snap
btis that bti tie * leads. Unfastenthe mm andrepla~ the paper entry sensor -d.
(~- ~~•
‘- — —,.
\, L...A
M. Removingths ww trsnsooti rolkr(Paper transportrolb L)@ Open the @d unk@ Remove the paper &anw d~ mar and remove#e w
_~&ol=W=~r$& ~F upper frame gtide, thenremove
@ In &r G provide a c~. to remove the paper transport . !dler U, remove seven ~riw harness 6m wews andmove ~;b tiring ~ war to@ paper exit side (arro*ead). ~
@ Remove the paper w~n roller.@w fi~ * pF u~rframe @de and retive the paper transportroller U.
i
/
8–9
[9] HIGH VOLTAGE UNITS
1. General descriptionThere are two ooronasused in the oopier;,W main, and transfer,~rona units. me mdrf oorona~lies’ a unif~ negativemeto the drum surf-. The tr~sfer mrona is used to transfer thetoner from the drum onto the ~ paper by ~yi~ a ~ativecharge from the bad of the mpy paper.
2. High voltage units(1)Mainhjgh voltageunit (MHVG)Dcoutput= -6.OWDC, 640@
*1 .O@, differe~ b~~n fr~ @ rea?Z:”::! ‘!>:$,
(DCD current= -14 ~$~0#, differe~ between frontand rear =*, mm:
2yd
3. Discharge lampThedi@arge lamPisusedtoremoveraaMu~~~e ~~dmm.
4. Corona wire replacementRefer to the figure ba~ for replaument of the @rona wire.
(1)Maincoronaunit
ViewfromA View fromB
(2) Transfercoronaunit
I— -
Coron&wire
,.o,&%~ViewfromA Viewftim B
ITransfer coronaremoval)~ Remove three trans~~ guiw ~rews and one transfermrorfa
screw,and remove the trans~rf guide unit from the ~pier.~ Removethe separationtaps from the transfercoronaunit.~ unhookthe transfermrona housingat twomtions and remove
the tran~~ unit by lifii~ the transfer aona houSng in tiearrowdir~tion.
Transtar=a _ ‘
,
5. High voltage unh output adjustments(uCD),
(1)Tools quiti:@ DCD test sheet (UK~-guide OllOFC~
UKffi-OllOFCn
,,9-1
,.. >..,. .. .-=. . . .. .,.*,. ,., ,. ... .. ,,,,,.,,... ......... .. ..... ,. .
““””D”SF–7700SF–77W
.
@ DCD teat sheet harness (DHA1-wFc~.~ m ~D - _ ~’~
-@*
tWLIZOOOSFCZZI(WLIZOOOSFCZZ)(~ LIZOOIOFCZZ)
--- (WLIZWFCZZ)Micmit&(= LIZOO02FCZZ)
~lti XHa; pm AIam ~ — oh
@ Digital mutimeter (or miao ammeter).NO=: -The meter must have a measuring range
with a tofer~ of *1%.
I 1
of o to 100A
(2)fiehighvoltage unitmustbadju@~ forany .one of ‘thefollowing~a~ns:
@ Afierr@~~flt offhahigh vobge unit.@ After repl~~nt of the main or transfermrona units.
(3) Coronaoutput adjustmentpwures:NOTE: If the MHVG is adjustedfirst, the outputof the THVG may
be higherthan its_ v~ue. To avoidth~ afwayasd@the THVG _ ad~stfng the MHVG.
& TM* ~OR
output adju~ernove the devefoperunit, bfank lamp unit,main ~a unit,
and the front frame SW dmm shaft.@ Moutithe DCD teat sheet on the drumand ti
H or tape.it withmbbet
@ wm the DCD teat sheet mountedon the drum, ifl=fi the drumgear side onto the rear frame dmm shaft in s@ a manner asto alfowroutingof the DCD tiring harnessthroughthe dav~unit mountingslot.
@ Install the front frame side drum shaft.
@ 1- the bfmk lamp unit.NO=: Ss aureto itil the Manklampasadifferent -aourran
will be measured if it is not inataffed.@ ~ the frames.Q ~an the transfer~a wire. Do this@ withoutmountingth<
main ~ uniL@ Manudfy Setthe ~ti on.@ Wti the ~D teat feadato the meter and the WD sheet.
I&x.11 I-_ ~. I
IM~RTANT:
@ MeasuretheWrrentatthetit@ r~rfrarnesidea. The~mn’differe~ muatk w~in [email protected]. Turn the main power on and enter test mmrnand 10. The
transferhgh votiage unitwill ativate for 30 ~nds.b. Measurethedwrnw~~tatme~t~ rearframeaidas.
.Whan the teat ‘harnessmicroawi~ is off, the front Wfside wrrent is indtited on the meter.
●When the teat harness miortimh is on, the rear WCstie drum arrant is indi~tad on the meter.
Make-aura that the M= teat lead is mn~ad to,~ chassisground.When the digiw mutimeter is used, wnn~ thetesleads as foffowe:Red clip to the negativej= of the meter.Blue dip to the poa~e j~k of the meter,And set me meter range as fol%:W&l to DCmA range.m&2 to 0.2.When the ammeter is u= mm the t-t lead:as fofhws:Red clip to me negativeja~ of tie ammeter.Mue dip to the poswe j* of me ammeter.
9-2
1SF-77OOSF-?7m
‘+(oF;, -(0” . ~~~~ -x- : J
rh &<’
~h x @ MQ
c. Makesurethatacurrent [email protected] tie current difference is greater than 4.O@, replace the
IQ :
coronaunit.@ Adjustthe THVG outputcurrent.
●Turn the main power on and enter test command 10. The 2-~?v=-:?? -transfer high voltage unit will ativate for 30 seconds.
● Adjust the THVG output adjusting pot located on the high IFvoltage unitso that the THVG outputcurren(shou~ @ at –14*2.o&.
(Rear~ side)
b. Main corona output ad~u~nt:~ Corm@ the DCD test leadsto the meter, in refer- to (3)-a@
@
to @.~ Clean the main corona wire. The transfer corona unit may W
mountedduringthe measurement.~ Manuallyset the doorswitchofi.~ Connectthe DCDtestleadstothe meter,inreferanceto(3)-a@.~ Measurethe currentatthefront and rearframesides.Thecument
difference’must& [email protected]. Turnthe mainpoweron and entartast oommand9. The main
highvoltage unitwill activate for 30 ~nds.b. Measurethedrumcurrentatthefrontsnd rearframesides.
●When the test harness mimswitch is off, the fronttieSidecurrentis indicatedon the ~t~.
●When the test harness mi~~tch is on, the reer frameside drum currantis indicatedon the meter.
*(oFF)*(oN)c Makesurethatacurrentdiffarew isnotgreaterthan2.O@.
If the currentdifferen~ is greater than 2.04, r~hcs tiecoronaunti,
NOTE: A slight flu~ua~n may -r in the current during memeasurement.In Suchan ev~t, read the the value at thecenter.
5 tiIus; tne MHVG outputcument.●Turnthe main poweron and enter test command9. me mSin
h!ghvoltageUnitWll[a~ate for ~ ~~s.. Adjustthe MHVG output adjusting pot located on the high
vOltageunitso that the MHVG ou~t cume~ shouti ~ at 22.5=1.o&.
,’
,
9-3
. . . ,. . ,. : ,,.,.,<:.,,. ,,,$,.= ....?.
......<-*,-DSF–7700SF–77=
[10] OPTICAL SYSTEM
~. General descriptionme opti=l system of this @er mneiste of a fix~ f-l distan~lens and six mirrors.B-use the lens positionis shiftedrelativeto the mirro~, redu~nand enlargementis possiblefrom xO.M to xl.% in 91 imrementsof 0.01.
In the SF-~W, the ~ posm wtive’to the mirrorsis clangedby means of a steppingmotor.me lens is fix@ in the SF-~00 asit dk not feature variable magnitition.~ reasonsix mirrorsare used, is to adjustthe optid path to theintemd *’anb. ~issystem permitsasmdler internalstrudure.Exposureis mntrdled elmrontilly by vawing the intensityof thempy lamp. ~votige applied to the my lamp is stabilizedtoQenh~ uniformexposure.A dit exposureand moving~ghtsoum is used in mmbinationwitha stationaryoriginaltable.
W.2 mirror Mirrorrnotor(SF-~~ on&) Refl@or Tati g~, I / //
II I m. , / I
,---- ---.\..’
i ‘\I MirrorWse C
- I*I
- :—
.- -- --.-~
M.3 mirror Mm - B ~ _d
(sF-n50 Ony)
/B-rge lamp’
10-1
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1“Lendmi~r drivemot~(SF-~W ~ty)
h.5 mirror
.
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@original(tableglass)
ob@
1- (din)
Or!gmal(tableglass)
Objd
Image(d-)
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“y-”d-u”mi”-..-----A--’.4- -“-— A- -:—- — ---- -- .-4
Lensandmirror_
mA .Enlarge
+
mAA+uA@ginal
+
-.
mA
+uA’Red=
10-2 ‘y
-.—— ———.
-... - ... , .- -
SF–7,700SF–775O
2. Major parts identification
(SF-~50)
Mirrorhomepo-sensor(MHPS)
\
MirrorbaseI(M.2 and
M.3 mirra
Mirror base I
drive Wrewllq
-.. :,.*.,.., .. .......,..... ,.. -<--- .. ....-..
and function
\A
I ti.6 mirrorMirror~tor / Lensbaseter~rr ~
L/Mimrbara::+dw/ , -Len@mirror d~ motor
I
// b.1 mirror\ / I I
MirrorbaseCmm
MirrorbaseCW.4 and
10-3.
...- .-.. . .- ,-——
!’I
I
I
SF-77DD cSF–77~
I
16-9
*v. --. ... -T. - .-, ---- .-..7 -,-— ------ . . .. ... . ..
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. .,-*.S*::,., :.,%, .:. ,. .
. . .. . . . . . .- -’...-..-::
(SF-~00)
M{rrorhomeposition=nsor (MHPS)
Minor ~ B -
(NO.2 andNo.3 mimer)
Mirror-fpulley
o
ih
/,
\
F=
SF-77WSF–77W
Mirror~ driwwirs.
Mimr ~se dnw tire tensionspri~/ ‘
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I ,11 II
/
II
1,
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,
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,1 il
IIII1 1,
.
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= “
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— Mim ~ C(W.4,W ti.5 mirror)
/Ivu. r lrltrrur
I CopylampRefl@or
Mi~orbe dfie wireteneionspriq
,,
.
SF–7700SF–77W
(1) fie originaltableThe originaltable is stationawand the originalis alignedat the frontleft mrner of the originalgla&. - -
Refy-e
[
– O@i@
-.
i.Ref~ line
(2) Co9v Iamn~k SF-~-m7& uses a 2WW185V (1OOVversion)or 2WWI170V(200V version)-y lamp.The ~py lamp is wntrolled by the regulatedpowersupp~ fromtheCLC PWB, to prgdu~.a stable illumination.
(3) MirrorsThe SF-7700~50 uses six mirrors;No.1 mirrormountedon themirror base A, No.2 and No.3 mi~re on the mimr base B, -No.4 and No.5 mirroron the mirrorbase C.The mirrorbases A and B move duringwing operationand themirror base C moves to cha~e obi~ to imaoe distarr~ in tieenlargementand redution m~e.
(4) Lenso Struaure: 4 lens, 1 groupo F number:7.o0 FWS distance: 183.5&4rnm
g~ly;ens home position sensor (LHPS)(SF-~50
Uti to sense the lens i~tion. me outputsgnd is usedto _magnificationratio based on the home positionof the lens.Magnificationratio varies dependingon the sensor b~tion.
(6) Lens basa (SF-~50 only)The lens is mount~ on this bees whi~ moves towardsthe paperenty side in the redu~ion mode or towardthe paperexitsideduringthe enlargement.mode usingthe Ien#mirror drive motor.
(7) Lens guide rail (SF-7750only)Used to mntroi the lens axis in the enlargementor redustionmode.Deviationin the ~riz~t~ dir~on (@py d~ia~n t~ard$ tit orrear frame side) mn be adjusted by changingthe lens guide rail~sition.
(11) Minor motor(SF-7750only)A W ~aee bruehless~or is u$5d to drtVethe mirrorba$e Aand B. Mtor rotations m be varied amrding to the givenmagnifimtionratio.
(12) Mirrorhomepositionsensor(MHPS)A light trsnemhtive~ sensor U- to det~ the mirror base Ahome position.
(13) Mirrorbase Boflthis b$ee is mountedthe No.2 md No.3 mirrorswhichis drivenby the mirrormotorvia -s.
(14) Mirrorbase,Atinsists of the No.1 mirror,thermal fuse, AE sensor, mpy lamp,exposuremrrtrolplates, and re~or; whichis ddven by the mirrormotorvia *s.
(15)~ermal fuseCloselymountedon the retiorto preventagairterhgh temperaturein the optioalSystem. POWr to the oopy ~p is dirtiy shut offmen hightemperatureis sensed.100V sefies: 12&C, 10A200V series: l~C, 10A
(16) Refl~orLightfrom the sopy lamp is retied on the original.
(17) ExposurecontrolplatesFwr pktes are installed on mirror base A to adfist e~sure toattainuniformlightexposurebetweertthewtand rearframesides.
(18) Mirrorbase drivewireUsedtosonveymirrormotordrivepowsrtothemirrorbasesA andB.
(19) Len#mirrordrivemotor(SF-7750only)Astep@ng,motoris used to ahiftthe ktion of the kns and mirrorbase c.(20) Exposure,titiion plate (SF-7750only) IMountedon me Ms hotderand is usedto attainuniformillumimtiorfover the dmm in the enlargarnent or redu*n modes. .’
(21)”AEsensor ‘” :$,.../Intensityof an originalimage is sensed by the Ight from the ~:lamp. ~ AE sensorarea is l,lomm wide at the originallead edga ‘A photodiodeis used for the sensorelement. .&~
---- -t
tit llOmm(8) Lens drive wire (SF-7750only)lnter~nn~ed with the IenWmirror.drive motor to move the lens i---- -base.
(9) Mirrorbase CThe No.4 and No.5 mirrors are mounted to mimr b-C. TheIosstionof the mirrorbase C shiftsby means of the len#mirrordtivemotorto match objti to image distanceduringthe enlargementorredudion modes. (SF-~50 only)
(10) Mirrorbase C operatingcam (SF-7750 only)Used to change the ~sition of the mirrorbase C by means of meIen#mirror drive motor,
I +)—...—.—..—.u——,I
.
10–6
3segiw
se
irfw
nirr
atuUt (
iredae
Id@
nirt
lat
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F
,... .,. ,, .,’ ,-—,,:.
SF-7700SF-7750
(22) Blank lamp (BL)Charges on the drum may remain out of the image area in theredutiion mode, in the lead edge void area, the separationvoidarea, and trail edge area in the enlargementor normalmode. meblankIWP isthe~fOre appliedto retnovethetiarge inthe unwantedarea to Preventtoner depositsout of the im~ area.
(Blank lamp exposure)
(AB series)
(Inchseriee)
Vti mea(separsti area)
3. Ad~ustments(1)ExposurebalanceadjustmentMake a half-tonempy on the A3 (11“ x 1~ paper in @e normal(l:1 ) mode, then adjust h exposure bd~ by moving theexmsure ~ntml pktes W, X, Y, ad Z in di~n A or B.Dir~ion A makes me ex~sure da~er and dir~on B makes ~ex~sure lighter.
_ Frontframe Rearframezn–,
I B t /
EIm!,~t~;:;eW&m@x I~rs’-plats Z
_re = ptatsY
MOTE: If the ex~sure ~~1 plate W was moved, oopy density~aeds to be adjusted.Example:If the ~py is like the one shown~bw, move ex-ure;Ontrolplate W in dire~ion B to balan~ the exposure.
(2)Mirrorbase B parallelismadjustmentT-IS adjustmentis rqujr~ to obtain parallelismOffhe mirmr b-8 ~Ith the drum sutiace and the originalSurf-.Tke adjustmentis requir~ for any of the f~lo~~ re~ns:● ~~er replacementof the mirrorbase drive Wlm.9 ~fier replacementof the mirrorbase A or mirrorbase B.
● When the my like the one shownMow is produ~.
@ Loosenme mirrorbase A wire Wing ~rew, one each on thefrontframe and ~ar frame side.
1– IAl
. .———.. . . . ---:rulB,:
-
*
10-6
“’-’””’””-=”’=’’-s”2”3’’”’”’-mF~”-*”’F~-““z”:m%’pT’”’’%’’,,.:.,7.,.,,7 .,~,....*.P-.,-,-. .
@ Man@v rotatethe mirrorbsse drivegear and bringmirrorbeaeB into mnte~ with the mirrorbase B positioningpkte B. If thefrontframe *of mimr base B mmee in mts~ withthe mitibase B positioningdate at ~ same time es the rear frameside,
: - will.~ m need for ed~etment es it h=. been sd~etedm.
II Mma BI II
@ If eitfter end of mirrorbase B is not in ~ntsti wi~ the mirrorbase positioningdate B, the fd~ng a- is r~uiti.
II MirrorbaseB II
@ been em mirrorbase drive pulley se-ewe on both framesides.
1mean -W (frontframe*)
/bsen -W (rear* 40)
@ mut movingthe mirrorbase d~e pulleyon bornframe sides,rotate the mim base shaft ~ degrees. (Manuaf& mtste themirrorbase drfvegear)
‘@ .~ghten the two ~ of the mky whiti the mirrorbase B_ in ~ ~ the mirrorw positioningplate B.
‘@ Manuallyrotatethe other side PUMYand stW.it* the mirrorbase. B -s in m- with the positioning@ate, xthoutmovingthe mirrorbees shaft.
10-?
●
●
m i-kng h front h side mirror base dtie pulley,*fheedge of the- baae drive pulky with the edge ofW miw baas dti *ft.W i-w the - frame aide mirror base drive Wiley, .- a ~ of O.Wm ~ the edge (i*e) “ofti f,rnirrorbase drive pul~ and the E-ring._ (F~ frameside) (Resr_ ~)
1
@ *ti-mthemO.- u
base drivegear to separate~ mirror. . .~ ~ B, thenbringit inmnti again.
Ensurein this.~ that bothframe sidesof the miwr baseB ~ in _ with the mirrorbase ~itiorrim date at the
‘~ ~~e the @ht aide rear panel. ~~• {emove th _yloperation unit.
of mirrorbase A.
.
- .
t ,,.,,., ,..- ,?, -,,. .. ...
1
I
@ Manuallyrotatethe mirrorbase drivegear@ bringmirror-A in antati with the mirrorbase positioningplate B. Ensure inthis inStSn@that the front W re~ time sid~of mi~r b-B ame in mnw with the mirror& positioningplate at thesame time.
@ Push mirror base A in the dirmion of positioningplate A andhave kth frame Sdee of mirrorb=, A mme in ~t~ withthemirrorbase poaitioni~ plate A.
@ Tightenthe mirrorbase wirehotiing bratiet ~ew m M tiesides of the mirrorbase A.
@ Chti your ~ustment.
I I Mim h BI II
-. ... .— ._. _ -
1-
NOTE: The mirror base wire must be routed between the mirrorbase A frame and the mirrorbase wire holdingbra~et.
sF-nmSF-mW
(4) Mirror-e C ~rsllelism MjustmentThisadjustmentis ~uired to tin ~ldti of mim base Cwith the’drum surfaos~ h o~in~ SUrf~.NOTE: This edjument ~ on& be ~ after ~1 mirror
base A parell~ism adjustment.The adjustmentis Wuired for any of the f~wng reaaone:● After removalof mim base C.. After r@a~ment of rnim ~ C.@ L-n mirrorbase C ~ldism adjusting~, and change
tie Imtion of mirrorbase C to the frontframesideor rear frameside (dirdon A or B). (SF-~ on~)
cati~
c
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s IJ
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=Mimkc
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SF–7700SF–7750
@ Manu41y rotate the mirrorbase drive gear to move mirrorbaseA until the Iefl side of mirrorbase C mea in ati with theleft side of the refitir of mirrorbase A, while watchingtimstraightabove.
@:Ch&k to _ if the left side of mirrorbase c frame is ~ralieito the left side of the refl~or of mirrorbase A.
o / Mirw baaaCb=Lb
~ MirrorbaseA
~
1“
\
—
1,
4 *Lb
“@ If the kft side of mirrorbasa Cframe is parallelwithfha ~Sideof the rewor of mirror base A, the ad~stment has bean-plete.
(5) Vefii-1 skewadjustment “Byadjustingthe heightof the frontframe side of mirrorbase C, theheght of the mirrorbase C frontframeside is balan- tothe heghtof the rear frame side, to adjust verti-1 skew on the OOPY.Sefore thisadjustmentis started,it is n~ arythat the mirrorbaseA parallelismhas been propedyadjustedto mirrorb- B.~is adjustmentis rquird for any of the folwng reasons:● After replaament of mirrorbase A, B, or C.. Afterramovdor r@aWmentof apart withinmirrorbaseA,B,orC.. When a mpy Iikethe one shownbati is produ~.
——
‘*LSL—
10-9
.,.2.+.,..,.*, .. ..y,. . .. ,-,..,.,.....
SF–77OOSF-7750
@ Prepare a sheet of A4 or 11” x 8-1/2 paper for an origin~ ad @ If LF is not ~ual to LR, loosenmirrorbase C frontframe Sidedraw a paralld line IOmm from the lead ‘adage of the paper. heightadjustingnut.mis has to be exati,
: Parallelline .
\
1.J
– lom .
- 10U
@ Place the originalon the originaltable.
1 foradjustment
@ Make a mpy in the norfnd mode.@ Measure the distan~ of LR and LF (figure).
+
,>
,
n
If LF is largerthan LR:Turn the ad~sfing ~ ~ (arrowheadA) to inmeaaethe heightof mirrorbase C f- frame side.If LF is not greater than LR:Turn the ad~sting .wew artt-kwiae (arrowhead B) todmeaae the .heigti of mirrorbase C frontframe side.
@ Repeat above@ through@ untilLF hmes ~uti to LR.@ Tghten the heightad~mng ~.@ Chd your adjustment.
(6)MirrorbaaaCmm wmon adjuatmant(SF-~Wonly)Themm is used to change the -n of mirrorbaas C to Fasthe lens exam to the given megn~tion ratio. That is, OID isvaried to meat the magn~tion ratio.Campositfonn-stobead~edtiarry oftifolkrwing reasons:. After replamment or removalof the mifirflens dWe motor.● Afier r~la~~nt or r~~ of the ~ driveworm gear.. After repla=ment or remov# of the mimr base C drive =m
is tit attained in-the errl~e or reduoamode.@ Loosenaetsorewthat hoM the - drive wrm gear.@ Turn poweron @ set the mag-tion ratioto norrnd (xl .00)
@ Wme&wer off.,@ Withoutmovingthe wmi~ ~~r d~e s~fi, m~te ~ _
worm gear and matd the two oam Mea ih mimr base C withthe two _ ho~ in the ~ base C _ hotder.
/%’ ‘
c
10-10
---- ,.... . . .-..,----
,- .-e . ..= — .--7. .., . . . . . . . . .— .,.. -----,-—- . .
SF-7700SF-77=
@ Inaerttwo M3 x ~ ecrewsthroughtRemirrorbaaeCcarrrhoMerhole to the mirrorbase C cam hole.
@ ~gtien cam worm gear holding~.@ Remove the WO screws.
In ‘Focus adjustment-1(at the centerof the copymage)
Focus ai the centerof the copy image can be adjustedby changingthe locationof mirrorbase C.It is eeeerrtid beforethis adjustmentis done that properparallelismfor mirrorb-s A, B, and C, are wrrect.FOCUSadjustmentis r~uired for any of the folbting re~ns:. After movingthe mirrorbase C positionor replacement.. After replacementof the lens... After re~acement of mirrorbase A or B.
(SF-m50)@ Loosenthe mirrorbase C drive cam shaft nut.
@ Remove the tight side upper, rear panel.@ Unlock the optical unit l~k lever and sightw lift up the optica
unit,withoutunfasteningthe two connectorsbetweenthe optidsystem and the prqsa unit.
@ Rotate the mirror base C poaitfon adjusting shaft with ascrewdriverthroughthe clearance between the _ systemand the processunit.
@ Completelyc~ the optid unit.@ Place the test chart (UK~~9CS~ or,re~utiorr test hart
on the o@inal table.@ Make acopyortart A3(ll* x l~copypeperinthe norrndrnode.@ Check the focus at the center of the copy paper.
@ Ifthefocus isproperandtheresolution ismorethan5.Oline~mm,tightenthe shaft securingnut.
NOTE: Pay attentionthat the mirrorbase C positionadjustingshaftdoea not rotate.
If a properfocus is not aflained, repeat steps@ through@.
.
10-11
(sFm)@ LoosenMirrorBase C Positionadjustingshaftsecuringnut.@ Tumthemirrorbaee C_rtadjueting shaftwithaecrewdriver,
Q
@ Place the teat chart (UK~_S~ or rmution test charton the originaltabfe.
@ Make a~&anA3(ll* x l~copypeperintheno~~ mode.@ Check the focusat the center of the copy paper.
I 1a
@ If the focusisdearartd the resolutionis morethan5.Oline#mm,Whtm the shaft SSCUriqn~Hthe properfocusia not attained,repeat steps@ through@.
f ) F~a us adjustment.2(at the comer of the copymag...
(SF-=% ~iy)~ focus of an itige at the corner must & adjusted by th~horizonti Opfid =k of the lens (~ horizo~ itiination).Beforethe adjuetmarttis done, it is asaenti~ that properpardleliarrOf the mirrorbSS8S,A, B, @ C, @ me f~s at We ~ntw dcopy image is ~in .~catione.-y mmer focus adjustmentis r~uired for any of the followi~reasons:● After replacementof the lens.. After replacementof the lens k.● Afiw mpla~nt of mi~r -s A, B, or c.@ ~;~&horizont~ opticalarrisadjustingeccentricscrewon ths
I
i:.>;>;~..: .,,..;..... ... - .,,. -.----~ .-..—... .. . ~ ...-. .. . . ,. .,
SF-77OOSF-7750
@ Plain the test chati (UK~~9CS~ or resolutiontest chafi Adjustmentisnot~ui~ ifthe U – LBdifferenceisnotgraateron the originaltable.@ Make acopyonan~(ll” x l~~pypaPSrinthe normairnode. than 2.Omm.
h the M – ~ diff~@ Check the focus at the comers of the copy paper. is greaterthan 2.Ornm,move”thelens
~a~’tiards the rear frame side (arrowheadA).tf the U - LB diffe~ is not greater than -2mm, move the
.-. kns frame towards.-, the W frame side (~, \ B).t ,! 1’ ; (sE-noo)●- \
A
,-,1; \ T\ .- *Y paperM (11- x IT)
Lensframe
// @
Ch- thefms at mmers- ni1——
@ If the focusis clear and the resolutionis rnoreth~ S.OIine#mm, LMsanthelensframeWing ~
the adjustmenthas been complete.If the properfocus is not atttinad, repeat steps @through@..
(9)Hodzontalopticalaxis adjustmentThe horizontalopticaf axis must be adjusted by moving the lenslocationtowardsthe front frame or rear frame side.Beforethe adjustmentis done, k is essentialthat properparallelism~ the mirrorbases, A, B, and C, and the focus at m ~nter a~ .,comers of the mpy, image is withinspacificstio~.The horizontalopticalaxisisrquiradforanyofthefollowlW reasons:. Afterreplacementorrelwation of thelens,lensguiderail(SF-77W
only), mirror,mirrorMse wire, or lens base (SF-7750 only).@ Place a sheet of A4 or 8-1/% x 11”white paper on the originaf
ta~e l~q ss shon in tie figure blow.
,
I I I L
[
-,’
@ Load the A4 or 8-IIP x llm paper in the cassette, Iandsq.@ Make ampyinthenom@m~e withtheoriginalcoverteffo~n.NOTE: The shadowed~rtion of the A4 or8-1/z X 11”paparmust
stay flat on the sudaca of the odgind table.@ Compare the white area in the copy (LA) with the widthof the
paper (LB).
m------LB
Mite srea
------A4 (S.1/2 x 11)paper
B
NI tonadarea
(tipy paper)
----- B-F----- -J
(SF-775O)
(10) Venial ditiion copy magnifi~tion mtioadjustment(SF-~W only)This ~ be adjustedby,changi~-he presetvalueof testcommand4S, becausethe kns home pos~ is determinedbytestcommand4S presetv~el
TeatCornrnti 4Sprbt vslue1 --------- ~ 4g 5051 ~ ----- -.= gg
11111
Xo.u 1,.-I
r II (MPS) outputIev@II IIII 1,11 XL5411,111,1 :.I I ‘, I I
Redw -
‘w’_ ~large
(Lenshomepositin)
,.
10-12
.-‘“-—- “‘“‘“”” ““ “ “’”“-:’-’
SF–7700SF–775O
me reference point for the lens home postion sensor (normalmode) may be changed usingtest command 48. Changingthereference numberchanges the point at which the lens stopsinthe 1:1 mode. ~is replaces the need to physicallymove theLHPS:for adjustment.me referencepointof the home positionsensorcorrespondsto thelens number. Adjustmentmust be done when the mim bases A,B, and C are in completeparallelismand the copy image is inexactfocus.Adjustmentis rquirad for any of the followingreasons:. After movingor replacementof the lens home positionsensor.. After replacementof the lens.. After replacementor change in the tocationof the mirrorbase.● After replacementof the main PwB.● When.the troublestatus U2 is displayd.● After replacementof an IC3 (RAM) withinthe main PWB.@ Place the scale over the originaltable as shown below.
@ Make a copy on the A4 or 8-1= x 11” paper.@“Compare the scale image on the copy paper with the lengthof
the scale.@ Obtain the vertiti diractioncopymagnificationratio@mpansa-
tion value withthe foltowingformulain use.Veticsl directioncopy mwnificatiorr ratio compensationvatue .(MRc~ = (ofiginaiaie‘-~w imagesize) x“,m%
originalsize(Example)
IOOmmde(orginal)
lmm s~er man
theale image
onthe-Y (1%)
Vertti dir-on ~ magnfi~thn=t~)x 1~= 1 [s]
rati m~astion vkue (MRCV)
10– 13
. ,. . . . . .. ... .-...
@ Executetest command48.Push C ~ P + O+ P + [4] - [8] ~ [PS~.With this, the previouslystored preset vatue is displayed.
@ Obtain the verticatdirectioncopy magnificationratioadjustmentpreset vatue in the followingway:Vetical direction copy magnificationratio adjustment presetvalue =, previous preset value (displayed at @) + veticaldirectioncopy magnificationratio compensationvalue (MRCV)x 10(Ex)Previouspresetvalue’= 50, Verticaldirectioncopymagnificationratiommpensation value (MRCV) = 1[Yo]Vefiical directioncopy magnificationratioadjustingpresetvalue= 50 + 1 x 10 = 80
.@ Enterthe newve~ical direction@py magnificationratioadjustingpreset value.❑ + ❑ + Psw.Changingthe presetvalue by “~”changesthecopymagnificationratio0.17..
@ Make a copy in the rrormatmode and mmpare the scale imageon the copy withthe actual lengthof the Wale.
@ If the size of the scaleon the copy image matches with theactuat scale size, the adjustmenthas been mmplete. Repeatsteps @ through@ untilthe adjustmentis Schievw.
@ Can@l test command48.Press the CLEAR key.
(11) Copy leadedge adjustmentCOPYlead edge adjustment is r~uired for any of the followingreasons:● Afterreplacementor relocationof the mirrorhomepositionsensor
(MHPS).. Afler replacementor retocstiorr.ofthe mirrorb&e.● After replacementof the.PS rolteror PS clutch.. After replacementof the main PWB,● After replacementof an IC (RAM, IC3) withinthe main PWB.● When the troubtestatus U2 is disptayed.● After rapl~~nt or relocationof optical componentssuch as
lens, mirror,mirrorbase.In the norrnd mode, image lossshouldbe Oto 3.Ommand the votiarea Oto 3mm.Copy lead edge, image loss, and void area adjustmentsare donewithtest command50 and 58. ~ PSS activationtimingis adjustedby test command 50 in order for the image on the o,riginatto becopiedon the given area of the copy paper.tmmediatetyupon dea~vation.of the mirrorhome positionsensor(MHPS) after the mirror base has started to move, the time andpulses are counted within the CPU. ~ PSS is adve when thetime and puises set by test command 50 are reached. ,~ timefrom when the MHPS turned off until the PSS wms ative differsa~dingtotheentarg, hormat,andredummodes. (S~500nly)Wti test command58, the blink tampdeactivationtime is adjustedto adjustthe copy lead edge void area.NOTE: ~ecopyleadedgevoid areais ~heived bytheblanklamp.
5A. Plaa the scaleon the otiginalWble. ~,
&
L
,
.. ., ..-’
B. Exwute test command50
~F~gR)C + P + O + P ~ 5 + 0 + PSW to exwute testmmmti 50. As the ready lamp turns on, the wrrent mumberbetween1 and99 isdisdayedto showtheatentsof ~C-a.
@ Press O two times (00 displayed)and the PSW key to reset thePSC-a. At the same time a apy is made, the @ntentsof P=-ais reset to 00.
@ Press the PAUSE key. ~e’pause lamp turnson.The fgure preset (O-w) is displayedto show the oontentsofPSC-b.
@ Press O twice (00 displayed) and the PSW key to reset thePSC-b. At the same time a oopyis made, the oorrtenteof PSC-bis reset to ~.
NOTE: Seth PSC-a and PSC* are Presetvaiw ~ti ~e u-to determine the PSC ~vation timing,and are mereforestored in the memory.
PSC-a is the preset whish is used to adjust lead edge variationduring magnifi-tion mode. Unless it has been preset proper~lead edge registrationwill vaw dependant upon the differentmagnitition or red- modes [email protected] is the preset whbh is used to adjustthe PSC Wationtiming to match the top of the dmm image wfththe lead edgeof the W9V 9aDer.
@ Make a’ b’~” in the. r~ution mode (xO.84) and in theenlargement mode (x1.41) and measure the distanoefromthe
o
mpypaperlead edgetothetopofthe-e imageonthe-y.
Llllllllllllllllllf!~ lllllllllllllll
10 m m
\kk edgeof theSIeimageonthe”mpypaper .. .
I (R~um fflpy(xO.&)
SF-7700SF–7750
@ Obteininothe value of P=a end PSC*.There”ar; two ways of obtainingthese values.Fi~ the formulais used. M, the tabte is used.L1 = di~ betw~ the mpy paper lead edge to the -eimage in the enlargesopy (x1.41) mode.L2 = dim betweenthe oopy paper lead edge to the Soaieimage in the reclusesopy (xO.84) mode.. Use of formulaPSC-a = 11.81 X (Ll - M)PSC-b = (18.85 X U) - ~.~ X Ll)Measuringunit is mm and frestionsare rounded.● U*.of tsMe (page l&2~Obtainthe value fromthe tie.&le:L1 = 14K = 10P~-a = 47PSC-a = 61
@ Pr~ the PAUSE key and ti’pauee ~ goes U@ Pm~U+U~~W@~h=-a@mobtiti in@.@ Press P + ❑ 4 ❑ + PSW to enter the P~-b value obtained
in @. me pause ~p turnon.)Se oarefulnotto entera- figurefor PSC*, as it may musea deviationof 0.1lmm, regard- of the rnagnifiation ratio.
@ we a -yin the_ mode and make sure that the leadedge image ~ is tin a range of 0*0.5mm..tfthe image~ is notwfthinthe aboveMmits,~ange the PSGbso that it is withinthe limits.
llllilllllllltl}llllltl~~l~l~~!lltItIIIllllllllll!lllllilllll[llllllltillllllll10 20‘. 30 40 50 60aum70-’80
llitllliilll!ttIllltllllhl]llltllliltltltllillilht
t
Leadedgeimage_ O*O.-
I Normal(X1.oo)mode
NOTE: The image b ad- value enteredby testoommand50 is @et for ad”~ and is not the find v*e. Findad~stment must be dons by test ~mand 5S (~ badedge void area adjuetmen~.
.@ press the CLEAR key ~ ~1 test oorrrmand50.
As the ready lamp mea tive, the arrent number between1 and 99 is displayed.
@ Make a-yin the normalmodeand~-the Ieadedge imageloss.If the lead edge image ~ is tithin limitsof 0~0.5mm, thereis no need to changethe mrrent preset Value.
10-14
1
.... _ ..s.-.-.. -_.. J-. .....- .s - —.--— - .-. . . . . . . . . ....—--.. . --,--- 7-,---
SF-7700 “SF–77S0
lllillllllllllllll}lllJ!Jl~\J~l!lilll !11111111Il!llllliIllllllllilllllllll II10 20 30 io Jo Jo”’~=70-’Jo
IlIlIl~~IlIlIlJIlIlIlIlJIlIlIlIl4IlIlIlIlJIlIlIlIlJIlIlIlIldIlIlIlIlIIlIlIlIldIlIl~IlIllttltlllllttltttJtltillttltllltlllttllllltiilllttlJllil
NOTE: The image baa adjustmentvalue enteredbytest@remand50 is just for adjustment and is not the find v~ue. Finaladjustmentmust be done by test mmmand W (mpy leadedge void area adjustment).
If the lead edge image loss area is not within the fimits,do wefollowingoperation.
@ Obtain the test remand preset v~ue.a. If the image loss is greater than 0.5mm.
lltttllllllttl~\lJl~!~lllll1llll1lllllilllllllillllilllllll111[1111111
o 20 30 40 ,50 60”-70-80
lllllllllilllllllllllllllllilllhlllJlllllllldllllllllJlllllllhlllltillJlllhhlillllllllJlllllllldltltilltJllltllllJillllltdllll
(m)
I [
Test remand ~ preset Value = w- storedvdua - (M / 0.11 )
b. If the image has is greater than -0.5mm.
I
.
... .... .. .
Test mmmand W presetvalue = wrrently storedvalue + (M / 0.11 )
@ Enter the test oommsnd50 preset value obtainedin @.Press[P]+ ❑ + U + [PS~ to enter the presetvatueobtainedin @.SS=*I not to entera wongfigurefor testmmmand 50 presetValUe,as it may oause a deviationof 0,1Imm.
@ Make a mpy inthe h rnodeandchdthe lead edge imagem.If *e lead edge image loss is within limits of O to tO.5mm,_ to Step @.Ifnot,repeatsteps@ through.@untiltheresubaresstisfadory.
@ Press the CLEAR key to -1 test mmmand 50.
C. Placingthe scaleand a sheetof white paper@ Pla@ the sale and a sheet of whitepapef on the ofigmaltable
as shownbelow.,.
4
D. =-ming test command~@ Press C + P + O + P + 5 + 8 + PSW to exme test
mmmand 58. The- magntiti ratio*anges tothe normal ~mode (x1.00) and the mmw stored numberis displayed.
@ Make a~inthenormd rnodewiththeorigin~ marleftopan. eNow,enterthe _ modebad* voidarea adjustingvalue t~ ~t~ *e @the al tonedarea shows2.Ommof the W* ~image on the ~. jPress 0 + U + [PSw. Then, a my is produced,and at the ~same time, the @ue entered is stored. Changingthe v~ue by j,“1” Wses the - area to tienge 0.22mm. ~
F~~R* *k imageonmy
; ll~ltlllltl]lll tlllll~l~j~!!ill t~!ltllltlllll! /llllilll Illllttllllll10 20 30 40 5:0 60WWS70W
!:llll~t{!tlll~!lillll~llllltihtlllllllllllllilil~illlilll~\lltllll~illil!l~l
////// Edgeof alltonedarea
10- 1s
@ Ch@k to see that tie image w and void ama are withinthelimits.(Limits)Image loss: Oto 3.OmmVoid area: O to 3.Omm
A LI Void areaOto3.Omm
pa~ lead
;
@e%k imageonWY
ll!lll]llll\llil]llllll’111/40 50 60””
I~~ Ilillllllllllllliillillllllllillllllllillltlllll
I [~ E@-eofall-ted area//////// Wmal (xl.00) mode
- - ~im~ -, 0 to3,0mm
@ Press the CL~R key to m-l test @remand 6S.NOTE: When the PSC-a or PW-b value is oharfgedusing test
mmmand W, the oopy bad edge void area must beadjusted again usingtest mmmand W.
(12)Side void area adjustmentThe Sidevoid area adjustmentia ~uired for arty of the folhingreasons:● ARerdisassemtiy or rapla~ment of the blank lamp unk
Side void area limits:6 to amm@ Place a sheet of A3 (11” x In whitepaper on the originalMe
as shown in the figure be~.
@ Make ampyinkenormalmode withtheorigindmverleft open,~ Measure the side void area.
Sidevoidarea
r
paperexitdirwion
Alltonedarea
u .
.
SF-7700SF-77M
@ Adjustmentis not~uired if the sidevoidarea isMthin the limitsof 6.0 to [email protected] not withinthe limits,move the Nank lamp ~ R to adjust.
10-16
“ ~~----–-–-.-——-4-.. .:. --..s---.. ---.--’-
-..,i~-:~.b,.. .~x%-:iz ..: . ... . . ...-..: . w :.I
SF–770QSF-7750
4. Major pafis repla-ment(1) Replacingme copy lamp@ Removetheoriginal dgnment plate and remove the original
Me glass.
I
I
Removewrews
/ [
@ Menudly move miw base A to the out in the rear frame side.
Cutintherewtime tie
* imp e-de, I
@ Push the oopylamp et-eon the rear frame sidewitha pairof tweezers in dim A to remove the oopylamp.
Hints and tips● MWe sure mat el~rodes on both sides are firmlyengaged into
the ~bts.
. installthe WY lamp withthe protrusionon the lamp faoingup.
Refl@or
(2)Replacingtk mirrorhse drive wire
A Opening the optbl system@ Remove me origid we glass.@ Open me frontpanel.@ Remove the rear side, upper rightpanel.
RemovetherearSale,(@htu~ panel _ unit
@ Unfasten two aonn- between the ow system and tiep-as unit..
@ Unlti me opti~l system Iti lever by pushingthe lever in 6
dir-on A. Open up me optil system(dir~ion B).@ Su~ the op~ unit M the supportbar,
B. Rsrnoting mim baas A@ Remove eaah mirrorfrofdingplate l~t@ on mirrorbase A on
both frame sides ,ti the mirrorbass drive wire hddirrg date.Remove the mirror b- drive wire from mirror base A wimgroove.
M
@ Move mirrorbase A to the rear frame cut in the opti~ unit.
mpyImp
?0- 17
@ Retive mirrorbase A from the mirrorbass rail.
C. Removing mirror base B mi~r hold~@ Move mirrorbase B to the frontand rear frame side M out,and
fix mirrorbase B to the front and rear frame side mirrorbase B
(d
holdingplhte with a wrew.
~Remove *reWsMirrorbase
.,./
B
&et
@ Remove the mirror base B mirror hold~’set Wrws ~m thefront and rear frame sides.
@ Remove the mirrorbase B mi~r hokferfrom the mimr base Bslide unit.
[i
D. Removing the mirror base drfve wireRemove amponents in the folbwing order.@ Remove the springon one end of the mirrorbase wire from its
hook on the mirrorbase B holdingdate. me other end of thewire is held by a sorewon the rear frame side.
@ Removethe rnirrorbasedfi~wire in theorderof pulleyc, mirrorbase Bpulley(inside),pulleyB,andthe mimorbasedrivepulley.
@ Remove the mirrorbass drive pulleywire swuring ~rw.
bees drivepulley
~ @Removethemi~or~dnvewi@ in*eOrder Of.*.Mimrbase drive pulley, pulley A, and mirrorbase pulleyB.
@ Remove the mirrorbase dtive wire from its hook on the optidsystem frame. The other end of the wire is held by a wrew onthe rear frame side.(~ thesame for the rear frame side.)
SF–7700SF-775O
E. Stretching the mirror base drfve tireStretchthe wire in the followingorder.
PulleyC -
/Pul@yA ‘@
@ Holdthe end of the mirrorbase drivewirewiththe springto thehookon the_ systemframe. M the otherti of the wirewiththe ~ on the rear frame side.
@ Route the minr base drive wire underthe mirrorbass B Side@ateand appfyit to pul~ B.
@ ~ ~ wim on Wlw A and routeit underthe mirrorb- Bsl~er, and make ~ht turnsof the wire nnd the mirrorbasedrive wiley. The fourthturn of the wire mustrest in the grooveof the pulley.
(F~tframeside)(Reartiame~de)
@
@
A~~ the wire to pulleyB and route it underthe mirrorbase Bslide unit.Applythe wire to ti mirrorbase B pulky and pulleyC.Hook the mirrorbase drive wire @ng to the mirrorbase drivewire.Hook the mirror base dtie wire springb. the mirror base .Bholdinghookand hoti the other end withthe waw on the rearframe side.(b the same for bothframe sides.)
10-18
@ S=ure the “A turn of the we to the ~lley Mh the _ineert@ in the ~llay groove.
)
.
....... ......- Mmr k A
Slide
aides
10- ?9
@ Insert the lens base drive wire ball in the Ml rest of tb” lensbase drive wire pulley.
WireMl resr
,/
To* ‘“
@ Move the lens base M the way to the paper exit side, but thelens unit a not disengagefrom the lens guide rail.
@ Pull the one end of the lens. ~ drive wire with the lugmunte~ise. ~ it to pulley B end pul& C, then tig~M ton me mim _ M.
@ w.nd the other eti of the Are wnd the ~ * d~ pulky~ea atartingfromeboveand mmethreetumsofthe ~re.
@ Apply the wire to pulm A and fasten it to the w base drivetire Spring.
@ Adjust the position of the mirror base am, in rafe- toParagraph 3+. . . . .’. .
(4)R~lacing the CL wire harness~eCLtiting ham&s needstobe repla-atevery la, ~~s.@ Remove the origin~ table glass.@ Remove the dieplayjoperationunit.@ Remove the CL wiringharness --r from the frame. ~
CL wiring harness is kted on the opt~ system tint frameside.
@ Remove the CL wiringhameas wiringties.@ Remove mirrorbase A, in referena to Paragraph4(2)-B.@ Remove mirrorbase A, PWB @ver end mirrorhoMingplate.
@ Remove the ~ that ~ the CL W oonneotedto the AE
@ Ramovep~kt frameX’AE eaneorPWB q ~ tietsensor
Wing mew.@ ‘Removethe eorewfrom the AE sensor PWB with the CL lead
tim mirrorbase A@ R-e the ~ fuse fromthe AE m PwB.@ =~ thwd ties on ~ AE aenaor~ a new CL wiring
@ Wipathesurfaosof the AE aensorwitha- ~h~dmoened :with ~ or water.Oo not wipe with a dry H R tiy a- more duat.
@ InWl the AE ~ PWB m. mi- bees A. Ensurethat thethermal fuse is in ~ withthe ~.
AEsensorW
10-20
-.--—-..
@ Mouti the mirrorbees A on the mirrorbase reiI, in rtier~ ~Pam9~ *(2)-H.,
@ ~~tiperaffafiemformirror baee~ innsf~ to Paragraph
Lens
10-21
Lansnu&r
/
—-exit side
“n” 4
: “’-’ ‘-—---”-—----- . . .. . . ....... .. -.=--..-.— —-
‘_--- u..’SF–77OOSF–77=
D. Ad~usting the lens guide rail position (SF-7TW only)@ Loosen three screwsthat hoti the lens guide rail.
—,
—. .——. . . .- . .,
@ Slide the lens guide rail in the arrow dir~orr and match if tothe lens numbr.
/
I
,
I:,,‘1t
i:
&I ‘?.,.!&-.
I
u .
.
d --d
&,&#,,.,,
e .@Lensguiderail
E Entering the lens numberB~ausa e~h lens has a variationin itsfti distanm, lens~ngdistance in the magnificationmde mustbe appropriateto the f-distsnm of an individuallens.If the lens mov~ by the same dist~ in the magrrifieh modedisregardingthe variationin the individudlens, it willsdvers~ aff~the ~py magnifimtionratio.To prev~t this, the fd distan~ (lens number) of the irrdividusttens is @or~ in m~ry with test mmmand 77. This mOVSSthelens a~rding to the spp~ate f- distane of the lens,toobtaina copy in the-ex~ ma9nif@tion ratio.
@ ~~;~t -rnand ~ in the fol~rtg manner and preset~ng the lens number.
Preee C + P + 0 ~ P ~rn+a+ PSw (reedy lamp turnson) + ■ + ■ (arren~ storedpresetvsfuedispfayed)+ ❑ +D (new presetvalue)+ PSW + -, replete and the readylamp goes W
Lensnumber Testwmsnd Lensrrumber Tsat~ti??preaetvdua ~paatvetue
-4.5 1 0 10-4 2 +0.5 11
-3.5 3 +1 12-3 4 +1.5 13
-2.5 s +2 14
I -2 6 ! +2.5 15{
-1.5 7 +3 16-1 a +3.5 17
-0.5 9 +4 la1 I
.- 1
F. Adjuetfq the GAdjust the tis, in refererrosto Paragraph3(T and (8).
G. Adjuetfng the ~ntef xl exisMhst the ~ ~ axis, in ~ to Paragraph%(9).
(6) R~l~ing mimom
A *.1 mim@ -e mirrorbase A fromthe mirrorbase rait,in ref~ t?
Parag~ 4(2)-B.@R& the ti.1 mirror~ pfete, mirrorMing @stee
F end R.
- baseA frameFI
/ M.1mirror
. .,$/”
, /Y L
A
10– 22
.
SF–7700SF–7750
,.., .:. . .>.:<-.”..,., .. . .. . ..... .%-
@ Slidethe No.1 mim in arrow dir-on A, ~i it up in dimB, men pull it out in amw dir~on C.
NOTE:. If tiere is any pro~ern in h mirrorbass A frame F, R, r-or,
mirrorpos~ning @ate, or its ~, h entim”mimr base Aunit must b repla-, -use mmpnertts in the unita Mwbe f~ow adjusted.
. After re~acing mimr b- A on the mirrorbase rail,irrstdlmirrorbase A W its tied SUdaoafm~ UP.
● =ert wed not to eoratohthe ooated mirrorsurfaoe.
B.No.2 ati No.3 mirrom
a. No.2 mirror@ Remove the mirrorbase B mirrorhobfromtha mirrorbase@
slide unit, in refem to Paragraph4(2)4.@ Press the mirrorbase B and the No.2 mirrorHng me R in
arrowdir-A, arrd~idethern in~di~on Bto remove.
plate~
@ Open up mi~r base B and the No.2 mirrorhoMing@te Fa inthe arrow dir~ons C and D, and remove.
@ Press the mirrorbase B and the NO.2 mirror-ing plate Fbin the arrowditiorrs E, end slMe them in arrowdir- F toremove.
@ Remove the No.2 mirror from the mirror holder in the mwdir~on K.
NOTES:● When installingthe dongated hob of the mirrorWing me ~-
must be firrrr~ engaged to the mirror holder frame. And, makesure that the mirrorholdingdate Fa isfirrn~engagedto the mirrorholderframe.
. When installingthe mirror,the ooated surfaoaof the mim mustfa~ &wn.
b, No.3 mirror@ Slide the No.3 miWr hotiing plates F and R towardstie front
and rear frame sides (arrowheadI and H) to remove.@ RernovetheNo.3mi~rfronrthe mirrorhoMerinarrowdir@on J.NOTES:● When installingthe mirror,make surethatthe mirrorho~ingdates
~ and R are firm~ engaged.● Install the mirrorwith its ~ted surfa~ facing down.
● ~ not irt-1. ~ No.3 mirrorWing @ate F in @am of plate R,* they differin ahape.
Mmr Wim data R
@ Press the No.4 mirrorand the mirrorWing plate F in arrowdir- C, - sl& them in ~ diraotionD to~e.
@ Slide the No.4 mirror in arrow dition E, ~i it up in arrowdir-n F, than pull Rout in arrowdition G. e
NOTES:● Whenitifing the mirror,make sure matW dentin the mirror
Wng date F isw engagedtotfre mim base.Cframe. M,make sure that the ~ated M in the mirrorNing plate Ris finrr~ engaged to the mirrorbase C frame.
● Themirrormuatbeineta~with itsooatsdsurfti faang tiwrt.
D. No.5 tirror@ Remove mirrorbase C..
.—-—. —-
1..— !.—(SF–77W) (SF–77W)
e
10– 23
.—-———- .-.z.,”.-= —.qa<. ,-,--—_c_..._c-. ->— ---- ... _-
@ Slidethe No.5 mirrorholdingplatesFand R inthearrowdir~nof A and B to remove them.
MirrorhoMiWplateR
\’//
ngdate F
I \\
WY< -.... ‘“. .,.
.. ,.
No.5mirror/’.;. ,,:;~., , ,
<,’
.
*
SF-77WSF-7750
@ R’amovetheNo.5miwfrom mim~C in~di- C.@ After@ating the No.5 mirror,itilmim~Contha _
system -is d djuat the mirror ~ C @ldism, inreferen~ to Paragraph3<4).
NO~S:● men ins~ling the mirror,make aurathat the mirrorWng date
is firmlyengaged to the mirror~ C frame.● W mimermust b inti~ with its mted suti~ faang up.. ti not in~l the No.5 mim holdingplate F in pl~ of plate R,
as they differ in shape.
% %
E. No.6 mirror@ *n me oPtil Wstem, in refarenoato Paragraph4-(2)-A.@ Remove the optti system- rover.
/5’,\\
.,,
1
@ Prassthe No.6mirrorsnd miWHng@ate RinmdireotionA and slide it to the rear frame side to remove.
NOES:● mm intiing the mirror,mskaaurathat me dent m me minor
ho~ing plate F is fi@ engaged to the _ warn tie.● ne mirrormust~in~~with its~tadsudtiting *.
~ Lens holder
using a wrawdriver and un~k the kns htier hookfrom melens ~.
— -—.. .,-— .. . ...
‘“-SF-7700SF–77S0
@ Unlink the rear frame Sde lens holderhookfromthe lens baseand lift up the lens holderto remove.
B. Reassembling the’ lens hotier@ Put the rear frame side lens holder hook into engagementwith
the lens base.@ Set the lens slideronto the lens guide rail grme.
@ Press the frontframe side lens holderhook in arrowdi~on Awitha~ewdriverand pushthelsnshotiwin~e mdir*n.
@ Press the lens base shadowedportionend slidethe lens hotierin arrow dir~on C with some foru to set R in the lens base.
@ Manually rotatethelena bssedrive gear- movethe lensbase ~to fi-k that R mwes smooth~ in both directions.
(SF-~00)Remove two lens ‘~tir Wews end remme the lens hotier fromtheoptid system hesais. ‘
Lenstier
NOTE:
10- 2s
—-——— ... .-— -- ----
Adiust the horizontalopti=l =is after iristailationof tielens, in reference to Paragraph (3)-9.
(8) MIXllan-usA Mlrrw base B.q-If there is trou~ in the mirrorhoMerof mirrorbees B, mi~r holderpositioningplate, the whole mirrorbase B unit must be replaced.m not move the Imtion of the mirror Mder poeitionin9Plate%ured with the red ~rew. c
(Mirrorbase)c
B. Mim base eilderThr~didereareud-in mirrorbaeeAandtirin mirrorbeaeB.wan a mirror base slider has to h r@a@, MW mu~ all @r** on that mirrorbase at the same time. Setim partsmirrorbass shder(CSU_7FW) ataina four-s of sliders.~tiertging onw one piw may reeuti in mirror base tilt, loosein~lstion, image Mur, or image skew.
(MirrorbaseA)
I
.,. ....----------------------! “
vSlider
.-’”
SF-77WSF-77m
10-26~ ----- .. .. .- .
SF–7700SF-7750 !
CHART FOR PSC*, andPSC-b,SET NUMBERL1 = the led e6w im~ 1- in ‘theenlarment mo6e (x 1.41) A = Numberto be *t (PSC+)U = the lee6 ~ imew 1- In the Auction @e (XO.W) B = Numberto bes (pSC-b)
cLI 6 7 8 9 10 11 12 .13 14 15 16 17 18 19
L24.5 R 16 24 30 35 41 47 53 59.65 71 77 63 89 94
B 30 26 22 16 14’ 11 7 3
5.0 R 12 16 24 30 3S 41 47 53 59 65 71 77 63 69 94B 36 34 30 27 23 19 15 11, 6 4
5.5 R 6 12 18 24 30 35 41 47 53 59 65 71 77 63 a? 94B 46 42 39 35 31 27 24 20 16 12 a 5 .1
6.0 Q 6 12 18 24 30 35 41 47 53 59 65 71 77 63 89 94B 55 51 47 43 39 36 32 26 24 21 17 13 9 S 2
6.5 R 6 12 16 24 30 35 41 47 S3 59 6S 71 77 83 89 94B 63 59 55 S2 46 44 dO 36 33 29 25 21 16 14 10 6 2 .,
7.0 9 6 12 18 24 30 3S 41 47 53 59 6S 71 77 63 89 94B 71 67 64 60 S6 52 49 ‘4S dl 37 33 30 26 22 18 14 11 7 3
6 12 16 24 30 35 41 47 53 59 6S 71 77 63 89 94 “ : : e7.5 RB 80 76 72 68 64 61 57 S3 49 45 42 36 34 30 27 23 19 15 11 a 4
a. o a 6 12 16 24 30 3S 41 47 53 59 65 71 77 63 69 94B 66 64 60 77 73 69.65 61 S6S4 50 46 42 39 35 31 27 24 20 16 12 .a 5 1
8.S R “6 12 18 24 30 3S 41 47 S3 S9 6S 71” 77 63 69 94B 96 92 89 6S’81 77 73 70 66 62S6 5S S1 47’43 39 36 32 28 24 21 17 13 9 5 2
9.0 R 6 12 10 24 30 3S dl 47 53 59 6S 71 77 83 a9 94B 97 93 89 86 62 7a 74 70 67 43 59 5S 52 48 44 40 36’”33 29 2S 21 16 14 10 6
e9.5 Q 6 12 18 24 30 35 41 47 53 S9 65 71 77 63 69 @4
B 98 94 90 66 63 79 75 71 47 64 60 S6 5249 45 ,41 37 33 30 26 22 18 15
10.0 R 6 12 la 24 30 35 41 47 53 S9 65 7i 77 63 69”94 - -B 9a 95 91 67 63 80 76 72 66 64 61 S7 53 d? 46 42 36 34 30 27 23
10.5 9 6 12 18 24 3035 41 47 53 S9 6S 71 77 83 69 94B 95 92 66 64 60 77 73 69 6S 61 S6 54 SO d6 43 39 35 31
11.0 RB
11.5RB
12.0 RB
12.5 RB
13.0 9B
6.12 la 24 30 35 41 47 53 59 6s 71 77 a3 a9 9496 92 69 65 61 77 74 70 66 62 58 55 51 47 43 40
8
6 12 16 24 30 3S 41 47 53’ 59 65 71 77 63 8997 93 69 66 62 78 74 71 67 63 59 55 52 4a
6 12 18 24 30 35 41 47’53 59 65 71 77 6398 94 90 66 a3 79 75 71 66 64 60 56
6 12 la24303541 4753S96s71 77,,95 91 67 83 60 76 72 66 64
6 12 1624303541 4753S9657195 92 aa 64 60 77 73
13.5 R 6 12 1824303s41 4753596SB 96 92 89 65 61
a
10-27
.-....-—--- --—--:. . . . . . . . .. . ,. . . . ... . . . .. . .-.s....=.....=
,’
-... ..- ...’- -. ..
[11] DEVELOPER UNIT
1. General descriptionAn electrostaticlatent image is formed on the drum surface andtoner is appliedover the latentimageto changeit to a visibleimage.
,r’ Toner is chargedbyfrictionwiththe carrier(devehper by the stirringroller withinthe developer unit. The toner is charg~ positiveandthe carrier negative.The latent image area not exposed by light is charged negative.The toners positivepotentialis attractedto that area.
(A bias potentialof –~OVDC is applied to the MG roller from thebias PWB during.the developingprocess.
.2. Adjustments(1) MainpoleadjustmentThe bouble described neti may occur if the DV doctorblade wasimproperlyadjusted. .. Lack of copy density●Toner dusting@ As illustratedin the figurebelow,stretchone end of a paper ~ip
( and,tie the other end with ,a string.NOTE: Clear the developer away from the MG rollerarea.
Paperdip
\
String\’
~ Y&. “@ Hold the stringand bringthe paper clip close to theMG roller:@ Mark the surfau of the MG roller sleeve where the clip made
contactwith the MG roller.
Mam
\
r<,- 0.-
Q, \~
m’SF-7700SF–77=
@ Measure the disfa~ between the MS* and point (A) on theDVdoctorblade.Makssura ifthedistancaiswi~in~.7f0.2mm.If not, Imsen the K rolleradjueti~.~ate screwand move if toadjust.Then,repeatsteps@to@ again,tochecktheadju~ent.
Mak I
.
,. II
DV&r Wade
@ Tightenthe MG rolleradjustingplate screw.
(2) DV dWor bladeto MG rollergap adjustmentThis adjustmentrnuatbe done after the com~etion of the man poleadjustment.Revep wcs is not permitted.% troubledescrfbednem may occur if the DV doctor.Made wasimpro@y adjusted.●Lack of WW density●Backgroundon the cow●Toner dusting !@ LoosentwoDV doctortide screwsIocatd’wifhin the DV doctor
blade.@ Insertone each of 1.7mm Wer gatigaa betweenthe MG roller
and the DV doctorblada,each one IODmmaway fromthe centerof the deve~r unit (see figure bebw).
@ Tightenthe DV*rMada~ewwhile pressingthe DVdoctorblade in the arrowdir-n.
11-1..
...
SF–7700SF–7750
@ Make sure that the gaps between the MG roller and the DVdoctor are 1,7f0.05mm at the canter and at both IOOmmbtions from the center.
1.7&o.m/
DV d~or
I
3. Major parts replacement and installation(1) .DVcover sheetme DV qer sheet must be replaced every 120,000 copies.@ Remove the DV cover sheet from the DV toner box which is
haled with doubletad tape.@ Bondanew DVcoversheetwith mates illustratedintftefigure
@ Remove the mat from the DV cover sheet.
MG seals, L and Rfie seals must be replaced ev~ 120,000 copies.~ Remove the toner box from the develooer unit.@ Bond the MG seals es shown in the figurebahw, in reference
to A’ + A, B’ + B, C’ + C, end D’ + D.
Re~ lineC
I
(2)V-ring installationNote the directionof V-ring installationand installthem es shownin the figure.
v-ring
late
.—. -(Rearkarna-) (Fronttramesale)
MG rolkr and~irrfng roflerinetatlatfonprecautions]a. MG roller instigation. Installm DSD collarwith the shorterftangefacing inside.●Installthe DV seal phte B with the protiion facing outside.●When securingwiththe front frame side E-ring,press the MG
rollerin the arrowdirmon and fix it withoutend play.
l—l ~ ./E-riW
b. Stirringrol~ installation~
Festentheshaft@rtctionoftheStirringrdlereothat apfay inaxialdir-on shouti be withinO.lmm.
(RearframeSale). I vSe&rW StirriWshaft@nr
(3) Develo~r unit conn~or installationInstallso that the cut in the connectoris at the right.
I J u
(RearframesMe)
t
.-.—----- .
11-2
[12].SEPARATION UNIT
1. Generaldescription
@
(Viw)
Auxiliaryseparationrollers
I
L
Separationpapergutie*aration roller
Trm#ar mrona
~Py paper is separated from the drum using the removertape,separation rollersand auxilia~ separationrollers.The remover tape needs to b replmed every ~,000 mpias.
2. Major parts removalRemovertape
(i~ ~. Open the frames.@ Remove the removertaps springand tie removertspa ~om~e
cut in the wrona housingbratiet.
NOTE: Pay attentionnotto deformthe anale of the transfermrona
SF-77OOSF-77=
●Note the dir~on of tie removertape tensionspting.
(Reartrsmaside)
Removar’tapa~ng \Removertape
●Make sure that the remover tape is engaged in the ti of theauxiliaryseparationroller.
●The tape shouldnot -e the separationroller.
B. ~psration roller@Removetheseparationunit from the @cr.-.@ R-e the removertape.@ RemvewgearWTand 28T. ~Shfhashsftinside toun~.,@ Remove.tha separationd~ stopper.@ tiftwawiliaryseparstion mt~~ r~veh~rstionroller.
housing.
Uff up the auxiliary separationroller and tsk~out the removertape.
Auxili~ ~ation ~lar (IMup)
R-VW tapespring
\/.
Remover~
\ \Removert- Cutinthetrsnsrarmronabd~.bradet
(Installationprwautions)●Install the removertape se shownblow.
A teflon fa@ is ~nd~ on the loop baok side.
Removertq s@ng
‘“ s“-t
-.. .-y- .—. .. .. . 12-1
,.‘“ -
SF-77~SF–77W
[13] FUSER
1. General
UNIT
description
Thermostat
\
tirmal fuse
rnermostatresetswitch \
Sta
P
A. Heat rollersand cleaningroller.A te~ fi~ is used for the upper heat d~ and a WM rotleris used for the lower heat roller.The lowercleaning rolleris impregnatedwithsil~ oil to ~aaethecleaningeffiienvt aawell *pml~9iW~e life~f~r~~~:
B. Separatorpawls.Four separator PSMS are used for the upper heat dler and threef~ the Wer heat roller.The upperseparatorpawlsare -M.wtiTeflon to red- fridon with the rdi=.
C. Temperaturemntrol.@ Temperatureof the fuaer unit is mtrolH,by meansof a heater
lamp in mjution with the thermistor,main - @ic, andnoise fiRerPWB Qic (SSR), and the tdac.A thermostatand a thm ties are used to preventharm tothe m~hine in -e of an irregu~y hgh temperafum.
Safetydevia (thermostat,thermalfuse)
cHeateri~P
II 1
I U~r heatrollersumtemperaturemon~orad@ thethermistw.
I
I 1
1 1
I I Triacis turned on and off bythe signalh ti man PWB.
In I
SSR(Mse 1
rtkerPWB)
\
@ Theupperheat rollersurfa~femparSfureia~ttol~degmsc.@ The machinesself diagnoatimwill d~ay a status de when
a fuaer mdfutiion ~ra.a. When the heat roller surface temperaturerose above 2~
degrees C. H3 displayed.b; When the heat rollersurfa~ temperaturedroppedbelowla
degrees C (H2 is displayed)or did not rise to IW degrees ~:C withinW ~. (H4.is display~).
c. Open thermistor(l) H2 is displayed.d. Open therrnd fuae(lW°C)(*l)e. Open thermostat(17~) mnta(?)
NOW (*1) : To repla~ mmponent partstic. oral. above,removethe dlert nut besidetie pem without looeenin9merelay harness.
NOTE (02) : If the the~t ~fa- are open, push the resetbuttonon the top of the thermostatto menualv reset.It does not restoreautomatih.
D. Majorparts replacementperiod@ Upper and w heat rollers:Ev~ s0,000 @es@ Lower heat rollerdeanim roller:Evw W,m ~pies@ Thermistorcleaningdk: Evw ~,~ copies@ Upparaparatorpawls:Everym,~@es (poaitiontobashiff~
atevery4,ti counts)@ Lower separatorpaws: Every W,m copies.
2. Major patis replacementA. Lowerheatrollercleaningroller@ Remove the paper exit guide aaay.
@ Remove the tier heat rolkr,cleeniflgrollerfromthe paper exitguide.
Q
●
~ heatrollercleaningrolk
/
.(%<.
~-.--, .. ... ....
-.. .-. .,,..,. .. . .
~ 7’ ---- -- -.
-.. c. . - . . - .P- exit~uideassY
13-1
.— .......-.._ .-:=-—-—- -- -- --.—
B. Thermistorcleaningroller@ Remove the heater rover.@ Remove the thermistorcleaning roller.
a
f
A- \
/mister clasniwrdk
((@ /(Resrframetie)
C. %parator pawl[Upperseparator~]@ Remove the fuser oover.@ Remove the separatorpawl tensionspring.
~retor psWtensbnspring
I
\
-“SF’–77OOSF-7750
(ShWng eePsrator~-)To rdu= wear on the heat rolkr bythe separatorpati, the positionof the aeparatorW needs to be _ evev ~,~ x.@ Loosen the thanrtistorMing -at ~ and Side the
tfretistor Waling wet towardthe frontor w frame side.
(Removal)@ Remove tie paper exit guide assy.@ Remove the cleaning@W from @ -r exfi 9u~ ~.@ Remom’the the - ~ pawfWaler w the M of the
paper exit guide, and remove the *r separator~.
separatorpaw A
@ Rotatethe separatorpawl inthe dir~on of arrowA and removeit in the dire~ion of arrow B.
I
e kw separatorpawlMer
(Reassembly) .@ Insert both tabs of the lower separator pa~s into the ~uare
hde in the paper exit guti.@ Insertthe separatorpaw hotier h the bad of We paper exit
gu~e intothe Wuare We ofthe separatorpati hotir and insertin tie M in tie sep~ati pad.
*----- ..-. ........ .
13-2
SF-77OOSF-775O
@ Insert the other end of the separatorpati ho~~ in the knd ofthe paper exit guide. Pushthe separatorpati withyourfingertipto ensure that it has kn mmpletely engaged.
bwsr separatorpa~ Paperexitgu~ebar ~arator / /
PuehintheseparatorW* Mder intok
bwer eepwatorbawlb~er p- em guti M we
(Hints and tips)1. 00 not deform the top of the I& separatorwM.2 =-R-e wheninst~lingthe peperexitguideeasyinthempier
tiatthetop~oftie peW maynotdamagetie ~erhaet~ler.3. MXe sure in in~ling me paper exit gutie essy in the @er
that the top partof the separatorpati is in~ ~ the -rheat roller se shown in the figure.
4.Mme sure that the separatorpati holderextendsout of the ~in the separator pa~ to hti the separatorfromtive.
D. Heater lamp@ Remove the rear frame side Noise fiher unitoover.-
@ Remove the front frame side heater lamp holderand unfastenthe ann~or.
@ Unfasten the rear frame side red heater lamp m~or.@ ,T*e the heat lamp out from the front frame stie.
13–3
.
~ater lamp L .—
InWIIation pro~ure@ After m- ~ of -ponents, i-l tie Mp holder R.@ Insert the heater lamp h the front frame side and route the
red m-or throughthe ~ti M of the tamp hotier R.@ Fasten the m- of the lamp Ner F we. House the
m-r insidethe ho~ri and Iati tie lampin the r~tadeof the ho~er F.
F
/
....... .,- ., “ /V“1%‘“’“‘~c
./
@ W the rear frame side lamp kads end press it towardsthefront frame side and matohthe Imp hoMer F to M instigationktion. 6The rear tie Sde of the kmp must b moved to the lamp~i~ ~stiOn @ tie lamp h~~ R @ ins~ll.
f“cw- )tip Nar F (ms~ thel-tin)
“\
.@ Installthe lamp hoMer F.@ Fasten the lamp holder R side mnneotor.
i. . .... ... . -. ,.–.-—.... ---–..._. T.-r. -.-m------ ——+-m
,.. ,
.----——...- . . -. . .. .
E. Heat roller@ Remove the fuser unit. (See 2-F.)@ Remove the heater lamp. (See 2-C.)@ Remove the heater rover, lamp holder, and thermistorholding
brati8t.
Heaterrover
m’SF-77mSF–77W
. Use C-ring @iersto remove the tier stopper.
NO=: me d in the upper heat roller@ be on the rear framedrive gear side.
/>
*P holderFv
(Front- *de)
Remove the upper side hook of the tensionspringand tileasa F. ~emostat andttiistor (timal tiae)the heat rollerten~orr with a brrg nose pliers. 0 Remove.tha AC war suDtiv unit-.
IIRemove the upper s~e W
/
FusarframeF
(Frontframe.Sde)
@ Remove the roller stoppers, gear, bearing holding sorew,bearingsand bushings,t~n remove the u~r heat roller.
@‘Remove the paper exit guide easy, then removethe bar heatroller.
~’ Rmvernekt~aatititinttie~ lmpbUa.@ Unfasten the rear frame Me white l~n mnmor, wn
w- mtidto the AC W, and the frontframe side~ lamp tin~or.
@ Remove the thermistorhtiing br~et ~ews and removethethermistorhtiirrg Hat. (It is ~ to separate the-atm PSWISfrom the heat ~ler surfaa before beginningmtspb).
@ .~~e me ~ and irrterfaoewin~hamesses, thenremovearmostat.
@ Remove me ~rews on the th-istortid fuse unit, andremovethe unit from the plate springs.
NO=: ~ not deform these plate springs when removing the~ermistor~ermd fuse un~.
13-4
.. .. ,.,.,-..
SF-7700SF–7760
~rmiatormrrniator ties unti
/-istor VW wet
t
fCh&k-out)oTherrnoq’at
Ensure that the gap @tween the thermostatand the UP* heat@ler is 0.6 to 0.9mm.
‘“”:h--7Lh-B~ ~at
////// /////////////~
0.6-O.9mm
Upperheatmilar
●ThermistorEnsure that the center of the thermistoris in C- mntad withthe heat rollersurfam.
\Thermistor
G. Fuserunit@Removethemar frame side_ fi~er unitwW.
k,
(:@ Remove the noisefiker unitwsws and unfastenthe mnn-or
andrnovethepowerswy unittothelmtionshown inthefigure.@ Remove the fuser unit ho~ing ~ end lift if up to remove.
,.,
\
1>..@[email protected] I
c
13–6
:...,,..- ..::.. , .:..“-. a. -,----------
3. Heat roller pressure balanceadjustment~is adjustmentis requiredfor any of the followingreasons:● When the Copypaper is creased withinthe fueer un~.● When a fusingproblemoccurs.. After replacementof the fusar rollertensionspring.@ Make an all toned CODVon an A3 (11*x17) DaDar.StODthe
machine when the cop~ paper is stil~in the ti’s;ngunit.Immediately,take out the copy.Measure the widthof the glossyarea on the copy paper wherethe fusiw roller was (on both the rear frame and front framesides). -
lr
@ If the width of the glossy area were to differ on either side ofthe paper, make an adjustmentwith the tension adjustingbohso that it is the same on both sides.
. Changing the spring hook positionchanges the tension of theroller. Normally,spring hook “B” is used, but, the hook positionmay be changed if the tensiondiffersbetweenthe frontand rearframe sides.Roller tensionincreaseswhen the hook positionis in “A”.Roller tensiondecreases when the hook positionis in “B”.
TensionSP
.-SF-77WSF–77%
(Rear frame aide)me tier side of the ~ (rear frame side) mustbe justover thefifth line m~ti”on the fuaer frame.
~ screwmaybe ~tadto anyIim, ifmeasing,misfeed,or transferfailurewere occuring.
/ Lever-.\ ,.
4. Installation of the fuserfront paper guide(Front frame side)The lowerside of the screw (frontframe side) mustbe justoverthethird line ma~ed on the fuser frame.
@Fromtiameside
13-6
- --- . ...
““’”’’-’*’-- ‘“-”-’’’”-”’”-: “’ ‘“ ‘“”’ ‘“-’
.... . ... : ....,-..1....- -.: .......4 -.,-..1 . . . . . . . . . . . . . . . . ..... ...., -L--. _.-..ti 4.4~. -a. x-.-.,,---.. -e-.-u----- -----
SF-7700.SF-77W
[14] OTHERS
1. Ofiginalsize &naor Mju_t (SF-~W o.n~) ~~i~ size sensor adjustmentis ~ired @ any of the ti~ngreasons:● Afterre~~ ~’ofh orfgindsize sensor-.. After in~li~ the SADF (SF-).. “Afterrsplammenf of the originalsize sensor refl~r.. After re~~menf of the main PWS.. After @aament of an IC (RAM, 1~). ~in the main PWS.. When ti troublestatus U2 is di@eyed.● After r+a~ t & -rfertta *in W o~nd *8 m
WE.@ CleantheIght emting etient, lgM
*W.ting element,and the
—-t .:: I
.-J
. .. .. - .-, . --
- -- . .T* *1= ...
\— t [~ \ ‘ ‘1
—
---
!— . —..—.—--——I I ! L
I I !1,
r -- - - --- --- ---- . . . . . . . ..
}U.. .. . . . . . . . . . . . . ... . . . . . . . . . . . . ..
( 1
.\ -CHMsensorarea
Manged. .,
.@.
*
.. --------------
A-.. . . . .
(~ample-1)
MRCV (IW-99 ) X 1~ = 1[%]=—100 I
(tipy A)s~er thanmtualsize
W (otigind)
(&l*2)
{0 MRCV=( 1ml;;ol)X 100=-1[
(*Y B)
_ thanamd S28
NO=: Calmlate MRCP b- on originalsize of IOOmm.@ Enter test oommand49 then the ready indbtor turnson and a
numberwill appear in the quantitydisplay.~is numkr isthe mm?ntvdue storedinmernoryfartranave-magnti~n).Use the fallowing formula to -ate the new value for t-Qmmand 49.New value = (Curren~ stared value) + (MRCV x 10)Enter this new value and press the print swit~ verify thernagn~~tian by repeatingstep @.(Exsrn@e)If the previously set figure is 50, entry for Examplel andExample-2 at@ will be as follows:● Example-1: M = 50 + (1 x 10)● aampl*2: 40 = 50 + (–1 x 10)When the PRINT switchis depressedafter ~tering the number,it is stored in.mernoryand the ready indioatorturns off.
@ Can=l test ~mmand 49, by pressingthe dear key.
SF–77WSF-77W
3. ~velopingbiasv~~’ adju~mDev~hg bias -ge adjustment is required fti any offd’ting reaaans:● After@~ t of the ~ -e unit.@ Set the digitd v~meter to ~VDC ranae or above.
the
@ Enter teat oamm~ 8. The Mae_ is au~ied for aboutW saoonds.Ad~st the _ to -WV with the bias -Sd@atingpot.
4. m * supplyo- vo~~B, +24~ adjus~eti
Adjustnrentis reqtired for ~ of the -~ reasons:. After ~~menf of a @ withinW W pawer su~ unt.. After m~l~ of the adjustingpot.@ Conneotdigti vaftmeterprobes be- pin 7 ~2) andpin
14(GND) of the .mn_ CN702.@ Turn poweran with them door open.@ Adjustthepat(VR701)sathat24.5 *0.2VshouM baobtainad.
Ctookwiaeturnof the potinareasesva~ andoount~iaaturn d~ases v-.
Rn 7 (VW)
\
/Pin14(GND)
kVBadj- pot(VR701)
h
Mnm@urati
1 GND4 DSW
; 7 VB29 GND
Q.10 M
o :: :D
- -. .- .- ,..14-2
SF-77WSF-77W
5.Major parts repl~ nt for me ckner don
f
Diti~lwNOTE: Spreadashsetof paperurrderthedeaner~ . toprevent
tone~from droppinginto the madine.
/
./
\yL Toner transport guide assy (tonermive sheet)@ Remove the dwm and the desning blade.
A
@ Remove the separator psti, paper sewa~ ~, @ mtoothed heal unit.
,// >~\ ,~’
A
Tti - unit )~
‘ \@
/’ :/’
:,7 ~ *W** ; ~“ ‘“’ !,y~’
\+ ., . . ;
@ Renrovethe~sti removethetonertransportguideaeay.
,..
$::,,t-.. ..... . ‘*j
B. ~m ~al and cleaningseal@ Remove the drum and the cleaningblade.@ Re~ve the toner trsnspofiguide =y.@ Qemove the di=harge lamp..
b. Drumsad FBond the drum seal F in ~ to A end C.
@(-) ‘
(Rear frame side).a. Cleaner sad
Send the desner ~ in ref~ to A and B.b. Dtim seal R
~ the drum seal R in ref~ to A and C.
-q m
. FWARe-linee 11
14-3
. . .}
. .. ....,..-.--= , ,>-..=- .
. ... ,. - .. ., ..
6.CLC PWBadjustmentCLC PWB adjustmentis r~uired for any of the follotirtg reasons:. After replacementof an IC (RAM IC3) withinthe main PWB.. After replacementof the CLC PWB.. Afler replacementof the CLC ‘PWB component.● After replacementof the main PWB.
(Adjustmentpmedurs)@ Apply the AC voltmeterto the wall outlet to whichthe apier is
connected.@‘Execute test command92.
c + P -0 + P + 3+ @j + PswThe supplyvoltage is then displayedin the displaywindow.
Onwhenh su~ Wage is ~ to~VAC.,
IONwhenthesupplyvottageis 1000 199VAC
I kDisplsys&es andt s ofthesupplyvottsgeII I detmedbvtheCPU
.11x17 LEXTR~\●8xxM m
● Ssxrru ~● 8%x5% WR
. a%xn~ ‘w’
1-(a):When the manu~ fed Imp is ON wi~ ’05° in tie mul~~vwindow,the supplyvoltage detected by the CPU is 105VAC~~
@ Adjust by means of VRI of the CLC PWB so that the vottageon the voltmeter should be the same as the supply vohgeshown in the multicopy window. me CPU is not directlymonitoringthe supplyvobge, but the,supplyvoltageis rectifiedto DC level within the CLC PWB to monitorit. Therefore, thevoltage varies when VR1 is mmipulated.)
VRl—
CLCMB
@ Push the CLEAR key to cancel test command92.
7.Installationof the originalsize sensorPWBmeoriginatsize detect PWB shoutdbe in~tlad on the u~r sideof opticatunit frame. Do not atlowthe board edge to extent abovethe optical unit frame.
CAUnON:- ~ 00 notdti meboerdqe to
m--- ‘me ~extendabovetheopti unti
tieme
P
.-..-,: ..-. -.... ...“’
SF–77~SF–775O
8. Cleaningthe paperseparationsensorThepaperseparationssnsormustbsASnsdsv~~,000mpias.@ Open the frames.@ Remove the paper sepsrattortsensor.
.\
1
@ Ctean the su~ of - paper separationsensor LED and thephOt0ben9etorusingthe dr -r.
@ Reptam the paper asparadonsensorback in the unit.NOTE: Do not attowthe paper separationsensorcoverto me in
-~ with the OPC drum.
\ I
A?-~wCPCdrum ‘*;
i———
0
/1 I
g. ~ration sensoradjustmentThepaper ssparati sensorad-t is ~uirsd for any of thefottowingreasona:● Afierrepfacsrn~ntofthapapar~~ti SS~r~ itSComponent.. Afier raptacementof the paper aeparati sensorcon~l PwB or
its component.@ Clean the sutia~ of the aaparati ssnsor LED and the
phototransistorwith the air btower.@ Open the frontpatret.@ Removethewashsr_ abovethewtitetoneroollectboffle.
,,
14-4--- -- ..-=.
SF-7700SF–7750
@ Insert a ~rewdnver throughthe hok (two ~ s) end turnthe paper separation sensor mntrol PWB potentiometer VR1and VR2 ful~ oourrter-iaa (arrowheadA). .
@ Turn the power on.@ With the doorawitch(DS~ open (0~, ex~ute test oommand
25.vest oommand25 paure)c + P + 0- P + @ + @ + psw
@ Manudiy aduate the doorewitch(PS~.@ Sldy turn VR2 d-se (mwhead B) and stop it when the
MISFEED Imtion indiator lamp (separationunit) flickers.
@ Fully rotate VR1 ~Mse (arrowheadB) and make sure thatthe MISFEED Iooationindiator iamp(separationuti)goes out.
10. Pr~Mions@ Donot open the_ unit at the same time with the pr~
Unti.If if ia opened at the ~me ti~, dist~on is ~u~ in tieframe end if may resuhin image dietortion”(tis deviation,etc.)end irregularnoise generation.
x@ Asa differenttransferguidetensionspringisusedbetweenthe
front frame and the rear frame, the one on the frontframe sideis SWer and the other one on the rear frame side is blti.Inetaflationof the springin the wrong btion may reeunin enimage diatotion and a transferfailure.
@ Before unfasteningthe mnn-or ~tween the opticalunk.andthe prwees unit, the power must be fumed off.
,’14–5
.__—
~ Cautionson ins@lingthe OK drumDo the fol~ng after itiling new O= dmm or applyingthestartingpowderover the O= drum surfam.Press C + P + O + P + ~ + @ + PSW to exwute testremand 25. As the drum eeverd revolutions.This is to prevent impmper oper~~n of the peper Sepaationsenior.. c’
11. Pa~r misf~s~s of paper misfeeds@ Misfeed, MS1 does not aduate
. MS1 failed to atiate within2.6 ~ds after the adivationof the upper~tte paper feed solenoid(UPFS).
. MS1 f~i~ to @ate ~hin 1.8 ~~safier ~VatiOn of thelower~aette paper feed ~ienoid (LPFS).
May be a failure in MS1, UPFS, LPFS, takeup dler, obj~ inthe paper path, or use of irregularpaper.
@ Misfeed, MS1 d~,~t ~~m.. MS1 f~led to d-ate within4.3 ~de after @vation of
the paper stop *noid (PSS).May be a failure in PSS, MS1, PS roller, ob~ in the pa~r ,path, or,use of iwegulerpaper.
@ Misfeed, MS3 does not aotuate● MS3 failed to ~ate within3.2 ~s after the a~ation
of the paper stop~tikf (PSS).May be a failure in PSS, PS roikr, MS3, separatorunit,fuser~k(se~ratorpati), objeotinthepeperpati, orfi’sWsition.
@ Misfeed, MS3 does not return. o. MS3 fei~ to de~ate within3.2 s~ds afterthe actuation
of M=.May be a failure in MS3, paper Wivery roller, or MS3 ~yedatiated by the -r trailedge as the lead edge is stoppedbysomething.
@ Manual m~eed-1. MS1 fai~ to -ate within8 mrrds after the a~ation of
MS4.May be a failure in MS1, obetru~n on the paper path (feedroller, alien ob~), or the paper is heu up by ~ur fingertipbefore the paper lead edge raatiee MS1 after ~ating MS4.
@ ManuA miafeed-2. During muhtipy MS4 .atiated within 900ms after the 0
dmation of MSl by them edge of the last paper.Manual feed is not dbwed in the mul~y mode.. Duringsingle~
MS4 ~ated withinSOOrnsafter the deamafion of MS1 bythe trail edge of ,ti ~~r.
@ Paper aught up aroundthe drum surfam. Paper det~ad.~ the dmm sudaoe while the main motor is
in rotation.May be a failure in the r- er tape, mr in the paper feed(paper notmught by the removertape), s~ation det~ error,~ failure in the paper @tfon sensor PWB.
@ At power on or when the door is dosed e. MS1, MS3,or MS4 failed to [email protected] be a failure in MS1, MS3, or MS4, paper remainingwithinthe machine. Ptir MS1, MS3, or MB4 mn~r seating mayalso -use a paper miafeed.(It am as if a paper is in the paperpath.)
(A) The SF-~00~50 r~uires sp@ti maintenanceeve~ @,DDD= lrrew(Cle@AdjWRepia@ asn~
; = Cleanv)
mpies. ● = Luti~teThe followingis a listof basic maintenanceitems. ❑ = Shift~tion
A = Adjustment
Remarks
Partadetiption—
SetUP
40KlteWS~on
1.DeveloperSestion
Drumunit(40K)
SF-770DR)
Heatrdbm(eOK)
(SF-7TOHR)
Cle*dler(40K)
(SF-770RL)SOK
—
Axxx*
Every@l
—AAAA*
—
AoAo—o00
❑coA
A,
*
o000*●
—oAo0x*
o00—AA
s ~veIoper(Black)● DVshieldsheetF(PSEL4217FC~● DV”ahi@dsheetR(PsEL421EFc~). DVsovershaat(UCWW75FC~● DWegeara
. OPCdrum● ToothedW~s Cleaningblade(UCLHOOB9FC~● Paperaeparation~r
A Axxx*
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!.OPCDrumS*
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● U~rbat.ml& (NROLTWgFCq● bwerheatrolkr(NROLIO~FC~● Thermistor● Separafor~k
u~ x4(PmE41eaFc~Lowerx 3(PTME41nFCq
s Lowerheatml~ desningmtk(CROLN055iFml)
● Thmistor cleaning~&(NROLM0372FC~
c Dtivegeara
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AAA
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upperx4Lowerx3
A
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—
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1
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4.PaperFeed-n
5.Dptisswon
● Caaaettetakeupml~c PSml~● PSpertranapom,ti~● Psperfesddmra● *ngdutdr● Dtigesrs
o000*●
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● Di~hsrgelamp● CLhamaaa(DHAl~FCq. Mitien&Copyh@R~~~● MHPsenaor● MirmrbeaadriveWreendpul~s● Mhbaaarai~S@rrg@efe
forMirmrbsseA● AEsensor● LHPwaor(SF77SOon~). Blanklamp
● Msinmmnatires (DWIR~Cq● Trsnsfw@mnaWMS(DWIR_W
o
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9.Others
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● ~~mps(PTPE4122Fc~● ~ratin roller● Subaaparathnroller● Transfergukteand-● Trarrsportguide
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c@onefi~(PFIUOl 14FC~(PFIUOlOeFC~
. Waatetonermllaborne(CYOKW16FC02)
. Gears● .~ment g~~, ~~t ~~
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16-1~.,.. ..... -.--=----
SF-7700SF-7750
[16] SELF-DIAGNOSIS AND TEST FUNCTIONS
1. Test command functionsTest functions are used to clarify and pinpoint malfunctionsin-rdanca with the status codes and to manipulateo~ratiorts inthe machine by entering an appropriatetest mmmand. The statuscode can be checked, changed, or Mncelled by the test commandfunction.inaddition,variouschd~utfu~ions may~~~o~.
‘ (1) Aduation of the test commandfundions@ DepressCLEAR, PAUSE, ZERO, and PAUSE keysinthatorder.
AJl of the indicators (except copy rati indicator, automaticexposure copy dens~” indi~tor) on the operationpand will goout, and the machine will be ready to acce~ test commands.If you do not ~plete the entedngof CLEAR, PAUSE, ZERO,and PAUSE keys with in 5 -rrds, the copier will not go intothe test tie. You will have to performthe commanden~ dlover again.
@ Programthe test command by enteringthe twodigit commandcode. AJthoughany numberof digitscan be entered throughthekeyboard,ort~ the last two digitsare effective.
@ Depressionof the PSW after the twodigitent~, enableatheteetprogramas defined by the key entry.
@ To change the command, press the PAUSE key. The testprogramunderexecutm is terminatedand all of the frontpanelindicatorswillgo out.The controlreturnsto Step (2) and is readyfor a new errt~.
@ To terminatethe testoperationpressthe CLEAR key. Thaqierwill returnto the operationalmode.NOTE:. Depression of the PAUSE key will discontinue the test
operationfor the test commandslisted be~:01, 02, 03, 04, 05, 06, 07, OS,09, 10, 12, 16, 18, 19, 20, 25,26, 27, 30, 31, 32,40, 41, 42, 43, 44,46, 47,46, 49, 50, 56,60, 61, 70, 75, 77, 78, 79
● Any operationlistedbelowwill di~ntinue test progr~’, 21,22, 23, or 24.1. Power sw~ off.2. Press CLEAR+ PAUSE+ O+ PAUSE+ CLEAR
. Test commands13 and 14.Test ~mmand, 13 and 14, are used to clear the contentsofthe selfdiagnosis (Ul, H3, H4) memorystoredin the LSl, theprogram will dear automaticaJiyupon the comple~ of thetest programs13 or 14.Afterthis,the machinewillgototheordirtaryoperationalmode.
. Test command72 isautomawily tied afterthe executionof the test command72.
16-1
(Within JP~strCLEAR kW I
] Within
I ,- --front?
I an appro~iate + -------~mt oommsndJ-- ----- w k-------
*r ------ TI Tmt to tiartl~ --------- PU* Psw. F----A---- - --A
“ .QServia engineerperform ~tionspsrtialar to theteatcommend-~.
-----~Tmt to 1?---- ----- puti CLEAR kW~terminate j-----
Mdine ~m
.
6“
.. .-- ----77 ---.?.. ---- ... .
. . .
SF–77WSF-77a
(2)Tyxs of test commandsand their fundlons
●
f6-2-. ,------. ?-..... .
......~=m . . . . . .
SFZ7750
10
12
13
14
16
19
20
21
22
23
24
25
26
(SF-~50 onfy)
Fution
THVGis turnedon for 30 ~nds.his test@remend,dloweMing oftftetin W vohweorProperfutioni~ ofti mVG, endWD ad~wt.
Dieohaqelampandblanklampturnonfor30 eeoonde.me Nmk Imp d theSF-n50 turnsononeat a timetim bO~S-.)
UsedtoWd thestatusde U1.
Usedtomd tie statusd H3or H4.
r I
Ueedto- the*ine’e totefw -iWll bediepfayedintftesamemanneras (16)above.
Usedto resetb tintenm muntertozeroafterthemmpfafbnofmstiinemeintene-.Thistest-mend mustbeexti 8* m~etion of -ne meintenem.
Q;timy5to t+ ~ 21, theWerm+ptimeisomittedandthe- mw data funotionandpapermisfeed~. me heaterlampdoesnotturnon.)
1.usedto @ thetonersensorw.2. usedto cm ~ of Stirotatingparts.Wti thistest~and, tftemainmotorandthedevebpingbias~rrtsonfor3 tinutee. Ifh tonersensor* Iti b tooh, tie TPL~ [email protected]. UaedtoSd@at- aaparationaeneor.
mm...../
**‘L~\Dev~r mbr indietion
Bfk M BlueBrwnGmo x o x o
x Ooxxxxx 00
O: ON X: OFF
16-3
.. ... .. ..—....—--_-.-.-,
..
SF-77mSF-77W
Testmmmend
27
,(SF-~W on~)
w
31
32
41
42
42
44
46
(As sense) (la series)
w - XO.W - .0.s1 - .o:m- xt.4i - .tz - .l,ls-- xo.SS _ .o.nq x&W_ x1.41 _ Xl=+ X121
Woff ation oftheSF- SDFoanW d-.(Sensorsonthe@@ path)
I
(SDFo@in~ sizesemr)Rear
Ueedforoperafiond- ofh SF- SADF(@rig ~).Operationisparmiffedwtthoufusingantiginef.
1. Mainmotor,WG, ~VG, D~ BLendd-rig MaeerammedM for5 minutes.2. If thetoner~ - bel istoobw, W mL turnsm.3. Davdoper~ itiisetoris,di~a~.
Usedtosetuptie SADFmind feed,path,andexit~ Iavafe.
Usedto setuprotafiWs- of theSADFdooumentfeedroller(DFMrotatingspeed)to ayrmhronize~th me_ ofthe~d~ (DTMrotatingspeed).
C- thetmrrepofiunitandex~te tfteteatamand. Theoriginalfeedmfb rotatesfora few~ endthe~UMENTFEEDREADYgreenlampm theSADFindtitor pe~ fltiera a few~. W mta~ “speedoftheOrigi- feeddler isstoredintie memorytommnize witfTmeq kit.
Usedtoadjustthe~ d- sndto~m vtide ~ _ @~. ~Formoredetails.referto Paragrapp[4]COWqud~ ed~etment.
—.-. ,,
16-4
“ ~.. .- . . . .
.. . -——-------‘9SF-7700SF-7750
Teat~ ~ Fution
47 Whentestwmm~ 47 isextied, themiw beesmovesandthe~ lampdrivingvottega-be eatWn a rangeof55V(110wtoBOV(190winmi~ of5Ve&, and,theAE~-~~ e~~-qetied duringwying d a tiife origiti (W lampint~) is storedinthemainPWSRN. The~ densityad~ent(teatremend 4) h mrxt~ed ~ the-s ofthese~riatioa.Formpredetails,referto Paragraph[4]~ w#ify ad-.
4s Usedto adjustthemegnfioafionratioin~ ~Wditi dim ofthesopy.(SF-~SOonly) Bytiangingthelenshome@tioq inthenormalmode,themagfifi-ti~ ratiointhe~ d-of the~ (-ss
thefrontandrearkameMes) ~ be ad~sted.mthod:~ Pta~ a de ~ bothtiameaidesoftheoriginal* ~ m~e a ~ inthen- modetoobtainttremagnifi-tion
raw ~mpensationvalue.MagnM-tionratio-peneation value= (originalsize- ~ imagesize)~ ,W%
(@inal Qze)@ Exwuteteatoommend46.
Asthereadylampturnson,the-sly storedfigure(1 to99) isdieptayed.Changsti numberM themsgnifimtionratiommpeneationvatueMAM at~.(Inpuffigure)= (~ou~ storedffgure)+ (megnifitionrati _ eetionVetue[%]) x 10WhenthePRiNTtitiispushed afteren~ofanmmure, thefigureisatoredrnthememoryandthereadylampgoeaout.
49 Usedto ad~ themag-ti~ rsb in thetrenavereetdi*of me~.Bychangingffremirrorbeesmovingspeed,themegni~ ~ inthe(sGn50 on~) di ~ dim ofthe~ (paper~ating
Method:@ Pteoea~einthepepSrtr~l~ ‘ andtie awy inW _ modetowtimagrtm m~~tion
Vetue.
~n~ti * ~tion due = (w inatsize-(*W *Y ‘- e ‘e) x 100%
@ Ex-te teat-mend 49.Asthereadylampturnson,the-sly et- @re (1 to99) isd~ayed. ~ange thisnumber* themagntitionratio-peneation value~ at@. .- —(Input@ure)= (prevWs&storedfigure)+ (megn_ rem ~-V* [%]) x.10WhenthePRINTtitiisWshed Sfterentrydawfigum, hwum isetoredintheMemorysndmsreedy,lempgoeetit.
50 Usedtoa~uatie ~ bad edgeimage~.
(SF-7750) w:Keyoperati: C - P + O+ P + 5 + O+ PSW+ ❑ 0 + PSW(a ~ is~)D ❑: Numberto be entered(P*a)+ P + ❑ 0 + PSW(a ~ ism)U 0: Numberto be entered(P*)
Bet- PSC-asndPSC-btoO.*eone~inthaentarge (xl.41) andthe-(xO.B4)ti.-re*~fromthesopyleadedgeimageareatothe- edgeotthe- paper.L1 = .~ fromthe~ bed edgetothe~ image~ edgeinthe_ mode(X1.41).~ = D’~ fromthepaperteededgetothe~ imageW edgeinthe~ mods(xO.S4).
Obtainmevatueof P*a endPSC4 u- thefot~ng formutae.P~-a = 11.91x (Ll – w) (~.- JoP=* . (16.95x U) - ~.~ x Ll] (- rounded) z% (Is(
(6o = ~~2+
c?... .. . . . . . . .. . . . . . .. . .. ... . . . .. . .. ... . .. . . . . . . . . . . .. .. . .. . . .. .. .. .. . . .. .. . . .. . .. .. . . .. .. .. . .. .. .. . . . .. . .. . . .. . .. .. .. . . .. .. . .. . .. . .. . .. ..... .. . ..........................
(SF-7700) Mew:Keyoperation:C ~ P ~ O+ P + 5 e O+ PEW~ 00 + PSW(a sopyia ~)❑ ❑ : (numberto be entered)mange meparameterto~ain W leadedgeimage- ares* O* 0.5mm.
.. ... .. .. . . . .. . . .. . . . . . ... . . .. . . . .. .. . . . .. . . . . . . . .. . . . . .. . .. . . .. . . .. . .. .. . .. . .. . .. . .. . . . .. . .. . .. .. . . .. . . .. .. . . . . .. . .. . .. .. . .. .. . . .. . .... ... ............................
NOE: This- maynotbeenti unk ~ ~isr b inthereedystab.Teat~end 59 mustbe exmed afterex~tion of teat~merrd ~.
5s Usedtoadiustthew ked edge* area.Vti &a Iimks:Oto3mm,-:Keyopera*:C~P+O-P- 5-a~ Psw~oo-Psw(nOrMd ~ radoofxl.Oie~time-4 tied Mum ia@eyed) -00 (numberto beentered). PSW(a sopyis ~)(Num- to be entered)Changethenum= untiltheleadedgevoidarea-es *in Iim&.A differm inthefigureby“1”_ theti erasby~ O.~m.
16-5
11-2 ““””“’ . ..
——-—-—---- .’ ,. .
SF–77WsF–77m
Testmrnrnand
60(SF-77Won~)
61
70
75
[RCH1 M1OOrnGINA9~ MTE -
t lampsturnson CH211X7 (M)
hareh noorigin~ 8%x* (Mu)IWthe@in# ~W CH3 wxilQ (MO)m anddoesnot
CH4 8%X5X(w)n on it there is. Wl~F 8%xfla(s50)
0. r(-)
/
I
J UsedtoCM me- of6reMar papertran~, tin operating~.Enterme fofting mmmand:C-P+P-GI-PSW [Pressme r~tive key]Kayentry1:Sorterpaper~ansportmotor(S~) rotates.KW~ 2: Sortertin operatingmotor(STM)rotates.(am sh~ up)Keyen~ 3: War tin ~atiq motor(SW) rotates.(Sinsshti -)KeyentryO:Cfaartheati -1 to3.
Usedto~ me SADFtow -mant faadnumk.Displayissimilarasteat~ 16.
Lans ti-vefatir Lens ~fa~ iaxnumbr .” ~astamand num~ m@mmand
77presatvafue) s =~and77praaetvafue) 7Tprasatvdue)
-4.5 1 -1.5 7 +1.s 13
t..- 1 I I 1 1
-A 2 -1 8 +2 +4 1
I -3.5 131 -0.5 191 +2.5 I 15 I
-3 4 0 10 +3 16
-2.5 5 +0.5 11. +3.5 17
-2 6 +1 12 +4 16
16-6
—
-i&”’:yfi”’:;:+’;:i>’’i-’’-”:””””-”---’”’’’-’-”“;”SF-7700SF–7750
16–7
‘()
.’
b
.-.
SF-77WSF-77m
I Testmmmand
I 92
F@on
@ Usedto_ theACpowersum vofrage.@ Usedtoadjusth ~ lampmntd ~.
C-P-GP-%2-PSWWiththis,theACpowersupptyvokagetided byWeCPUisdi@ayad.
OnwhentheCPU~kad voltageis200to 299VAC.
OnwhentheCPUdr~sd voltageis 100to IWVAC.
Theonas~ tensvaluesoftheCPUdteoksdv~age isd~yed.
(aam*)Whanthemanudfsad lampisONandthe%num&5 i~WfiiE~ay,-CPU~ ~ vottagaisefIWVAC1
●
isalfdegnostb function
,
NOTE:?ha door- mustbedosedwhenteatwmantts, 1, 6, 7, 8, 9, 10, 12,22, 23, 24, 25, 26, 27, 32, 46, 47, 60, 66, 92 areex-ted.If thedmrewkchisopen,thetestremand willnotbeex~utad.If thewarmuptimeh to,bedr~sd ~ teatbed- aftertheent~ of theteatamend.
~ 21, the~ must
W devem unit muti be insertedinH _ toenabletestwmmanda21, 22,~, 24, 25, 32.
2. Self-diagnostic functionsWhen the mpiar malfundions, operations are suspendedimmediate~ and a statustie is indi~tad onthe multi~py display.Status ties are represented as an alphanumeric@mbinationoffigures.
(1) Outline
-+
I @mrrenWof a mhine failure
bIndiationof the mdfuntiionpoint on the dispfeywindow
#
●r- Stetuscodaad in the memory I I Powerturnedoff 1I
Stopsthe bitts opsetiorr
I1’I
-1+’
Saw@ MII ismade
I (user’smtion)I1 Po-r turnedOn1’ _ ~fiw Wchnkien shouti makerha
L--”_---_---:----------eFix the problembv findingthe
b
[ Completionof toub~hooting II
Imn~l me statuscodsstool inthe memory. I-a
SSM- ~11with ~aasery sarvimpartson thebasisof the troubtaSmtus~ bv the user.
Wn oneoftheteat statue-es Ll, M, L5,M, H2,or U,U3,Lf4isi_ted, itmaybs~ared bytumirrgthe~off.WhenStStUSU1 h -tad, it maybedearer.bytsarremand 13.~ atatus.- CHis indtitsd, itmaybedeersdautomati~ upon-#etion oftrou~ting, -tanttinga teat*mand.Whtietafus~H30rH4 isirtditiatf,itmaybsdearadbytestamend 14.
16-8