f.-r · (3o to 17,q)0 hz 13 db) (0 db recording; 30 to 12,5o0 hzl more than 50 db b type more than...

STEREO CASSETTE TAPE DECK

(D rrloNEEFl'

ORDER NO.ART- 678-O

9. SCHEMATIC DIAGRAM 21

10. PARTS LIST . 24

1 1 . M E C H A N I C A L A D J U S T M E N T S . . . . . . 2 7a l

R E G L A G E S M E C A N I O U E S . . . . 2 9t

A J U S T E S M E C A N I C O S . . . . . 3 112. ELECTRICAL ADJUSTMENTS 33

a t

R E G L A G E S E L E C T R I O U E S . . . 3 7,

A J U S T E S E L E C T R T C O S . . . . . . . . . . . 4 . 1

I

I

CONTENTS1 . S P E C T F T C A T T O N S . . . . . . 2

2 . F R O N T P A N E L F A C I L I T I E S . . . . . 3

3 . D I S A S S E M B L Y . . . . . . . . . 4

4 . P A R T S L O C A T I O N . . . . 6

5 . E X P L O D E D V I E W S A N D P A R T S L I S T . . . . . . . . 8

6. PACKING 14

7 . B L O C K D I A G R A M . . . . . . 1 5

8 . P . C . B O A R D C O N N E C T I O N D I A G R A M . . . . . . 1 7

lr rlf.-r

This service manual is applicable to the KU type. For servicing of the other types, please refer to the addi-tional service manual.For the mechanism & circuit descriptions, pleæe refer to the supplement of model CT-5 service manual(ARP-002).Ce manuel d'instruction se refère au mode de réglaç, en français.Este manual de servicio trata del método de ajuste escrito en espaffol.

MODEL CT-5 COMES IN SIX VERSIONS DISTINGUISHED AS FOLLOWS:

Type Volatge Remarks

KU 120V on ly U.S.A. model

KC 120V on l y Canada model

H E 22OY and 24OV (switchable) Europe model

HB 22OY and 240V (switchable) U.K. model

HP 22OV and 240V (switchable) Australia model

D 12OV,22OV and 240V (switchable) General export model

PICINEEF| ELECTF|CINIC CCIFIFOFIATICIN 4-1, MesuFo 't-chome, Mesurc-ku. Tokyo 1s3, Jep€n1J.5. PlCt lEEFl EL.EgfFrcI\laCB OG'FIPC'F|ATIGIN 85 Oxfond Onive, Moonactrre. New Je€ey O7O74. U.S.AIIICINEEFI H.ESfF|CINIC (EUFICTPEI N.V. LuiÈh€gen-Hêven 9, 2O3O Antwenp. BelgiumFfCINEEFI ELEgfFrclNlCA AUBTF|ALIA FÎY. L1E. 178-1EJ4 E}oundary F|oad, Ê|neesrde, VEÈonia 3195, AusEnalE

Y P @ M A Y 1 9 8 I Printed in lapan

1. SPECtFtCAT|ONS

Wow and Flut ter No more than O.05% (WRMS)Frequency Response -20 dB recording:

Normaf , LH tap€s 20 to Î5,OOO Hz

Specifications

SystemsM o t o r . . . . . . :Heads

Fæt W ind ing T ime

Chromium dioxide tape

Metal tape

Signal-to-Noise RatioDo lby NR OFF . .Dolby NR ON

compact cassette, 2.channel stereoDC servo motor x 1"Hard Permallay" recording/play-back head x 1"Ferrite" Erasing head x 1Approximately lOO æconds (C€0tape)

(30 to 14,000 Hz 13 dBl20 to 17,OOO Hz(30 to 16,000 Hz !3 dBl(0 dB recording; 30 to 8,0OO Hz)20 to |8.OOO Hz(3O to 17,q)0 Hz 13 dB)(0 dB recording; 30 to 12,5O0 Hzl

More than 50 dBB Type more than 68 dBC Type more than 78 dB(over 5 kHz)

MiscellaneousPower RequirementsPowerConsumpt ion . . . . . .Dimensions

Weight (wi thout pækage)

Furnished PartsConnect ion cord wi th

pin p lugsOperating instructions

AC 120V 60 Hz23 watts420 (Wl x 99.5 (Hl x16-9 /16 (w) x 3 -1 5 /1{ D } i n .4 .5 kg (9 lb 15 oz l

(D ) mmx 9-9/16

TT6 or

2 ) o r

( 1 6 0

ton

21

Harmonic Distonion No more than 1.2% (0 dB)I npu t (Sensi t iv i ty /Maximum al lowable input / lmpedance)

M IC (L , R ) . . . 0 . 3 mV /57 mV/10 ka ,6 mmdiam. iack(Reterence MIC impedance;25O nto 1O kO)

L INE ( lNPUT l x2 . . . . 50 mY/22Y11C0 ks l , p i n j ackOutput (Reference level /Maximum level /Load impedancel

L I N E ( O U T P U T ) x 2 . . . . 4 5 0 m V / 5 0 k O , P i n j a c kHeadphones . . . . . 65mV/160mV/8O,6mmd iam. j ack

Subfunctionso MS (Music Selectl systemo REC mut ing swi tcho Dolby NR B & C system (B & C, ON/OFF) wi th LED indicarer

tamo

o LED peak metero ALC (Aulo mat ic level contro l )o One touch recording system. Stand-by mechanism with unattended recording. Auto tape seleclor . (NORM/CrO, /METAL). Ful l automat ic stoD mechanism

. No ise Beduc l ion Sys tem manufac tured under l i cense f romDolby Labora tor ies L icens ing Corpora t ron

. " D o l b y " a n d t h e d o u b l e - D Q Q s y m b o l a r e t r a d e m a r k s o fDo lby Labora lo r ies L icens ing Corpora t ion

Note:Specifications and the design subiect to possiblewithout notice due to improvemen$.

NOTES:1. Reference Tapes: Normal & LH: DIN 4551

equ lv.CrO, DtN 45S13/BLATTeoulv.

2. Reference Recording Level : Meter OdB inwb/m magnetic level = Philips cassette referenceReference Signal : 333 HzWow & Flur ter : o JIS [ 3 kHz, wi th accust ic(weighted) rms valuel DIN [3,150 Hz, wi thpensat ion (weighted) PEAK valuel ; DIN 45507Frequency Response: r Measured at -20 dBNR OFF, level deviat ion is 16 dB wi thoutSignal to Noise Rat io: o Measured at the th i rdtor t ion 3% level , weighted (DlN 45513/BLATT7l .Sensi t iv i ty : Input level (mVl required forlevel wi th input (REC! contro ls set to maximum.Maximum Allowable Input: While decreasing se(REC) level contro ls and increæing level atis the maximum input level (mV) at the oointamplifier output waveform becomes clipped.Reference Output Level: Playback outputindicaæs 0 dB.

3.4 .

5 .

7 .

8 .

com-

D O L B Y

dis-

Inpu tth is

9.

é

2.FRONT PANEL FACILITIESOPERATION

AUTO TAPE SELECTORindicator

indicator

POWER indicalo l

D O L B Y N RB/C type indicator

(! POWER switchPush th is swi tch to turn on or turn of f oower. When swi tch isdepressed power is supplied and POWER indicator lights. Whenswitch is released oower is turned of{ and POWER indicalor isext inguished.

@ e.leCf button and cassette holderThe casset te taoe is housed in th is holder '

To opsn the holdor: Dopres th. EJECT button.To closa th€ holdeT: Pu*t the holdr by hand.

@ r"æ COUNTER/RESET switchThe tape counter indicates the tape's traveling position. Depressthe RESET swilch before recording or playback 10 reset thecounter to "000".

@ tsvEL meterThese indicate the input or output level dur ing recording orplayback.

@ Playback funqtion switchesPlayback operations can be performed when the sections withthe fo l lowing symbols are depressed:

>) ( fast forwardl :The tepe runs at h igh speed f rom lef tto r ight .

a{ (rewind); The lape runs at high speed from right10 lef t .

> (p lay) : The tape is p layed.

r (nop| : The tape is stopped.

@ Recording function switchesFlecording operations can be performed when the switcheswith the fo l lowing symbols are depresses:

PAUSE:

R E C :REC MUTE:

The tape t ravel (dur ing recording) canbe temporar i ly suspended (recordingstandby mode). Depress this swilchagain to resume recording.

Recording can be star ted.This enables unrecorded blanks 10 becreated between programs for conven-ient p lay funct ions (Music Search).

t The word "Oolby" and 0g are t rL icensing Corporat ion

@ uustc sEARCH switchSet to ON when automat ical lvNormal ly, th is swi tch is kept at the

@ trueUf level controlsTheæ are used to adiust the inputwi th the ALC switch at rhe OFFcontrols are l inked and rotatenel and outs ide r ight channel contro ls

@ eLC switchWhen th is is set to the ON posi t ion,recording is adiusted automat ical ly .hard to adiust the recording level orrecorded in a hurry.

@ tvttc lactsInsert the microphone pluç (L andrecording wi th microphones.

@ oor-ay'ruR oN/oFF switcfiDepress th is to the ON posi t ionback a tape wi th the Dolbv nois€

@ oolav NR B/c type 3elestorDepress this to select type B or

@ exorues;acrInsert the plug of the stereo

(The center IB] [C] indicâlors l ight in

@ ruex FILTER switchDepress th is when recording an FMnoise reduct ion system.

6D TIME R start iwitchThis swi tch is operated for uusing the t imer.

or p layback

REC: For automat ical ly recording t ime se t on thet imer.

OFF : Fo r when t he t ime r i s no tset on the timerPLAY: For automat ic p layback at

Oolby Laboratories

start of a program.

I dur ing recording. The lef t and r ightthe inside lef t chan-used separately.

t s ignal level dur ingwhen i t is re lat ivelysomething is to b€

to these iacks when

Dolby

or p laying

NR syslem.

wi th the Dolby

OÊoN€m

t h i s j ack .

4. PARTS LOCATION

Front Panel View

Knob (EJECT)RAC-1 77

BonnetRNA-555

Knob (POWER)RAC-195

Indicator panelRNL.34O

Funct ion knob FRAC-1 75

Front View with Panel Removed

Cassette plateRAH-392

c Parts without part number cannot be supplied.o The $ marh found on some component parts indicates the importance of the

safety factor of the part. Therefore, when replacing, be sure to use parts of identicaldesignation.

o For your Parts Stoch Control, the fast moving items are indicated with the marhs** and *.** GENERALLY MOVES FASTER THAN i.This classification shall be adjusted by each distributor because it depends on modelnumber, temperature, humidity, etc.

Funct ion knob ERAC-176

Knob ERAC-194

Push knob BRAC-I74

Knob ( INPUT RlRAA-364

Knob (MODE)RAA-365

Push knob ERAC-192

Knob DRAC.193

Indicator assemblyRWX.528

I Vo lume ( lNPUTlRCV-O94

Jack assemblyRKN.O75

t l Rotary swi tchRSBO28

I

Funct ion swi tch assembly

3. DISASSEMBLY

Door Assembly Removal

Door assembly

Do not apply unnecessary force to hoohs since this may

Dolby assembly

Hook B

S

panel R pJffi"; panel

+@

Panel R

Indicator panel

I ndicatorFânél Removal

FiS. g-t Disassembly 1

Bonnet RemovalRemove the four screws l).Panel R Removal1. Pull off the INPUT VOLLIME knobs.2. Gently push the hooks A of the panel stay

with the screwdriver

lndicator Panel RemoyalGently push the hooks B of the panel stay withthe small screwdriver.

Escutcheon RemovalGently push the hooks C of the escutcheon.

Door Assembly Removal1. Depress the EJECT button and open the cas-

sette holder.2. Pull up the door assembly and remove it.

Indicator assembly

Mechanism Assembly Removal1,. Remove the counter belt.2. Bemove the six screws @.Dolby Asæmbly RemovalRemove the two screws @.Indicator Assembly RemovalRemove the hooks D and the screw @.Function Switch RemovalRemove the hooks E and the screw @.

Function switch assembly

Panel stay

Fig. 3-2 Disassembly 2

5. EXPLODED VIEWS AND PARTS LISTNOTES:r Ports uithout part number cannot be supplied.. The I morh found on some component parts indicates the

safety factor of the part. Therefore, when replacing, be sure to use ident icaldesignation.

o For your Parts Stoch Control, the fast mouing items are indicated* * and * .* * GENERALLY MOVES FASTERTHAN * .This classification shall be adjusted by each distributor because it denum ber, te mperoture, h umid ity, e tc.

Parts ListMark No. Part No.

of the

marhs

Description Mark No. Part No.

1 . RNA-5552 RYM-122

3. RAH-3924 .5. RBH-897

RAC-177RAW-173RAC-r95RAA-365

BonnetMechanism assemblyCassette plate

Panel stayEject spr ing

Eject p late

Knob (EJECT I

Cou nterKnob (POWER)

Knob (MODE)

R EC-3 76

RDG{22(RDG-o30)

Wire nu tBottom plate

Strain re l iefS€r ia l No plare

AC cord

Main chassis

A,î

tA

J t .

32.3 3 .34.3 5 .

6 .7 .L9 .

1 0 .

36 .3 7 .38 .39.

A * * 40 .

* t 4 1 .42 .43 .444 5 .

46.4 7 .48.49 .50.

5 1 .52.53 .54'55 .

REC-369

RSA448

R E B 4 5 7

Foot assemblySensor assemblyPoraer switch

Counter bel lVo lume

1 1 .12 .1 3 .1 4 .t 5 .

1 6 .1 7 .1 8 .1 9 .20.

RWX-528RNL-341RN L.34ORX8-600

Ind ica lo r assembly

Meter ho lder

Ind ica tor pane l

Door assembly RWX-527 Jack assemblv

26.27 .24.29.

* 3 0

RAC-193

RAC-176RAC-175RAA.364RAA.363RTT.237

21 . RAC.19422. RAC-17423. RAC-19224. RNL-35525. RBH-898

Funct ion swi tch assemblyKnob D

Knob EPush knob BPush knob EPanel RFunc t i on sp r i ng

Funct ion knob EFunct ion knob FKnob ( INPUT R)Knob ( INPUT L lPower t ransformer (1 20V)

RNL.338 Switch escutcheon RWX-550R N L-325RWX-526R KP.297

Dolby assemblyPanel h ingeMotherConnectorConnector

UL cord c lamoe

A

56. VBZ4oPO8oFMC57. VBZ30P080FZK5859. RCG{O660. vcz30F080FMc

RBA{57vcz30P060FMCvcz30P060FzK

ScrewScrewScrew

ScrewScrewR ivetCapaci tor (0.01

Screw

6 1 .62.6 3 .

VBZ30P l40FMC Sc rewVPZ3OP1OOFMC ScrewBCZ3OPOSOFNC Screw

Top View with Bonnet Removed

[ * Power t ransformer (120V)RTT-237

Motor assemblyRXM.O76

[ * Plunger solenoid RRXP-101

Mechanism assemblyRYM.122

l\* Plunger solenoid FRXP.lOO

Rear Panel View

Panel h ingeRN L.325

Te rm ina l ( L INE)RKB-018

Dotby assemblyRWX-550

Strain re l ie lREC-376

A AC cord- RDGO22(RDG-030)

2

r-

ogF-

oA

a.t'

| . a '

z ' l - o

: - l . 'R

97

t

D

o

654r05

52

74

@

53

95

5

2

o6(IU

A

a,ki

D

o1

Botary switchnut and

osill

6

35

4 163%-rr I

@

54

6 l

c

D

I

-X,-.a

4 l

l_I

A

1210

IC603 rC6O7 TC6Or Q4Ol

11

DOLBY AsCy RWX-55OIC611 1C6rO 1612 1609

11

0 5 0 1 I C 5 0 6 I C 6 0 2 I C 6 0 a I C 6 @

V R 4 O I R O I P ?vR4O3 VR4O2

B

o 403,405, 4A7, 503 505,5071 K 3 4 a o r 1 K 6 o a o . o a g o * t { ; q _ |

D

1210

I7

i l R N À

SENSOR Ass'y

--_-+--

DETECTOR

IlÀDICATOR Ass'y

RWX-528

tQ302 2

1 - 9lRs l. {2 .? r {

l i r t ôa

€ i -

3 r n

, r - ?i t

À ' i-À

* ,= |TO

t lr l r , l' r l ^ lv t 0 l

ù ' ' . ' ' 2 ; i l î ' - ' " ' q 3 r a r i . f , c

,Æ rc -___a:#lgT1:j 13 5 Qré 1::ll1! _ :i::i

2 C ? L i o 2

' " t 9

l

:

Q7O1-?06 2SC174OLN or 2SC18t5 152473 or uslo4o

BOARD2

CONNECTIONDIAGRAM

A

I

B

| ) - r

VOLUME Ass'y

FUNCÎON SWITCH Ass'y

Mark No. Pan No, Description Mark No. Part No. Description

101. PMZ20P130FMC102. IMZ20Y120FMC103. PMZ20P120FMC104. YE20FUC105. PMZ26PO60FMC

106. Vs20FBT107. WA17D032DO25108. PMA26PO40FMC109. W421D040D025| 10. R8F-051

ScrewScrewScrewWasher

Screw

Washer

WasherScrewWasherWasher

1 11 . RBF-050 Washer112. PMA26PO40FMC Screw

-

6. PACKINGParts ListMark No. Part No.

1. RHA-2362. RHG-4363. RRB-1 514. RHX-O31s. RHC- l 19

6. RDE-010

PadPacking caseOperating i nstructionsSheet CPolyethylene paper

Connection cord

Parts List

Mark No. Part No. Description Mark No. Part No. Dæcription

9.1 0 .

16 .1 7 .18 .19 .20.

2 1 .22.

* 23.24.25.

26.27.28.

** 29.30.

3 1 .32.33.34.35.

* *

* *

* *

6.7 .8.

1 .2. RBH-8203 .4. RBH-8215. RsN-027

(RSN-0101{RsN-032)

RNK.995RE8.323(RE8-447)RNL.O53RBH.822

Lock leverLock lever spr ing

Side arm L assembly

Eject spring

LBver switch

Side plate L assembly

Qyl inderO r ing

PistonConnection rod

Earth springPocket spring LPocket L assembly

BushPocket L

Guide ro l ler

a*BNL.O47RBH.727RXP.lOORBH.122

RNLOsl

RE8.446RXB-376

RBH.724RBH.725RXB-374RXB.378

REB.187RNK.998RXB-377FNK-999RX8-360

RNLO59RXB-54IRBH-744RXM{76

56.57 .

** 58.59.60.

6 1 .62.63.64.65 .

*

* ** ** *

Solenoid bracket LSolenoid armBrake spr ingPlunger solenoid F

Gear lever spring

Gear lever

Solenoid bracket R

Drive beltDr ive arm fu l l assembly

ldler pressure springFR spr ingldler arm assemblyReel base assemblv

Brake plate

Brake shoeldler gear

Supply reel base assemblyTU id ler

TU reel base assembly

Cam gear

Lever assemblyLever springMotor assembly

Motor

Motor pulley

Flywheel holderThrust receptacleFlywheel assemblyCapstan belt

Flywheel spring

PMS solenoidDoor stopper

Side plate R assembly

Connection plate

Detector assemblY

Slide switchMount plate

Side arm R assemblYEject lever

Stopper lever

Stopper collar

WasherScrewScrew

ScrewScrewScrewWasherScrew

1 1 . R B H - 7 9 512. RNL-05713. RX8-40514.1 5 .

RNK.994

RAH-392 Câssette plate

66.67 .68.69.70 .

7 1 .72.73 .74 .75.RXB€OO

RXP.Og2

FNF-895RBH.778RNL.O42RE8.457RNH.O31

RBH.819

RXB.359RBH-779

41. BNLO5042. FPB-09143. BBH-72344. RX8-49545. RBH-760

46.47 . RBH-81848. RNL{4949. RNL{5850. RXP-101

Pocket frameDoor assemblyPlunger solenoid P

REC prevent lever

Chassis assemblY

Half springSpringHalf receptacle

Counter belt

Spacer

Chrome detector le\rer

Chrome detector sPring

Head base

Bearing holder assemblY

Head base spring

Sub head base

REC/PB head

Head adiust sPring

Pinch arm assemblY

Pinch pressure sPring

Metal detector lever

Metal detector sPring

Pocket R

Pocket spring R

Plunger solenoid R

76.77 .78.79.

** 80.

8 1 .* 82.

83.u.85.

86.87.88.89.90.

FXB.SOORE841 1

RBH.721RXP€99REB.241

RSH-O59

91 .92. RLB-39093. YE3OFUC94. PMZ26PO80FMC9s. vcz26P060FMC

96. VCZ26PO90FMC97. ATZ'26PO60FZC98. PMZ26P030FMC99. YE4OFUC

100. PCZ26P060FMC

3 6 . . ' . . . . . .37. Shaft stoPPer

38. MS Plate

39. RBH'794 Head base drive sPring

i 40. RPB-096 Erase head

A*

NR SYSTEM

S3O3 C TYPE

8 T Y

I C 6 0 r ( H A i l ? 2 6 )

M E T A L : 2 6 . 9 m V IC r O , : 1 9 g m v

N O R M : 1 8 . 2 m V

FROM TAP€SELE C TOR

TO REC/PBHEAO

REC EO AMP

0 r09

I C 6 0 9 ( t / 4 )P . B

o 4 0 l

Ç

N CY Y

r- ___lLINE MUTE

METER ORIVE

R L : 5 0 k n

I€AOPHONE AMP

c @8 @

RL:8 I l

R c hHEAOPHCIIE

tTO OOLBY_C SW

6ro(6 /6)

ro 00L8Y swro ruro lEWu JcoNrRoL @

tc 6ro(5/6)

Q 3 0 l

808LEOa

i)L E D A O '

( B T Y P E )S W I T C H E S

S 30I : MPX F ILTERS 3 0 2 : O O L E Y N Rs 3 0 3 : o o L E Y N RS 3 0 4 : T I M E RS 7 0 1 : A L C

O N _ O F Foi l - oFF

T Y P E A _ T Y P E CR E C - O F F - P L A Y

O N - O F Fs 702 i |NPUT SELECTOR L |NE - H lcS 7 0 3 : I N P U T S E L E C T O R L I N E - M I Cs 9 0 r . F FS 9O2 : REws 9 0 3 : s T o PS 9O4 .PLAY

S905 : PAUSES 9 0 6 : R Ê CS 9 O 7 ; R E C M U T ES g O 8 : M S O N - O F FS I 2 O I : E R Â S E P R E V E N T O E T € C T O R

H O L E - N O H O L Es r 3 0 r : P o w E R o N - o F FS I 4 O I : T A P E S E L E C T P R c ' O r - M E T â LS I 4 O 2 : T A P E S E L E C T O R N O R M _ H I G I I

F R E O U N C Y : 3 3 3 H 2

R E C L E V E L : 1 6 0 P W 8 , / M M

O N _ O F F

O N - O F FO N - O F FO N _ O F FO N _ O F F

O N - O F F

O N - O F F

8 3

B 4

ac 120v60 H r

R E C M U T E

POWER SUPPLY

s t 3 0 l

7. BLOCK DIAGRAM

F R O M F I E C A M P( B I A S T R A P I

LINEINPUÎ o'j olloi*

MPXFILTER

rnou xeaoexou@vR roolINPUT

AIJTO LEVEL CONTROL

olot( REC +ON'

o3l I(REC + ONI

sws304 R E C

oofr

1:*

s902REW

,ls90l

:J LINEr - - - - :7

,z/

-Jzoz

1*'mtc amp I

l--agoe----i

FLAT ATt,IP

S--UaeÀ

@ FUNcTloil cot{TRoL

CONTROL CIRCUIT

- 7 IExternal Appearance of Transistors and lCs

semiconductors are representatiue onesternatiue semiconductors may be used andt parts list

2SA10152 S C 1 g 1 5

r v p e N o

25C2240

zsclT4o rYPê No

2SC2634 hFE

2SC2634NC2SAt127NC

2SC2060

2SC2673

2SD837

PMg002

1C40668PM88'rc668MHDl40668HD74LS122MB74LS122sN74LS122

8A328

G P 4 1 1 B

2æ,20212SA937

Lot No 2SD686

Lol No 4N6552NJMII558DBArfs58

TD62504P1D€2507P

L o t N o

HAl1226

L o t N o

2SD1031

2SC1383NC L o t N o

B

hrr

s

E

r c r . À r x r 1 6 ( r ) : a r c l æ

I _ l o c s r 4 p ' n r p ' 4 . '

L o l N o-

I7-

8A6124

RES|SToRS REstsroRsNote: When ordering resistors, conuert the resistance value Note: Whenordering resistors, convert the resistance ualue

into code form, and then rewrite the part no. as before. into code form, and then rewrite the part no. as before.

Mark Part No. Symbol & D€scrption It/lark Part No. Symbol & Description

** 2SC1740LNl2sc2021l(2Sc1815)(2SC26341

** 2SC2060(2SC26731(2SC1383NC)

** 8A328

* us104011s,24731

OTHERS

Mark Part No.

o701-o704

0705, 0706

tc701

D701-D704

Symbol & DescriPtion

RDTcPM Dtrtr JRSlPF t rOOJ

SEMICONDUCTORS

tt/lark Part No.

R701-R720, R723-R735R721, R722

Symbol & Descrption

RCP-189

RCP-193

RD74PM ODtr J

SEMICONDUCTORS

ll/lark Part No.

vR401, VR403, VR501. VR503Semi-fixed e.2k-BlVR402. VR502 Semi-f ixed (1Ok-Bl

R401 -R41 3, R41 5-R433, R435-R447,R501-R513, R51 5-Rs33, R535-Ril7,R601-R613

ùmbol & Description

0401, 0501

rc601, tc602tc612

tc610, tc611rc607, rc608rc603-1c606, 1c609

D401, D402, D404, D406. D408,D501. D502, D504, D506, D508,D601-D608D403, D405, D407

Symbol & Description

RKN-075

Dolby Assembly (RWX-550)

cotLs

Mark Part No.

RTF-O9ORTF€92

CAPACITORS

Mark Part No.

Jack assembly


L4O2, Lû2 Coil (36mHl

L401 , L501 Coil (36mHl


** 2SA933(25410151(2SA1 127NCl(2SA9371

** H411226** NJM4558D

(AN6s52)(8A45581

** TD62504P** TD62507P*t TC4066BP

(M884066BMl(HD1406681152473(us1040)

1 K34A(1K60A){0A90)

I

OTHERS

It/lark Part No.

RKP446RKP.346

Connector assembly 12P

Connector assembly 3P

cEA 100M 16

cEA 010M 50CEA R33M 50CEA RlOM 50

coMA 1 s3J 50

coMA 104J 50coMA 1 82J 50coMA473K 50coMA472K 50

coMA 183K 50coMA 394K 50ccDHsL 221K 50c E A 4 7 1 M 1 6CEA R47M 50

c ,4o1,@11,@13.æ14,@21 ,c42A, U34 CsOl , C51 1 , C513,c514, C521, C528, C532, C601-c603@06,u24, C506, C524c419, et20, c519. C520cr' ,og,c417, C418, C509, C517.c518

c/'og, u12, c425, C426, C504,c512, C525, C526c410, c510c402,c/.16, C502, C516uo', c429, C505, C529uo7,u23, c507, C523

c431, C531cA27, C527uo4, c504c433, C533c403, c503

RD'/aPM Etrtr JRD'/2PSF Utrtr J

SEMICONDUCTORS

Mark Part No.

R801 -R804, R806-R808,R810, R81 1R805, R809


Indicator Assembly ( RWX-528)

CAPACITORS

Mark Part No. Symbol & Description

cEA 100M 16

RESISTORS

Note: When ordering resistors, conuert the resktance ualueinto code form, and. then rewrite the part no. as before.

Mark Pan No. Symbol & Description

c801, c802

* * 8A6124* GL-gPG4* GL.gPR4* L N 1 2 1 5 8 P

rc801, tc802LED8O1.LED8O4. LED8O6LED8O5. LED8O7LED808-LED819 LEDarray

cEA R15M 50 c430, cs30coMA 152K 50 C435, C535CKDYB 222K50 C434, C436, C536

DIAGRAM

Au t '

! : '

' - : l l ' * ' "

' î { ' ' . : : i }

"

!7

D

32

54 6lNOTE:The indicatedonly. Other aliare listed in the a

Io o r , @ q , d . @oær,5o2 sa , s3 ,s t

SETSOR a. . t

- lI

J

6CrTaOlnd 2!Crara

ssr rPr FrLlEi oN - oFFslo2 æLtY ilR ofl - otFSS3 : æLÊY ftI IEE.]q - TYPÊ C

RE6 - ! f ! -PLAY

oi - 8!fs7o2: rd9ul sElCClOi tr - ffrcs7o3 : rtPuT SEL6C'Oi Lrf,E - rrc

o t r - É

o i - EO N - 9 8

sr201 ERAS€ æVENT ûtECrOR AO(É - rc @.Ëo i - E

sr@t : TAÉ SELECT@ CrO. - IEIAL

S'O2, TÂÈ S€LECTOR rciM _ HIGH

NOTE;Playback signal routeRecording signal route

654

1O. PARTS LISTNOlES:c When ordering resisfors, first conuert resistance ualues into code form as shown in

the following examples.Ex 1 When there are 2 effectiue digits (any digit apart from 0), such as 560 ohm

and 47h ohm (tolerance is shoun by J = 5%, and K = 107o).RDY4PS E6mJRDY4PS EilEEJR N ? H O E E Ko 5{t

l ç l

Miscellaneous Parts

P.C. BOARD ASSEMBLIES

Mark Part No.

5 6 0 f ù 5 6 x 1 0 ' 5 6 1 . . . . . .4 7 h t t 4 7 x l o t 4 7 3 . .

0 1 0 . . R s t P o D O rEx. 2 When there are 3 effectiue digits (such as in high precision metal film resis-

tors).5 6 2 h a 5 6 2 x 1 0 0 5 6 2 1 . . . . R N % S n E 6 A E F

o The ., . , marh found on some component parts indicates the importance of thesafety factor of the part. Therefore, when replacing, be sure to use parts of identicaldesignation

o For your Parts Stoch Control, the fast mouing items are indicated with the marhs** and *.**: GENERALLY MOVES FASTER THAN *.This classification shall be adjusted by each distributor because it depends on modelnumber , temperature, humidity, etc.

CAPACITORS

Mark Part No. Symbol &

Symbol & Description c c D S L 1 8 1 K 5 0

C E A N L l O O M 1 6CEA R22M 50CEA R47M 50cEA 01 0M 50

CEA 4R7M 50c E A 1 0 0 M 1 6

cEA 100M 35cEA 470M 10cEA 330M l6cEA 470M 16c E A 4 7 0 M 1 0

c E A 1 0 1 M 2 5c E A 1 0 1 M 1 6cEA 221M 25c E A 2 2 1 M 6 . 3c E A 2 2 1 M 1 6

c E A 4 7 1 M 3 5cEA 332M 25coMA 103J 50coMA 1s3J 50coMA 223J 50

coMA 473J 50coMA 1 82K 50coMA 103K 50CEA 2R2M 50coMA 104J 50

coMA 102K 50coMA 332K 50coMA 273J 50

c 1 0 1 , c 2 0 1c102, c202c129, C229c117. c217 ,c31 I

c 1 1 9 , C 2 1 9 .c108, c109,c l 1 5 , C 1 1 8 ,c209, c21 1 ,c218, C220,c323

c301c308c103, c203,c312, C336,c107, c207,

c31 0c327, C32Ac303c324c305, c31 1

c302c312c l05 , c205c l 1 0 , c 2 1 0c122, C222

RWX.528RWX.526

RWX-527BWX-550

OTHERS

Mark Pan No.

Indicator assemblyMother assemblySensor assemblyVo lume assemb lyFunct ion swi tch assembly

Jack assembly

Dolby switch assemblyDetector assembly

1r1f0, c23o1 ;


. c 1 1 2 , C 1 1 4 ,, c127, C208,, c214, C215,, c309, c318,

"f ,.rru, "..,u

,A

AA

* RTT-237RDG.O22(RDc-030)

* RXP-Og2

A * BXP-1ooA * R X P - 1 o l

RXM-076** RPB_096

* RPB-097

Mother Assembly ( RWX-526)

SWITCH AND COILS

lViark Part No.

Power t ransformer (1 20V)AC cord

Plunger solenoid P

Plunger solenoid FPlunger solenoid R

Motor assemblyErase headREC/PB head


** RSB-028RTF-089RTF-084RTF-085RTF-086

RTF-O57RTD-026

5304 Rotary swi tchL101 , L201 MPX f i l t e r co , ,L1O2, t2O2 Trap coi l

L103, L203 Peaking coi l (3.9mH)

L104 , L2O4 Peak ing co i l ( 1 . 5mH)

L301 Line coi lL302 OSC coi l

c124, C125c33 1c322c307c321

c329, C330c l 1 6 , C 2 1 6c126, C226

24

Mark Part No, Symbol & Description Mark Part No. Symbol & Description

RESISTORS

Note: When ordering resistors, conuert the resistance ualue

coMA 223K 50coPA 332J 100ccDsL 220K 50

ccDsL 101 K 50ccDsL 101K 500ccDsL 471 K 50CKDYF 1032 50CKDYF 473250

CKDYF 102250RCG-007

c332c333c106, c206

c104, c l13,C204,C213c128, C228c121, C221c306, c317, C318, C325, C326c335, C334

c304C316 Capaci tor array

* WO3B(w03c)

* 1S2473(us1040)

* RD6.2E(wz-061)10226.2Al

* BZ-050( R D 5 . 1 F B 1 I

* wz-073* wz-040

OTHERS

D303, D305, D307. D310-D313

D304, D316-D326, D306

2D301

2D302

2D3042D305

Symbol & Descriptioninto code form, and then rewrite the part no. as before. 111s7y part No,


* RCP-150(RCP-195)

* RCP-193(RCP-149)

* RCP-1 55(RCP-2001RD%PM!tr!J

RDi/2PSFtrtrtrJ

A RD%PSFtrtrÛJ

A Rs lPF! ! t rJ

SEMICONDUCTORS

Mark Part No.

VR101 , VR201 Semi-f ixed {22k-B)

VR1O2, VR202 Semi-f ixed (1Ok-B)

VR103, VR203 Semi.f ixed (1SOk-Bl

R102, R 1 04-R1 57, R202, R204-R257, R302-R307, R309-R334,R336-R343, R346, R347, R349-R355R301, R348

R335, R344, R345R308


RKB.Ol 8** RSG- I23** RSR-035

M15-414

Sensor AssemblylVlark Part No.

Te rm ina l ( L INE)

S301-5303 Push switch assembly

RY301 Lea_d relay

14- Shield case


* cP-41 18RD74PM 2O1JRD/4PM 162JcEA 100M 16

Volume AssemblyMark Part No.

Photo interrupterR1 001R1 002c1001


* *

* *

t *

* *

* *

* *

2SC1 740LN(2SC181 5)(2SC2021 LNI(2SC2634NC)25C2240

2SC1 740-5(2SC1740LN-S)254933 LN( 2 S A 1 0 1 5 )(254937)(2SA1 127NC)

2SC2060(2SC2673)(2SC1 383NC)2SD837( 2 S D 1 0 3 1 )(2SD686)

o1 01, C)1 04-01 1 4, 4201, 4204-a214,4302

0102, 0103, 0202, 0203

o31 1-o31 3

0303, o308-o310, o314, O31 5

0304-o307

o301

tc301rc302

D301D302, D308

* RCV-094

Function Switch AssemblyMark Part No.

VR l101 Vo lume ( INPUT)


** RSG-088r* RSG-063* * R S G - I 1 4

5901-5904 Push switch5905-R907 Function switch5908 Push switch

Jack Assembly ( RWX-527)SWITCH


** RSG-I24

CAPACITORS

Mark Part No.

5701 Push switch


** PM9002** MB74LS122

(HD74LS122l(sN74 LS1 22)

* s2vc l0RF* s2vc10F

CKDYB 471K 50ccDsL 101 K 50C E A N L l O O M 1 6cEA 01 0M 50c E A 1 0 0 M 1 6c E A 4 7 0 M 1 6ccDsL 470K 50CKDYF 473250

c701, c702c713, C714c703, c704c709, c710c707, c708, c711, C712, C717,C718c705, c706, c715, C716, C719c721, C722c720

25

tt. nÉcLAcES rvlÉcnrutouEsAvant de procéder au réglage

Nettoyer les deux supports de bobine, le ca-bestan et le galet presseur à I'aide d'un bâtonnetimbibé d'alcool.

1 1 . 1 R É C I E C C D E L A F O R C E D ' A P P U I D UGALET PRESSEUR

1. Mettre la platine en mode de lecture.2. Appuyer doucement sur le bras du galet

presseur à I'aide d'une jauge de pression et se-parer légèrement le galet presseur du cabestan.

3. Laisser ensuite revenir Ie galet presseur sur lecabestan et lire la valeur lorsque le galet pres-seur commence à toumer. Si la valeur lue nese situe pas entre 3509 et 5509, remplacer leressort du galet presseur.

- I n d i c a t e u r d e t e n s i o n{ P i ê c e n o G G K - 0 4 7 )

Cabestan

Gale t -presseur

Bras du galet-presseurRessort de pression dugal et-presseu r(P ièce no RBH-742 )

Fig . 1 1 -1 Rég lage de la p ress ion du ga le t -p resseur

11.2 RÉGLAGE DU COUPLE DU SUPPORTD E B O B I N E

Mesurer le couple à I'aide d'un dynamomètredans les modes de lecture, d'avance rapide (FF) etde rebobinage (REW). Les valeurs mesurées doiventnormalement se situer dans les limites admissiblesdonnées au tableau 1.

Si les valeurs mesurées se trouvent en dehors desplages indiquées, remplacer I'ensemble support debobine TU (réception) etlou I'ensemble support debobine débiteur, la poulie libre TU ou I'ensemblecomplet du bras d'entraînement.

Tableau 1

o Couple de tension inverse

< J

11 .3 BÉGLAGE DE LA V ITEDEFILEMENT DE LA B

1. Raccorder le fréquencemèsortie LINE OLITPUT.

cabestan, comme indiqué à la

La vitesse de défilement de la bandetance ajustable est tournée dans le senset elle décroît lorseue l'on tourne la

2. Reproduire la partie à 3kHz I[ bande d'essaiSTD-301. Au début, la fréq doit se situerdans la plage de 2995H2 à 30 Of[2, et elle peutêtre réglée en toumant la rt ajustablesituée dans le trou de ré

flrx bomes de

du moteur-1r-2.

te lorsque la résis-d'une montre.

sens tnverse.

! é f i l emen t de l a

t d e l a b a n d e

oÉrec.

é lpar une flèchefflle que si unede protection

Htrargée dans le

\

bande

s-V i $ s e d e d i f i l e m e n tde la bonde d iminuée

Fig . 1 1 -2 Rég lage de la v i tesse de dé f

11.4 RÉGLAGE DU CONTTION D 'ENREGISTREM

Rég le r l ' e rgo t ( + ) isur la figure 11-3 sur unecassette possédant unecontre I'effacement accidentelIogement, le contact à levier eSclenché (ON),et que si une cassette démuniede protection est chargée, le con(oFF) .

0ette languettesoit déclenché

Plaque la té ra le gauche

Levier de commutaleur(Commutateu rde détect iond'en registremen t l

Lev ie r de dé tec t iond 'en reg is t re men t

Fig . 1 1 -3 Rég lage du commutad 'en reg is t remen t

Support debobine TU

Support debobine débitrice

Mode de lecture

Mode FF

Mode REW

35 à 55g.cm

7 5 à l l 0 g c mr 2 à Sg.cm

r 2 à Sg.cm

o 2 à Sg.cm

75 à 1 1Og .cm

{: détection

îl.s RÉGLAGE DE L'ENSEMBLE DEDETECTION

Desserrer la vis O et régner h position demontage de I'ensemble de détection de manièreà ce que lorsqu'une cassette de type "NORMAL"est chargée dans le logement le contact à curseursoit déclenché (OFF), et que lorsqu'une cassettede type "METAL" est chargée, le contact à curseursoit enclenché (ON).

contact à curseur --*

Ensemblede détection

Fig. 114 Réglage de l 'ensemble de détection

11.6 RÉCI-RCC OE L'ÉLECTRO.AIMANTD'AVANCE RAPIDE (FF)

Mettre la platine en mode d'avance rapide (FF).Desserrer la vis O et régler la position demontage de l'électro-aimant d'avance rapide(FF) de manière à ce que le trou ca:né deI'ensemble support de bobine soit de niveauavec la bosse de I'ensemble du bras d'entraîne-ment (c'est-à-dire avec un êcart zêro), commeindiqué sur la figure 11-5.

11.7 NÉCUCE DE L'ÉLECTRO-AIMANT DEREBOBINAGE (REW)

1. Mettre la platine en mode de rebobinage(REIry).

2. Desserrer la vis @ et régter la position demontage de l'électro-aimant de rebobinage(REW) de manière à ce que le trou cané deI'ensemble support de bobine soit de niveauavec la bosse de I'ensemble du bras d'entraÎne-ment (c'est-à-dire avec un êcafi zérol, commeindiqué sur la figure 11-5.

Contre.cabestan

Support debobine

dérouleuse

Mode de rebobanage(REWI

Engrenaged'entra înement

Contre{abestan

Support de bobine dérouleuse

Electro-aimant d'avance rapide ( F F l(électro-aimant F) r,

Position d'avancerapide (FF)

Séparation 0

Support debobihedébitrice

Contrecabestan

lMoo" d'"u"r,."rapide (FFl

Engrenage d'entra inement

Support de bobine dérouleuse

I

1 .2.

Fis.11-5 Régtage de l 'électro-aimant d'avance rapideet de rebobinage

Électro-aimant de rebobinage (REWI(électro-aimant R)

1 1 . M ECHANICAL ADJUSTMENTSPrior to adiustment

Clean the both reel base, the capstan and thepinch roller with an alcohol moistened swab'

1 1 . 1 P I N C H R O L L E R P R E S S U R E A D J U S T -M E N T

1. Put the tape deck into the playback mode.2. Gently push against the pinch roller arm with

the tension gauge and separate the pinch rollerslightly from the caPstan.

3. Then the pinch roller back onto the capstan,and read the value when the pinch roller startsto rotate. If the reading fails to lie within3509 550g, replace the pinch pressurespnng.

Capstan

Pinch ro l ler armrrncn ro l ler pressure spnng(Part No. RBH-742)

Fig. 1 1-1 Pinch ro l ler pressure adjustment

11.2 REEL BASE TOROUE ADJUSTMENTMeasure the torque with the torque meter

during playback, fast forward (FF) and rewind(REW) modes. The measured values shottld normal-

ly lie within the allowable ranges listed in thetable 1.

If the measured values lie outside the relevantranges, replace the TU (take-up) reel base assemblyand/or supply reel base assembly, TU idler, ordrive arm full assembly.

Table 1

11.3 TAPE SPEED ADJUST1. Connect the frequencY

OL/TPLIT terminals.2. Play back the 3kHz Portion bhe STD-301

test tape. At the beginni frequency- 3010H2should be l ie within the

range, and may be adj turning theapstan motorsemi-fixed resistor located in

adjustment hole as shown in rL-z.Tape speed is increased bY turning the xed resistot clock'

wise, and decreased bY turntng coun

increased

Tape speed decreased

screwd ri ver

Fig. 11-2 Tape speed

11.4 REC DETECTOR SWI USTMENTAdjust the tange (f) sho Fig. 11-3 by

en a cassetæ

to the LINE

into then a cassette

itch is OFF.

detector lever

Tension gauge(Part No. CGK-047)

the arrow to a position whwith an erase prevention detecholder, the lever switch is ON,without the detector is loaded.

Side plate L assemblyI

Lever switch(REC detectorswitch )

Fig. 11-3 REC detector swiTU reel base Supply reel base

Playback mode 35 - 55g.cm 2 - 5 9 c m

FF mode 75 - 1 1Og.cm 2 - Sg.cm

REW mode * 2 - Sg.cm 75 - 1 1og . cm

* Do notes back tension torque

11.5 DETECTOR ASSEMBLY ADJUSTMENTLoosen screïv Q and adjust the detector as-

sembly mounting position when the NORMALcassette tape is loaded into the holder, the slideswitch OFF, and the METAL cassette tape isloaded, the slide switch is ON.

Fig. 11-4 Detector assembly adjustment

11.6 FF SOLENOID ADJUSTMENT1. Put the deck into FF mode.2. Loosen screws Q and adjust the FF solenoid

mounting position so that the square hole ofthe reel base full assembly is flush against theboss of the driving arm full assembly (i.e. 0separation) as sholvn in Fig. 11-4.

11.7 REW SOLENOID ADJUSTMENT1. Put the deck into REW mode.2. Loosen screw @ and adjust the REl{ solenoid

mounting position so that the square hole ofthe reel base full assembly is flush against theboss of the driving arm full assembly (i.e. 0separation) as shown in Fig. 11-4.

REW posi

ldler gear

Supply reelbase assembly

REW Mode

TU idler

ldler gear

Supply reel base assembly

FF solenoid (solenoid F)

F position

TU rêel baseassembly

I

ldler gear

IFF Mode

$rpply reel base assembly

Fig. 11-5 FF (REW) solenoid adlustment

Boss (Driving arm full assembly)

12. ELECTRICAL ADJUSTMENTShecaution

1.. Mechanical adjustment should be completed.2. Clean the following parts with an alcohol

moistened swab: Record/Playback head, pinchroller, Erase head, Rubber belts and Capstan.

3. Demagnetize record/playback head with a headdemagnetizer.

4. Do not use magnetized screwdriver for adjust-ments.

5. Adjustments and measurements should be per-formed for both L ch and R ch with ratedpower supply voltage.

6. Adjustments should be performed in the ordergiven in this service manual. Altering the ordercan hinder proper adjustments, resulting in lossof perforrnance.Level during measurements are based on 0dBv= lV. Connect a 50kQ (47 - 52kO ) dummyresistor across the OUTPUT terminals.Let the CT-5 warm up (aging) for a fewminutes before proceeding with the adjust-ment.Set the DOLBY NR switch to OFF and TAPESELECTOR to the NORM position unlessdirected otherwise.

Test Equipments/Tools Required:1. Test tape

STD-341A . . For pl4ybrck adjustmentSTD-608A . . NORMS,II blasrk tapeSTD-603 . . . . CrOz b fanhtapeSTD-604 . . . . METAt r ,b lank tape

2. Audio oscillator3. AC millivoltmeter (AC mV)4. Attenuator5. Oscilloscope6. Resistor 50kC2 (47 - 52kf,2 )

Fig. 12.1 Contents of the test tdperSTD-3t41A

7 .

8.

9.

12.1 DOLBY NR ADJUSTMENTSettingMode. . . RecordInputS igna l . . . . .700H2, -10dBv (316mV)

to LINE INPUTA C m V m e t e r 1 - . . . . . . . . . T P 1 ( L c h , R c h )

of the Dolby assemblyAC mV meter 2. . . . TP2 (Lch, Rch)

of the Dolby assemblySince the left and right channels are identical, numbering

of the TP terminals of the Dolby assembly is appl ied toboth channels. When adjustment, please refer to Fig. l2-9.

Procedure1. Adjust the INPUT level control so that the AC

mV meter 1 reads -2.2dBv (776mV).2. Adjust the VR403 (Lch) and VR503 (Rch) so

that the AC mV meter 2 reads -2.2dBv(776mV) .

3. Next set the CT-5 to the playback mode andapply the input signal (700H2, -10dBv;316mV) to the TP1 (Lch) and TP2 (Rch) ofthe mother assembly.

4. Adjust the attenuator so that the AC mV meter2 reads -2.2dBv (776mV) and then adjust the

33

VR401 (Lch) and VR501 (Rch) so that the ACmV meter 1 reads -2.2dBv (77drnV1.Apply the input signal (70OHz, -1OdBv;316mV) to LINE INPUT.Set the CT-5 to the record hode and connectthe AC mV meter to the R.O. {REC OUT) ter-minal of the Dolby asse$bly. Adjust theINPUT level control so thatrthe AC mV meterreads -32.6d8v (23.4mV).Set the DOLBY NR switch tD ON (C type)position and adjust the att{rqftor so that theAC mV meter 1 reads -eZ.6Anf (2B.4mV) andthen adjust the VR402 (Lch) a4d VR502 (Rch)so that the AC mV meter 2 treads -21.6dBv(83.1mV) .

I> REC/FIB. head

5 .

6 .

nl .

Fig. 12-2 Head azimuth #juttment

12.2 I{EAD AZITIUTH ADJUSTMENTSettingMode . . . . P laybackTestTape . SID-3414

(10kHz, - 20dB)AC mV meter . . . LINE OUTPUTVR101, VR201 Turn up to ma:rimum

position

ProcsdureAdjust the azimuth adjusting screw for maxi-

mum AC mV meter readings for both L and Rchannels. After this adjustment, lock the screwwith screw lock.

S T D ' 3 4 I 4r 0 ( H z - 2 0 d 8

Fig. 12-3 Head azimuth adjustment

12.3 PLAYBACK EOUALIZER ADJUSTMENTSetting

12.4 PLAYBACK LEVEL ADJUSTMENTSince this adiuilrnent determinec the DOLBY NR lewl

during playback, it should be performed prccirely.

SettingMode .. . . PlaybackTest Tape . STD-841A (333H2, 0dB)AC mV meter . . . TPl (L ch) and TP1

(R ch) of the DOLBYassembly

ProcedureAdjust the VR101 (L ch) and VR201 (R ch)

so that the AC mV meter reads - 1.2 dBv (0.87V).

s l D333H2

Fig. 12-5 Playback level adjustment

12.5 OVERALL FREOUENCY RESPONSEADJUSTMENT

SertingModeTest Tape

AC mV meter

Procedure1. Play back the 333H2 and 6.3kHz portions of

the STD-341A, and check that difference be-tween the two output levels does not exceed1.5d8!2d8.

2. Connect the tenninal No.22 with No.23 ofthe mother assembly.Play back the 333H2 and 6.3kHz portionsagain, and check that the difference betweenthe two output levels does not exceed-2.5dBi2dB.

PlaybacksTD-341A(333H2 and 6.3kHz,-20d8)

LINE OUTPUT

ModeTest Tape

AC mV meterInput Signal

RecordsTD-6084, STD-603,sTD-604LINE OUTPUT333H2, -30dBv (31mV)to LINE INPUT

NORM Dosrrronl 3 3 H z o u l o u l - 6 . 3 k H z o u l o u l= l S d B i 2 d B

STD-6084

Fig. 12-6 Overall frequency response adiustments i D - 3 ! r a333Hr -20d46 3k. -20d8

L I N E O U T P U T

333Hr tu rour -6 3 rHr e rDu l

= o . S d B t 0 5 d B

Fig. 124 Playback equalizer check

11. AJUSTES MECANICOSAntes del ajuste

Limpiar ambas bases de los carretes, eje dearrastre y rodillo de presiôn con algodôn humede-cido en alcohol.

11 .1 AJUSTE DE LA PRESI6N DEL RODILLODE PRESIôN

1. Establecer el magnetôfono en el modo dereproducciôn.

2. Con el calibrador de tensiôn presionar ligera-mente contra eI brazo del rodillo de presiôny separar un poco dicho rodillo del eje dearrastre.

3. Luego reposicionar sl rcdille de presiôn sobreel eje de arra.stre, y leer el valor en el momentoen que el rodillo de presiôn empieza a girar.Si la indicaciôn cae dentro de 3509 - 5509,reemplazar el muelle del rodillo de presiôn.

Calibrador de tensi6n(pieza no GGKO47)

Eje de arrastre

Rodi l lo de presiôn

Fig. 11-1 Ajuste de la pres i6n del rodi l lo de presiôn

11.2 AJUSTE DE LA TORSIÔN DE LA BASEDEL CARRETE

Uttlizat el modidor de torsiôn para medir latorsiôn durante las funciones de reproducciôn,avance râpido (FF) y rebobinado (REW). Losvalores medidos deberân estar normalmente dentrode los lfmites permisibles enumerados en la tabla 1.

Si los valores medidos no estân dentro de taleslfmites, reemplazar eI conjunto de la base del carre-te de a:nastre (TU) y/o conjunto de la base del ca-nete de suministro, rueda de guia TU, o todo elconjunto del brazo de arrastre.

Tabla 1

. las notas se apoyan en la torsiôn de la

11.3 AJUSTE DE LA VELOCICINTA

1. Conectar el frecuencimetro a

DE LA

salida de lfnea (LINE O2. Reproducir la parte de la cinta de

frecuencia3010H2, y

prueba STD-301. Aldeberâ estar entre 2995HZ,podrâ ajustarse girando el semifijo,situado en el orificio de ai motor deleje de arrastre, como se m7t-2.

en la figura

La veloci&d de la cinta aumentaré la derecha elresistor semifiio, y se reduciré giréndolo hacia

Veloc idad d isminu idada la c in ta

Fig. 11-2 Ajuste de la velocidad c in ta

DETECTOR11.4 AJUSTE DEL INTERRDE GRABACIÔN

Ajustar la lengueta ( + ), a e n l afigura 11-3 mediante la flecha, a iôn en laque al cargar un casete con eI de preven-ciôn contra bonado. el inte quede en laposiciôn ON y al cargar un casequede en la posiciôn OFF.

el detector,

Brazo del rodi l lode presiôn Muel le del rodi l lo de presiôn

(pieza no F.BH-742t-

lor dezontal

75 - 1 l 0g . cm

Motor del ele

Conjunto L (izq.)de la placa lateral

Palancâ detectoraIde GRAB.

C;onjunto del deæctor

Fig. 11-4 Ajuste del conjunto del detector

11.6 AJ,USTE DEL SOLENOIDE DE AVANCERAPIDO

1. Establecer el magnetôfono en el modo deavance râpido.

2. Aflojar los tornillos Q y aiustar la posiciônde montaje del solenoide de avance râpido demodo que el orificio cuadrado de todo elconjunto de la base del canete quede em-potrado contra el cubo de todo el conjuntodelbrazo de arastre (i.e. separaciôn 0) como semuestra en le figura 11-b.

11,7 AJUSTE DEL SOLENOIDE DEREBOBINADO

1. Establecer el magnetôfono en el modo derebobinado.

2. Aflojar los tornillos €) y 4iustar la posiciônde montaje del solenoide de rebobinado demodo que el orifieio cuadrado de todo elconjunto de la base del carete quede em-potrado contra el cubo de todo el conjuntodel brazo de arrastre (i.e. separaciôn 0) comose muestra en la figura 11-5.

Cubo (conjunto completo delbrazo impulsor)

Posiciôn REWPoeiciôn FF

Separacién O

I

Fig. 11-3 Ajuste del interruptor detector de GRABACIôN

11.5 AJUSTE DEL CONJUNTO DETECTORAflojar el tornillo Q y ajustar la posiciôn de

montaje del conjunto detector de modo quecuando se cargue un casete NORMAL, el inter-ruptor deslizante quede en la posiciôn OFF, yeuando se cargue un casete de METAL, el inter-ruptor deslizante quede en la posiciôn ON.

Interruptor desli zante ---_!---;>

Conjunto dela base delcarrete desuministro

III

Conilnto de labæe del carretede arrastreEngranajeintermedioModo €,e BEW

Intermediode arraslre

Engranaje intermedio

Modo de FF

' Engranaje imfulsor

@njunto de la base delcarrete de suministro

Solenoide de FF(solenoide Fl

Conjunto de la base del carretede suministro

Solenoide de REW

Fig. 11-5 Ajuste del solenoide cle FF (REW)

Engranaie

12. RÉclnces ÉlecrRtouESPrécautions1. Les réglages mécaniques doivent être terminés.2. Nettoyer les pièces suivantes à I'aide d'un

bâtonnet imbibé d'alcool: tête d'enregistre_ment/lecture, galet presseur, tête d'effacement,courroies en caoutchouc et cabestan.

3. Démagnétiser la tôte d'enregistrement/lecture àI'aide d'un démagnétiseur de tête.

4. Ne pas utiliser de toumevis magnétisé pour lesréglages.

5. Les réglages et les mesures doivent être réaliséspour les canalD( de gauche et de droite avec latension d'alimentation n ominale.Les réglages doivent être effectués dans I'ordreindiqué dans ce manuel de service. Une modifi-cation de cet ordre peut empêcher la réalisationde réglages corrects et peut provoquer unebaisse de performance.Les niveaux en cours de mesure sont basés surOdBv : 1V. Raccorder une charge fictive de60 kS) (47 à 52 kSl) entre les bornes de sortie(ouTPUT).

8. Laisser chauffer (vieillissement) le CT-bpendant quelques minutes avant de procéder

aux réglages.9. Placer le commutateur DOLBY \R sur OFF er

le sélecteur TApE SELECTôSl sur la posrr ionNORM, sauf indication conÛaijb.

Equ ipements/outi ls d'essai requit1. Bande d'essai

STD-341A . . . pour le r{glage de Iareproduolion

S T D - 6 0 9 A . . . B u r d e , , i l X o R M A L "\'1rr l'ge

STD-603 . . . . . Bande, .0 rOz"v ie rgeS T D - 6 0 4 . . . . . B a n d e , , l i l E T A L " v i e r g eOscillateur BFMil l ivol tmètre al tenrat i f { mV C_A)AtténuateurOscilloscopeRésistance 50 kC2 (47 à b2 kO )

N r v e a u { d I I

F i g 1 2 . 1 C o n r e n u d e t a b a n d e d ' q s s E i S T D _ 3 4 1 A

6. ,3 .4 .5 .6 .

t .

Réglage

12.1 REGLAGE DU SYSTEME DE REDUCTIONDE BRUIT DOLBY

régler ensuite le VR401 (catral gauche) et leVR501 (canal droit) afin qtæ I'indicateur1mV CA indique - 2,2dBv (7f76hnv).

5. Transmettre le signal d'entréer(?0 \Hz,_ 10dBv:316mV) sur LINE INPUT.Régler le CT-5 sur le mode dlenSegistrement etraccorder I'indicateur mV 0A sur la borneREC OUT du montage Dolbf. Régler la com_mande de niveau d'entrée (lNFUf; afin quel'indicateur mV CA indfiqrF - B2,6dBv(23,4mV) .

ModeS i g n a l d ' e n t r é e . . . .

Indicateur 1mV CA

Indicateur 2mY CA

Enregistrement. . . ?OOHz, -10dBv (B16mV)

sur LINE INPUTTP1 (canal gauche,

canal droit) du montage DolbyTP2 (canal gauche,

canal droit) du montage Dolby

6 .

Les canaux droit et gauche étant identiques, la 7.numérotation des bornes Tp du montage Dolbyest valable pour Ies deux canaux. Voir la Fig.12-9 lors du réglage.

Méthode1. Régler la commande de niveau d'entrée afin

que l' indicateur 1mV CA indique -2,2dBv(776mV) .

2. Régler le VR403 (canal gauche) et le VR50B(canal droit) afin que I'indicateur 2mV CAindique - 2, 2dBv (Z?6mV).

Téte de repro{ucffon/enregtstremenl

3 .

4.

Régler ensuite le CT-b sur le mode de reproduc-tion et transmettre le signal d'entrée (lOOlHr.- 10dBv; 316mV) au Tp1 (canal gauche) eiTP2 (canal droit) du montage principal.Régler I'atténuateur afin que I'indicateur2mY CA indique - 2,2dBv (??6mV) et Fig . 12-2 Rég lage de t ,az imut ld (

I A12.2 REGLAGE EN AZIMUT DE LA TETEPréparationMode .LectureBanded'essai . . . . STD-341A(10kHz,

- 20dB)Millivoltmètre CA A la sortie de ligne

(LrNE OUTPUT)VR101, VR201 . . Tournées en position

maxlmumProédure

Régler la vis de réglage d'azimut cle mar"rière àobtenir I'indication maximum du nrillivoltrnètreCA pour les canaux de gauche et cle droite.Lorsque ce réglage est terminé. verrotrillt'r la vis àI'aide du blocage de vis.

Fig. 12-3 Réglage d'azimut de la téte

12.3 nÉcuce DE L'ÉcALrsATtoN DELECTURE

PréparationModeBande d'essai

Millivoltmètre CA

Procédure

Procéder à la reproduction des passages de333H2 et de 6,3kHz de la bande STD-341Aet vérifier que la différence entre les deuxniveaux de sortie n'excède pas 1,5dB12dB.

Brancher le terminal no 22 au terminal no 28de montage principal. Procéder de nouveauà la reproduction des passages de 333H2 etde 6,3kHz et vérifier que la différence entreles deux niveaux de sortie n'excède pas - 2,5dBt2dB.

. ---_ t"',," oi j?ÊL' pcition NoRMre . a . [ - , . __ ]

- - - - J11 I t # , - . ' so r r i e 33Hz - son ie 6 .3kHz

Pcurel} - L-" : ] I i l=1,5dgt2ae

i I l s o o osroà,o i333H2, 6,3kHz-20d8

12.4 NÉAUCE DU NIVEAU DE LECTUREGe r6glage déterminant le niYeau ds DOLBY NR pen'

dant la lecture, il doit être réalis6 avec précision.

PréparationMode LectureBande d'essai .. .. STD-3414(333H2,'0dB)Millivoltmètre CA . TPl (canal de gauche

"L") et TPl (canal dedroite "R") de I'en-semble DOLBY

ProédureRégler VR101 (canal de gauche) et VR201

(canal de droite), de manière à ce que le milli-voltmètre CA indique - 1,2dBv (0,87V).

Fig. 12-5 Réglage du niveau de lecture

I

I

12.5 nÉcuce DE LA nÉporuse erurRÉouerucE GLoBALE

LectureSTD-341A (333H2 et6,3kHz, - 20dB)Sortie de ligne(LrNE Or..rTPUT)

PréparationModeBande d'essai

EnregistrementSTD-608A, STD-603,sTD-604Sortie de ligneLINE OUTPTN333H2, -30dBv (31mV)à I'entrée de ligneLINE INPUT

Millivoltmètre CA.

Signal d'entrée

Entréo de tigneL INE INPUT

Fig. 12-6 Réglage de la réponse en fréquenceateenregistrement/lecture

1 .

2.

I VR101 (onôt de gEuchol II vR2ol (cilglqqeilslj

VRlO3 (canal de gauche ,,L,,)VR2O3 (canal de droila "Ft,'l

Fig. 12-4 Contrôle de l'égalisation de lecture

Procedure1. Adjust the INPUT level control so that the

AC mV meter reads - 27dBv (44.6 mV).2. Record the 333H2 and 6.3kHz signals onto the

STD-608A. Playback the tape and adjust theVR103 (L ch) and VR203 (R ch) so that thedifference between two is +0.5d810.sdB.

12.6 RECORD LEVEL ADJUSTMENTSince this adjustment determines the DOLBY NR level

during recording, i t should be performed precisely.

Setting

3. Record the 333H2 signal onPlay back the tape and adjustand VR202 (R ch) so thatreads -5.2dBv (0.54V).

Using STD-603 with DOLBY NR ON (

Record the 333H2 sigrralPlay back the tape andmeter reads -5.2dBv (0.55V)

Using STD-6O8A toith DOLBY NrB ON type)

f3f ,Hz

Using STD-6OS with DOLBY NR OFF

r

4 .

5 .

Record the 333H2 signal oPIay back the tape and chechmeter reads -5.2dBv (0.55V)

4 d 8

63xr 3 3 3 e

STD.6O8A.R102 (L ch)C mV meter

e STD-603.the AC mV

e STD-604.the AC mVB.

Mode .Test Tape

AC mV meter

Input Signal

RecordSTD-608A, STD-603,STD-604TPz (L ch) and "1P2(R ch) of the DOLBYassembly333H2, -1OdBv (316mV)to LINE INPUT

Procedure1. Set the TAPE SELECTOR to the NORM

position.2. Adjust the INPUT level control so that the

AC mV meter reads - 5.2dBv (0.55V).

Frequency ResponseUsing STD-341A with DOLBY NR OFFHoweuer, the right channel is compensated by -ldB at 63H2,and -0.5d8 at 125H2 because of the insulation effect.

63Hz 25o1z 333H2 1 k Hz

Overall Frequency ResponseUsing STD-608A with DOLBY NR OFF

2XHr

333Hr

Usins STD-604 with DOLBY NR OFF Using STD-604 uith DOLBY NP ON (B/C type)

Fig. l2-8 Frequency response

n*r--J

d xsl'#i:llxïî""li::i@

Fig. 12-9 Adjustment points

12. AJUSTES ELECTRICOS 9. Poner el interruptor cle l on

Precauciones

1. Deberân completarse los ajustes mecânicos.2. Limpiar las partes siguientes con algodôn

humedecido en alcohol: cabeza de grabaciôn/reproduciôn, rodil lo de arrastre, cabeza deborrado, correas de goma y eje de arrastre.

3. Desmagnetizar la cabeza de grabaciôn/repro-ducciôn con un desmagnetizador de cabezas.

4. No uti l izar destornil ladores magnetizados paralos ajustes.

5. Los ajustes y las mediciones deberân realizarsepara la tensiôn nominal de suministro de loscanales izquierdo y derecho.Los ajustes deberân realizarse en el orden dadoen este manual de servicio. Si se altera el ordenIos ajustes pueden resultar inûtiles, dandocomo resultado una pérdida de rendimiento.El nivel durante las mediciones se basa enOdBv : 1V. Conectar un resistor ffcticio deSOKohmios (47 - S2Kohmios) a los ter-minales de salida (OUTPUT).Dejar que el CT-5 se precaliente durantealgunos minutos antes de proceder con elajuste.

12.1 AJUSTE DEL SISTEMA DE REDUCCIÔNDE RUIDO DOLBY

Ajuste

Modo grabaciônSenal de entrada 7OOHz, - 10dBv (B16mV)

a LINE INPUTMultivoltfmetro 1 de CA . Tp1 (canales izq.

y der.) del conjunto DolbyMultivoltfmetuo 2 de CA . TP2 (cana.les izq.

y der.) del conjunto Dolby.

Puesto que los canales izquierdo y derecho sonidénticos, la numeraciôn de los terminales deTP (puntos de prueba) del conjunto Dolby seaplica a ambos canales. Cuando se realice el ajuste,referirse a la Fig. 12-9.

Procedimiento1. Ajustar el control del nivel de entrada (INPUT)

de modo que el multivoltfmetro 1 de CAindique - 2,2dBv (776mV).

2. Ajustar el VR403 (canal izq.) y VRbOg (canalder.) de modo que el multivoltfmetro 2 de CAindique - 2,2dBv (776mV).

3. Luego, establecer el CT-5 en el modo de re-producciôn y aplicar la seflal de entrada (?00Hz, - 10dBv; 316mV) al TPl (canal izq.)y al TP2 (canal izq.) del conjunto principal.

4 1

Do lby (DOLBY NR) en taselector de c inbas (TAPEposic iôn NORM a menos dcosa.

Equ ipos/herramientas de pruebas1. Cinta de prueba

STD-341A

STD.6O8A

STD.6O3STD-604

iônde ru idoO F F y e l

repcinta lblanccintacinta

pu.u "l]

de

R) en l ase diga otra

ônMAL en

en b lancoETAL en

. ) y VR501Itfmereo 1

de grabaciônCA aI termi-

del conjuntoivel de entra-

tivoltfmetro) .DOLBY NR

el ate-tfmetro 1 de

tivoltfmereov).

PRODUC.

6 .

7 .

8 .

blancd2. Osci lador sonoro3. Mi l ivol t imetro de CA (AC m4. Atenuador5. Osci loscopio6. Resistor de SOKohmios (

N I V E L ( d B )S2Kohmios)

o

?o

' O O r . c r O O r . c 5 0 r . c r O O r

F i S 1 2 1 C o n t e n i d o d e t a c i n ueba STD-341A

4. Ajustar el arenuador de m el multivol-timetro 2 de CA indiquey luego ajustar el VR401 (c(canal der.) de modo que el

Bv (776mV)

de CA indique -2,2dBv (775. Aplicar la senal de entrada

316mV) a la entrada de lfneaz, - 10dBv;

E INPUT).6. Establecer el CT-5 en el

y conectar el multivoltfmenal R.O. (salida de grabacDolby. Ajustar el controlda (INPUT) de modo quede CA indique - 32,6dBv (28,

7. Ajustar el intemrptor del sien la posiciôn ON (tipo C)nuador de modo que el mul

(canal der.) de modo que2 de CA indique -21,6dBv (

CA indique - 32,6dBv ( ) y luegoajustar el VR402 (canal i y el VR502

Fig. 12-2 Ajuste del aci

12.2 AJUSTE DEL ACIMUT DE LA CABEZA

AjusteModo . . . . . ' reproducc iônCinta de prueba . . STD-341A (10kHz'

- 20dB)Milivoltimetro de CA . . . LINE OUTPUTVR101, VR201 . . incrementar a la posi-

ciôn mâxima

ProcedimientoAjustar el tornillo de ajuste del acimut para

que el milivoltfmetro de CA ofrezca las lecturas

mâximas de los canales izquierdo y derecho.Después de este ajuste, enclavar el tomillo con elbloqueador del tornillo.

Fig. 12'3 Ajuste de acimut de la cabeza

12.3 AJUSTE DEL ECUALIZADOR DEREPRODUCCIôN

Aiuste

12.4 AJ.USTE DEL NIVEL DE REPRODUC-cloN

Puerto que esto aiuste determina el nivel del sistema

Dotby durante Ia reproducciôn, deberâ realizarse conprecisi6n.

AjusteModo . . . . reproducc iônCinta de prueba . . STD-341A (333H2' 0dR)Milivoltfmetro de CA . . . TPl (canal izq.) y TP1

(canal der.) del conjuntoDOLBY

ProcedimientoAjustar la VR101 (canal izquierdo) y la VR201

(canal derecho) de modo que el milivoltimetro deCA indique - 1,2dBv (0,87V).

I

I

ModoCinta de prueba

Milivoltfmetro de CA . . .

Procedimiento

1. Reproducir las partes de 333H2 y 6,3kHz dela STD-341A, y comprobar la diferencia entrelos dos niveles de salida no exceda de 1,5d8r2dB.

2. Conectar el terminal no. 22 al terminal no. 23del conjunto principal. Reproducir ne nuevolas partes de 333H2 y 6,3kHz, y cornprobarque la diferencia entre los dos niveles desalida no exceda de - 2.5dBt2dB.

T P I- r (€nol dor.l

Fig. 12-5 Ajuste del nivel de reproducciôn

12.5 AJUSTE GENERAL DE LA RESPUESTAEN FRECUENCIA

AjusteModoCinta de prueba

Milivoltimetro de CA . . .Sefral de entrada

Entradr ds I inr€(L INE INPUT}

reproducciônSTD-3414 (333H2 Y6,3kHz, - 20dB)LINE OUTPUT

grabaciônsrD-608A, STD-603,STD-604LINE OUTPUT333H2, - 30dBv(31mV) a LINE INPUT

333H2,-30dBv{3i mV)

c*eæo Êreproduæi6n i-/ft;

l-

Fig. 12-6 Ajuste grabaciôn/reproducciôn de la respuestaen frecuencia

FiS. 12-4 Comprobaciôn del ecualizador de repro'

ducciôn

Sslida do 3:BHz - relid€ d€ 6'3kHz

= 0,5d8 t o,s dBVF103 {6n61 izq IVF2O3 l@nsl (|€r I

Proédure

1. Régler la commande de niveau d'entrée INPLITde manière à ce que le millivoltmètre CAindique - 27 dBv (44,6mV).

2. Enregistrer les signaux à 333H2 et à 6,3kHzsur STD-608A. Lire la bande et régler VR103(canal de gauche) et VR203 (canal de droite)de manière à ce que la différence entre lesdeux soit de *0,5d8r0,5d8.

12 .6 REGLAGE DU NIVEAU D 'EN-R E G I S T R E M E N T

Ce réglaç cléterminant le niveau de DOLBY NR pen-dant l'enregirtromont, il doit 6tre réalisé avec pr6cision.

Préparation

3. Enregistrer le sigrral de z sur la banderégler VR102STD-608A. Lire la

(canal de gauche) et VR canal de droite)

5 .

de manière à ce que leindique - 5,2dBv (0,54V).

4. Enregistrer le signal deSTD-603. Lire la bandemillivoltmètre CA indiqu11,5dB.Enregistrer leSTD-604. Liremillivoltmètrer 1.5d8.

Entrée de l igne( L I N E I N P U T }

,2dBv (0,55V)

signal de sur la bandela bande fier que le

CA indi ,2dBv (0,55V)

,a- de gauche "L"

de dro i te "R" )

OUTPUT)

ivoltmètre CA

z sur la bandevérifier que le

en $en),ce

nors Seru,ce

ModeBande d'essai

Millivoltmètre CA

EnregistrementSTD.6O8A. STD.6O3STD-604TP2 (canal de gauche"L") et TP2 (canal dedroite "R") de I'en-semble DOLBY333H2, - 10dBv(316mV) à I'entrée deligne LINE INPttT

3æn, -i 3 1 6 m v )

Utilisation de STD608A(oN) (type B/C)

Signal d'enhée

Procédure1. Placer le sélecteur de bande TAPE SELECTOR

sur la position NORM.2. Régler la commande de niveau d'entrée INPUT

de manière à ce que le millivoltmètre CAindique - 5,2dBv (0,55V).

Réponse on fréquenceUtilisation de STD608A auec Ie circuit Dolby hors seruice( o F F )Le canal de droite eot compenté de - IdB à 63Hz et de-0,5d8 à l25Hz, à cauae de I 'effet d' ioolement

Réponse en fréquence globaleUtilisation de STDîOSA auec le circuit Dolby hors service(oFF)

Utilisation de STD603 auec le(oFF)

Fig. 12-7 Réglaç du nive dh'.sir,...,.nrn,I

azuz pg1r, 333u, 2kqt41,

25OHz 6 ,3kHz l 2kHz

3 9

Utiliætion de STD6O3 avec le circuit Dolby en seruice(ON) (type B/c)

4dB

7dB

125H2 333H2

Utilistion(oFF)

de STD604 avec le circuit Dolby hors seruice

Utilisation de STD6O4(oN) (type B/C)

auec le circuit Dolby en seruice

Fig. 12-8 Réponse en fréquence

Canal gauche (Ll

Panneau arrière

Canal droit

Réglage de biæ du VR20B(canal droitl

P6Réglaæ de bias du VR1O3(canal gauche)

Régtage du niveau de reproduction ffi t6ùMontage principal du VR1O1 (canat gauchel |\/

Y

Régrase du niveau d,enregisrremant /* ljIffiji [i"":''.ï.reproductiondu vR202 (canat droit) g ll l l IRéglaç du niveau d'enrogistrementdu VBl02 lcanal gauche)

SkHz

Fig. 12-9 Points de réglage

Panneau avant

Procedimiento

1. Ajustar el control del nivel de entrada (INPUT)de modo que el milivoltfmetro de CA indique-27dBv (44,6mY).

2. Grabar las sefrales de 333H2 y 6,3kHz de laSTD-6084. Reproducir la cinta y ajustar laVR103 (canal izquierdo) y VR20B (canalderecho) de modo que la diferencia entre la.sdos sea de *0,5d8t0,5dB.

12.6 AJUSTE DEL NIVEL DE GRABACIôNPuesto que e3te ajuste determina el nivel del sirtema

Dolby durante la grabaciôn, deberâ realizarse con precisiôn.

grabaciônSTD.6O8A, STD-603,STD-604TP2 (canal izq.) y TP2(canal der.) del conjuntoDOLBY333H2, - 10dBv(316mV) a LINE INPUT

Procedimiento1. Poner el selector de cintas (TAPE SELECTOR)

en la posiciôn NORM.2. Ajustar el control del nivel de entrada (INPUT)

de modo que el milivoltimetro de CA indique- 5,2dBv (0,55V).

Respuesta en f recuenciaEmpleando la STD-608A con el sistema DOLBY NR en laposiciôn OFFSin embargo, se compensa el canal derecho en - ldB a 63H2,y -0,5d8 a 125H2 debido al efecto aislante

63Hz 2S0Hz 333H2 lkHz 1 0kHz

Respuesta en frecuencia globale

Empleando Ia STD-608A con eI sistema DOLBY NR en laposiciôn OFF

Grabar la senal de 333H2 enproducir la cinta y ajustarizquierdo) y Ia VR202 (modo que el milivoltimet

11 ,5dB.Grabar laReproducirvoltfmetro11,5d8.

- 5,2dBv (0,54V).Grabar la seflal de 333H2 la STD-603.Reproducir la cinta y el mili

(0 ,55V)voltfmetro de CA indique

sefral de 333H2 la STD-604.que el mili-la cinta y

de CA indique Bv (0,55V)

Entrada de l inea( L I N E I N P U T }

, a '

o--

abaciônFig.12-7 Ajuste del n ive l l

3 .

4.

5 .

D-608A. Re-R102 (canalderecho) deCA indique

quelBv

AjusteModoCinta de prueba

Milivoltimetro de CA . . .

Senal de entrada

Empleando la STD-608A con elposiciôn ON (tipo B/C)

BY NR en lo

4dBL

L

63Hz 125r.

Empleando la STD-603posici6n OFF

63Hz 125H2

Empleando la STD-603posiciônON (tipo B/C)

333H2

con e l

1 k H z333H2 6

con el siste

H z

Y N R en la

LBY NR en 1s

-r4dBt

5dBt

k H z

63Hz

I 1P2(cana l i zq . ) ,

I

' 2kYz125H2 333H2 6 .3kHz 12kHz

Empleando la STD-604 con el sistema DOLBY NR en bposiciônOFF

Empleando la STD-604 con el sistema DOLBY NRpoeiciôn ON (tipo B/C)

en la

Fig. 12-B Respuesta en frecuencia

Panel posterior

Canal izq. (Ll Canal der. lR

Ajust€ de la polarizaciônde VR203 (canal der.)

Conjunto principal

/t=nfl:i\t t I t t l t . t l

/ET PIAjuste de lapolarizaci6nde VRIGI(canal izq.l

Aiuste del nivel de grab.de VR102 (canal izq. l

Aluste delde VR201

q@nivel de reproduc.(canal der.l

Panel frontal

Ajuste del nivel de reproducde VRIOl (canal izq.l

Aiuste del nivel de grab. fâsde VR2O2 (canal der.l 19Ë

SkHz

R.O. (Salida degrabaci6nl(canal izc.lg

R.O. lSalida deVR403l grabaciônl TPl (canal izq.)

^ | VR503LJ rTPl (canal der.l

Fig. 12-9 Puntos de ajuste

f.-r · (3o to 17,q)0 hz 13 db) (0 db recording; 30 to 12,5o0 hzl more than 50 db b type more than...

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