manual: ct737markii sm pioneer en

() PIONEER The future of sound and vision.

Setvice ORDER NO.

ARP1731 eg

The above Mustation shows the model CT-@ia.

STEREO CASSETTE DECK

T=73 7markil CT=73 7markilS CT—737 MARK I AND CT-—737 MARK 1S HAVE TWO VERSIONS :

Type CT -737 CT —737 Power requiremant Export destination

*xChange the primary wiring of the power transformer.

¢ This manual is applicable to the HEM and HB types.

¢ For the CT-737 MARK I/HB and CT-737 MARK IIS/HEM types, refer to page 43.

¢ The CT-737 MARK HIS is the same as the CT-737 MARK II except for the color.

¢ Ce manuel pour le service comprend les explications en frangais de réglage.

¢ Este manual de servicio trata del método ajuste escrito en espafiol.

CONTENTS 4. “SRECIBIC ATIC NS sresciinore anicisiins iotesecerasaicavaveuas y,

2 -DANEL “FACIL ITIESonistoiiartassnen teed en secasiecemeceted eras 3

3. EXPLODED VIEWS AND PARTS LIST---:-:: 6 A. . BRC ING cecstes te secsems catecstatiecsines destegn teeta aaeynes: 12

5B. SCHEMATIC DIAGRAM cectescsecscessccesceerereeeeres 13

6. P.C. BOARDS CONNECTION DIAGRAM :::- 17 7 ELECTRICAL. PARTS LIST tcisscsesccstecscscqusecns 25

So AGS IIS TIAEN TS secs sesssieds sceaseslzideeaetccatesaessinss 29

BEC AG eS wsniieiatesictnncgseidapesioricertvesadianmares 33

BAIS TES creirccieiaiee inne ieee: 38

9. FOR CT-737 MARKI/HB AND

CT-737 MARK DS/HEM TYPES>:+++:+e 43

PIONEER ELECTRONIC CORPORATION = 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, California 90801 U.S.A. PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive, Markham, Ontario L3R 8E3 Canada PIONEER ELECTRONIC [EUROPE] N.V. Keetbergtaan 1, 2740 Beveren, Beigium

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911 © PIONEER ELECTRONIC CORPORATION 1989 SA APR. 1989 Printed in Japan

CT-737MARK II

1. SPECIFICATIONS Systems weed ew eae ee er ec ners rerenane 4 track, 2-channel stereo

HeadS sss cccr cect crete sete renee Recording and playback head

Hard permalloy recording/playback combination head:----- x 1 Erasing head:(Ferrite head) x 1

MotorS «ccc ccc crest eter eenees DC servo capstan motor xX 1

DC reel motor x 1 DC auxiliary motor x 1

Wow &flutters:sccr ccc ccc terete eset tence 0,026% (WRMS)

+ 0,07% (DIN)

Past winding time =*s* sect sssserses* Approximately 80 seconds (C-60 tape)

Frequency response (-20 dB recording) Metal tape Sew Ole eee a Sete wee 6a e 6 eae Cee 15 Hz to 22,000 Hz

Chrome tape sere creer reece sree ereees 15 Hz to 21,000 Hz

Normaltape -ccsssce streets tece tess 15 Hz to 21,000 Hz

Signal-to-noise ratio DOLBY NR OFF weer eevee erase ene ene reeeeses More than 60 dB

Noise reduction effect DOLBY B-type NR ON ----esees: More than 10 dB (at 5 kHz) DOLBY C-type NR ON -----+-+:: More than 19 dB (at 5 kHz)

Harmonic distortion -++++ssrrrttereeee No more than 0.6% (0 dB) |) eee LINE: 58 mV

(Input impedance: 56 k 2 ) Output get ae ee ee a ee eC ee a ee ee ee a ee ee LINE: 316 mV

(Output impedance: 5.2 k 2)

Headphones: 0.8 mW

(Load impedance 8 2 VR Max.)

Subfunctions 2-mode Counter (4-digit electronic counter)

Meter Range Selection (wide/expanded range) Auto Monitor Function (TAPE/SOURCE auto selection) Power Eject (OPEN/CLOSE) Music Search (over + 15 selections)

Tape Return/Return Play Headphones jack (with volume control)

Bias contro! Rec calibration level control

MPX Fiiter Auto Space Recording Mute Auto Tape Selector

Playback/Recording timer start function Dolby B-type and C-type Noise Reduction Systems Dolby HX Pro system

FL Level Meter Peak-hold function (15 + 1 segments) eoeee@e¢@ee8#% %¢ @# ¢ @¢ @¢@ # @

Miscellaneous Power requirements -++-+++s+eeeeeeee AC 220Volts-~~, 50/60 Hz Power consumption PR SEEM Oe a ee SC eT RE er ee oe ee Ree oOW

Dimensions :+sssstseesreertes 457(W) x 133.5(H) x 372(D) mm Weight (without package) «+++ seer sere e eee rene ee eee a ale ore 7.3 kg

Accessories Operating instructions Poa ae a a ee ee ee er ee ee 0 1

Connecting role) (0 | i y)

NOTE:

Specifications and design subject to possible modifications without

notice, due to improvements.

2. PANEL FACILITIES

Gyles /,cen STEREO CamseTTe o8cx CT-9e

@ POWER switch Turns the power on and off.

After the power is turned on, the dotted lines in the level meter

flash for approximately 4 seconds until the circuits of the unit have

stabilized. The unit will not operate during this time.

@ Cassette door OPEN/CLOSE button

NOTE: If the cassette door is closed while the unit is turned OFF, and the

power is then turned ON, the cassette door may open and close

after pressing one of the operation buttons. This occurs when the

microprocessor resets the door mechanism to its initial state and

does not indicate any malfunctioning of the unit.

@ COUNTER selectors RESET: Resets the counter indication to “0000”.

MODE: Each time this button is pressed, one of the following three modes

is set in sequence.

e Normal tape counter ¢ Time counter (displays the elapsed playback or recording time) ¢ Remaining time counter (displays the remaining time of the

tape). CT-91a, CT-939 only. e Two modes for CT-737.

The above illustration shows the model CT-91a.

@ TAPE CAPACITY selector (Not provided in the model CT-737)

To indicate the correct time value in the remaining time counter

mode, this selector must be set in accordance with the tape used.

i Cs0 — Csol—~ C60 —> 4

© TAPE RETURN button

This button is used in the tape counter mode to fast forward or

rewind the tape to a point near the counter reading “0000”.

© DOLBY * NR selectors ON/OFF: Used to turn the Dolby NR Systems circuits ON or OFF.

B/C: With the ON/OFF switch in the ON position, Dolby B-type NR or C-type NR can be selected with this switch.

*

e Dolby noise reduction and HX Pro headroom extension system manufactured under license from Dolby Laboratories Licensing Corporation. HX Pro originated by Bang & Olufsen.

¢ ‘DOLBY’, the double-D symbo! D0) and “HX PRO” are trademarks of Dolby Laboratories Licensing Corporation.

@® MPX FILTER switch

Set ©: switch to ON when recording FM broadcasts with one of the Dolby NR systems.

REC LEVEL control

@© REC BALANCE control

@ TIMER mode selector REC: Set to this position for timer recording.

PLAY: Set to this position for timer playback.

OFF: When the timer is not to be used, set the selector to this position. (Normally leave the selector in this position.)

@ PHONES LEVEL control Used for adjusting the volume when listening with headphones.

@ PHONES Jack For connection of standard stereo headphones.

@ Cassette door Open and close this door by pressing the OPEN/CLOSE button for insertion or removal of the tape.

@ Rewind (<<) button Press this button to rewind the tape. Also, this button is used for music search during playback.

@® Stop (mi) button

@ Play (») button

@ Fast forward (»» ) button Press this button to fast forward the tape. Also, this button is used for music search during playback.

@ Recording (@) button

When this button is pressed, the unit is set to one-touch recording pause (recording standby mode}.

@ Pause (§J}) button

The tape transport can be momentarily stopped by pressing this button during recording or playback. Press the button again to

restart operation. The button does not operate during fast forward or rewind.

@ Record muting (Q) button

Press this button to create an unrecorded space during recording.

@) METER RANGE selector Selects wide or expanded range for the level meter.

@ MONITOR selector | For monitoring the sound during recording, this switch can be used to switch between source sound and just recorded sound.

Normaily, however, the unit will automatically select tape playback sound after playback has started or the just recorded sound after recording has started.

@ REC CALIBRATION BIAS control

It is possible to adjust the bias according to the tape used and the source to be recorded.

@ REC CALIBRATION LEVEL control The AUTO TAPE SELECTOR of this unit matches the recording

characteristics with the tape used. Proper adjustment of the REC CALIBRATION LEVEL control permits optimum use of the given tape characteristics for even better recording results.

OPERATING DISPLAY

SC we

PEAK HOLO

@ Counter

* The counter has three display modes.

e If the cassette door is open, the message “OPEN” is displayed.

¢ During music search the number of selections is displayed.

@ TAPE RETURN Lights up during tape return operation.

© Tape transport modes “<q: Lights up when rewinding the tape.

Pm : Lights up during playback, playback pause, recording

pause and recording. Flashes during music search.

PP: Lights up when fast forwarding the tape. Hi : Lights up in the pause mode.

@ MUTE Flashes and lights during recording mute operation.

© REC Lights up during recording.

© Warning zone Changes according to the type of tape used and to the selected meter range.

@ Monitor source

TAPE : Recorded sound

SOURCE: Original source sound

Scale for wide range

mH — ile

CEP RG Ce EHereaaneeneoans

BPeseoeseescaacaaaeensenesea

| Hx PRO “ DOLBY NR & aley | ere FILTER ar

CT-737MARK II

TAPE

SeARARERHKHHSH SDE SESSA RFOTHaHEHnAeserecasfesagerneseoeeseean

One SOCK HSSSEAHSSSE DTS SES COKE HAHERESHEHEH RE OCRAHRAAEEKAEE ES

18)

© Level : Left channel

| R | : Right channel The {0 marks indicate the reference level for the Dolby NR Systems.

@ REMAIN (Not provided in the model CT-737)

Lights up when the remaining time counter mode is selected.

@ LARGE HUB (Not provided in the model CT-737)

Lights up when the TAPE CAPACITY selector is pressed in the

remaining time counter mode, and the Large Hub mode is set.

@ TIME COUNTER Lights up in the time counter mode.

@ DOLBY B-type NR/C-type NR indicates the selected Dolby NR Systems, B-type or C-type.

@ 0 dB position for expanded range

® MPX FILTER

Lights up when the MPX FILTER switch is pressed while the Dolby NR Systems are ON.

@® 0 dB position for wide range

@® Tape type The unit will automatically detect and display the tape type

(NORMAL/CrO2/METAL) of the cassette inserted. When no tape is inserted, METAL is displayed.

@® Scale for expanded range

CT-737MARK II

3. EXPLODED VIEWS AND PARTS LIST 3.1 EXTERIOR

NOTES : ¢ Parts without part number cannot be supplied,

¢ The A\ mark found on some component parts indicates the impotance of the safety factor of the part, Therefore, when sure to use parts of identical designation.

* Parts marked by “@” are not always kept in stock, Their delivery time may be longer than usual or they may be unavailable.

replacing, be

Parts List of Exterior

Mark = °

o_o, COMND OR WH |

PP PPP

17 18 19

20

Part No.

CM—22B PDG1003 REK—099

REK— 102 RTT1052

SLF-401C DBK— 106 PNB1109 RBL—0O59

REB-—223 REB1038 REB1057 REE1010 AMRi1159

RAC1337

RAC—668 RAC1203 RAC1204

RAC1232

RAC1206

RAC1262

RAH1184 RAP1003 RNK1284

RNK1301 RXA1158 © RXA1160

RAH1197 RAH1198

RAH1200 RAH1201 RAH1314 RXX1115 RXX1092

Description

Strain relief AC Power cord Fuse

(FU401, FU402/800mA) Fuse (FU403//1.6A) Power transformer (T1)

Diode (D11) Mounting plate Absorber B Cassette plate spring eearveaeeree

Cover cushion (D) Stablizer B Rubber spacer (A) Label Leg assembly

Headphone knob

(PHONES LEVEL, REC CALIBRATION)

Slide SW knob A CTIMER) Power button (POWER) Push button

(DOLBY, MPX) Counter button (COUNTER)

Button

(<3, >, >, @, 11, 0) VR knob B

(REC BALANCE) FL filter Under escutcheon Door

Button holder VR knob assembly (A) Monitor button assembly (METER RANGE, MONITOR)

Door lens FL panel

Side panel (L) Side panel (R) Door panel Cassette plate assembly Bonnet

Mark No.

105

106 107 108 109 110

Lr 112 113 114 115

116 117 118 119 120

121 122 123 124 125

Part No.

RXX1207 RXX1113 BBZ40PO80FCC BBZ30PO60FCC IBZ30PO80FCC

BBT3SOPO80FZK

FBT40PO080FZK BBZ26PO80FZK

Description

Front panel assembly Door assembly Screw Screw Screw

Tape mechanism unit P.C.B stud Power transformer sheet Tape mechanism sheet Main chassis

Panel stay

PC support Monitor button Monitor button mold Front panel

Cassette panel Rear panel Headphone unit Input VR unit Main unit

Timer unit Power switch unit FL unit

Switch unit PB Dolby unit

REC Dolby unit CAL VR unit P.C.B base P.C.B holder (H15) Name plate

* Disassembly the mechanism Exterior unit, remove the bonnet and

front panel first.

4

3.2 MECHANISM UNIT

CT-737MARK Il

3.22 Part List of Mechanism Unit 4, PACKING

86155, DNn, 1 te Smal AE Ee DELADI NS nL DANO VETe AIS SALLAAG tt oh cement neremts hr es aaeenttay oer oe some cee ats

tna ant a eh cde Se Rn Shea eda eet a

Layrernanan tate Pm eile tLe fet SAAS ahah ean bee eet tee a oe

SSS oe “OB A ee bn AT nna RICE EEN A NR een

_Mark_ No. __ Part No. _ Description —_ _Mark_ No. __ Part No. _ Description Parts List , A

1 RSF-031 Micro switch 56 JGZ20PO25FMC Screw aa 2 RSX-059 Rotary encoder 57 PMA26POS50FZK Screw Mark. Nov 2 Part Nos — :c..Desenption:: -—_ 3 RXM1016 Capstan motor assembly 58 RBF-—030 Oil stopper 1 RHA1021 Pad (F) 4 RXM1018 Reel motor assembly 59 RBF-—O69 Thrust washer (A) 2 RHA1022 Pad (R) 5 RBA-064 Step screw 60 RBF-076 Slider washer 3 RHG1126 Packing Gase

,; , 4 RHX-034 Sheet 6 RBL-044 Thrust spring 61 REC-371 Binder 7 REB-408 Rubber cushion 62 REF—022 Steel ball (4 3) 5 RDE—010 Connection cord 8 RBL-028 Pinch spring 63 REF-—023 Steel ball € 4) oa a 9 RBL—030 Pinch thrust spring 64 VCT30PO60FZK Screw 6 RRD1062 oo DSi

10 REB-501 Capstan belt 65 VCZ26PO80FMC Screw SB wedigneeenen ee

11 RXA1262 Flywheel assembly 66 WA26N070W040 Washer + RREIOOG Pa a 12 RXB-362 Metal holder assembly A 67 WA32D080D050 Washer ae HP eee a 13 RXB-876 Pinch roller arm (R) 68 YE20FUC E ring nglish“German)

assembly 69 YE25FUC E ring

14 RBH1213 BT spring (C) 70 YE30FUC E ring 101 Connection cord assembly 15 RBL-—032 BT spring (B)

71 YS24FBT Washer 16 RBL-—033 Idler pressure spring 72 RXX1055 Power motor assembly 17 RNK-815 Reel shaft cap B 73 RXX1210 Head base assembly 18 RXB-751 BT disc assembly 74 RPB1002 Erase head 19 RXB-874 Reel base assembly . 20 RXB-875 Take—up idler assembly 101 Earth lead wire assembly 101

102 R/P head 21 RBF-0O65 Polyslider washer 108 tt ees 22 RBL-—037 Head base spring 104 Connector unit 23 RBL-038 Brake spring 105 Power motor 24 REB-502 Drive belt 25 REB-511 Brake shoe 106 Reel motor mounting plate

107 Flywheel holder 26 RNL-723 Brake 108 Thrust holder 2? RNL-729 Cam gear 109 Mechanism chassis 28 RXB-884 Side cam gear assembly assembly 29 RBL-045 Position spring 110 Pressure arm (R) 30 RBK1021 Half pressure spring

111 Adjustment nut 31 RBL-039 Eject spring 112 Head base pressure spring 32 RBL-040 Half pressure spring 113 Head adjust spring (C) 33 RBL-—041 Rec arm spring 114 Hight spring 34 RBL-042 Detect arm spring 115 Head base 35 RBL-—-043 Lock lever spring

116 Sub head base 36 REB-447 O ring 117 Brake lever 37 RNH-184 Cord clamper 118 First pulley 38 RNL-733 Rec detect arm 119 Gear chassis assembly 39 RNL-734 CrOz detect arm 120 Pinch base assembly 40 RNL-735 Metal detect arm

121 Pinch lever assembly

41 RNL-739 Piston 122 Gear base assembly 42 RNL-740 Cylinder 123 Second pulley assembly 43 RNL-741 Lock lever 124 Pocket frame 44 RNL-742 Collar 125 Door arm 45 RNL-849 Pocket (L) 3

126 Eject lever

46 RNL-850 Pocket (R) 127 Shift shaft assembly 47 RBF-057 Polyslider washer 128 Door frame (R) assembly 48 BBZ26PO80FZK Screw 129 Door frame (L) assembly 49 BBZ30PO80FZK Screw 130 Rec switch unit 50 BCZ30PO60FMC Screw

131 Tape selector unit

51 PMZ20PO80FZK Screw 132 Sensor unit (A) 52 BMZ23P100FZK Screw 53 BMZ26P030FZK Screw 54 ee 6 ee

55 BMZ30PO80FZK Screw

CT-737MARK II : : zs 2 6

~ 5B, SCHEMATIC DIAGRAM MAIN UNIT iC7 BA335 0401-0404 1ODF2FA9

MAIN UNIT PB DOLBY UNIT

: IC6 BA6138 L204, 1205 LRAI21K

aa

'

:TA

iC 1 M5220L L201, L202 RTD1020

10140172) a ar el

1013 M5233L L203 RTD1021

@51,052: PB MUTE e272} Q53,Q054:LINE MUTE cs R57 10/50 3.9k

i IC4 p PC1297CA VR1i, VR2, VR201, VRTB6VS103

: IC3, IC, IC8 M5218L V203, V204

Q1, Q2,Q103-Q112 OTCI14TS VR3, VR4, VR101. VRTB6VS223

055, Q202, Q203, DTC124ES VR102, VR301, VR302 on

A 1C21 NJM78M05A L107, L108 RTF1017 Ld ae —

7 : ,

1C20 NJM78M12A L101—-L106 RTF1022 - (WP) VRS;

a Tee betsy = —

C14 PD4148B L501 | RTF1068 ; ay Ee ceoreey

ic12 TC40508P C427 RCH1010 MECHA UNIT (1/4) ;

{>

1C2 TC4066BP C407, C408 RCH1013 ad : ay39.4

- R7 ' sa 7 ; 4 ol 3

IC7: MS MIXING AMP

: 22k o P a Ls 8

oa. <) LT 23 | tes

Q208-0210 VR202 VRTB6VS473 HEAD

a550—0553 DTA114ES R550, R551 RCX1009 |

R554, R560 RCX1010 VR1: PB EQ ADJ

Q201, 0405 2SA1283 Q204, 0212, 4501, 2SA1309A R591 RCX1020 Q504—0506, Q554 X550 vss1014

JOR EES OME ic14:

— Q508 2SA936

PB DOLBY B/C

} Q402 2SB950 C7, C8, C15, C16, RCH1020 | Q1,Q2:120uS/70uS SWITCH PROCESSOR CX20187

| Q205, 0206 28C3243 C126, C127, C421, | L.603,.L604 RTF -162

C22

:

Q211, 0301, Q302, 2SC3311A

Se La a 320 «BV

Q502, 0503; 0507,

(o301,0302----0N Ic

Q509. 0555, 0556

air50 47750 pole

| Q401 2801276

fon FP93 otf 5

| a51-054, Q101, 2$D1302 Jui-1, vR2: PB EQ ADJ

Q301,0302

0102. 207

a Y _

METER RANGE

: 0407 HZ5CLL . pa

D415 MTZ13B nee J

: aa

0412 RO2.7EB1 D409 1B2C1—-LC2

180p

D410 1B2Z1-LC2 a

tok yesetav2 3

D411, 0413, 0414, 1SR35-—100A

B 2502 0201-0211, 0405, 188254 D406, 0501. D550, D551 D552, DSI

c10 10/25 2.2k c306 C308

4.7/50 4.7750

1. RESISTORS :

Indicated in 2, 1/4W, 1/6W. +5% tolerance unless otherwise

noted k:kQ,M:MQ, (FY): £1%, (G). 2%. (K);+10%, (M);

+20% tolerance.

F 2. CAPACITORS : CAL VR UNIT(1/2)

J Indicated in capacity (uF) “voltage (V) unless otherwise noted =

1

Sar.

Q107—O112: C3: REC EQ AMP Q103—-G106: Fs

i Indication without voltage is 50V except electrolytic capacitor. vayzot S J34 ‘ ah

REC EQ SELECT REC SENSITIVITY SW 3

i

k 0 -

: ce

i

VRIO1 : REC

3. VOLTAGE CURRENT: | Caan Tee

@209-@211: BIAS ADU AMP ieee

4 , ; ¢ F Ld ic4(i/2)

Q203 ,Q204,Q212: REC BIAS ON/OFF L107,108: RTFIO17

i TL]: 0¢ voltage (V) at no input signal. VR4201 2 BIAS N34

; , : ’ ° R105 ae

:

tk

‘ 4. SWITCHES (Underline indicates switch position) -——

MAIN: UNIT VR1201 RCV1007

$301: DOLBY NR ON — QFF

$302: DOLBY NR @-C $303: MPX FILTER ON-OFF

SW UNIT $901: OPEN/CLOSE

CHA UNIT (2/4)

s902: COUNTER RESET ME —

$903: COUNTER MODE

C223 VR203:

$904: TAPE RETURN See BIAS ADJ

| 5905: METER RANGE Ls cN2 cats

suka

$906: MS (REW) 4 wr oafoqt— ‘S$

‘

- 500

VR202 :

$907: STOP ® ras > 1 Tiel .

BIAS ADJ (METAL)

908: PLAYD nhl p=[—Fezer seovsoo TT

aia

5909: MS (FF) b> an A OE EER ES AR ORT (EN RT A ee

; C $910: REC®

L203: 81AS F ADU

$911. PAUSE

RTD1021 __ £203

$912: REC MUTE® $913: MONITOR AUTO

TAPE SELECTOR UNIT $2: TAPE SELECTOR METAL-CrO2

$3: TAPE SELECTOR NORM

BIAS ADJ

TIMER UNIT

OR ES

} $1101: TIMER REC~OFF-PLAY

IC4 (272)

REC SW UNIT $1: REC INH ON-OFF

MECHA UNIT

=

$11: DOOR OPEN-CLOSE

eRe teaan ae

Cr02,NOR:NOmA

POWER SW UNIT | .

$1201: POWER ON-OFF AT fs | pe Q205,0206: BIAS OSC Pe the edn ot

~~ EE]

eek 10/50

Q201,0202 : REGULATOR 32/2)

METAL crOe2

5. OTHERS

—— PLAYBACK SIGNAL ROUTE Rez2

ant Cee Neer a L204, 205: LRAI21K Q50!~@504: CPU RESET

mm eee we RECORDING SIGNAL ROUTE (172)

Moser 8401,0402, IC 8 : REGULATOR 19s OS RE Oss

Q101,Q162 ;:REC MUTE

0: Adjusting point. 5

{C4: DOLBY HX PRO

The A mark found on some component parts indicates the ar

importance of the safty factor of the part. Therefore, when

replacing. be sure to use parts ot identical designation.

-emarked capacitors and resistors have parts numbers.

POWER SWITCH UNIT A, TTS omen A A POWER SW UNIT

CN37 Fu4oi TBOOMA/ 250V

$1201 rsA—063 A C1201

ie aon This is the basic schematic diagram. but the actual circuit may

vary due to improvements in design.

mp C421 1OO/10 *& ct201

0.01/250 AL 220/240

REC «15.6

HEM, HB type Line Voltage Selection ee

STOP: 18

AC POWER CORD

ey C422

Line voltage can be changed with following steps. pene ioee en aaa A waste

1. Disconnect the AC power cord.

D 2. Remove the Bonnet case. |

| 3. Change the connection of the power transformer ; orw FU403 ¢404

lead wire. T1.6A/250¥ Too

| 4. Stick the line voltege label on the rear panel. ; orn | 2 ‘i | A

| Part No. Description ; weak | ‘°

| AAX-193 220v label HEM 220V ——— |

:

| i :

IC20, 121,405 : REGULATOR

AAX-192 240V label HB 240V.. -~7" ae ee

—

A

IC7:MS MIXING AMP

Ic?

1 12 10

FL UNIT LD

1C901 —-1C903 LC7570 9901 188254 IC901—iC903: FL DRIVE FL tube RAW1018 Ic903

JA101

LINE OUTPUT

a a a OoO.0 o

MIN

COT TUNUE CUUOE MEEEG RUUD ORT

o e

Tine COUNTER] CHT AMUN TH HHOHY HUEC HAITI a8 -0O

SOURCE

-86 -4 -2 0 +£200+4 +6 +8 +10 +12

OT CE RHOT OSES DOSED HA EO DHRC DEORE CEE SESE SEES ER EEOED e 2 Gees au eeeee see oe

POCO OOO EE Deo Oe REDE COTE HO ELE CED ROO EEEOH ONES OEE

UU UUOUE DUAUE ATEUL SHEE SEDEE DODGE GQNNE TTEDE TUTGE Tee C352 ‘ : - ° $ 4 7 § ae

-4 -3 -2 -1 +1 +2 DW +4 +8 +8 +10 +12 +14 +1 2 HEADPHONE UNIT povey we = CE ICE Ld C353

» R352 LR3S3 20.47 DOL. 8 1c16472) 150 2 560k: " . so, 30) [ors \s5] eae Tpuu Noses won! R372 R375

10k 4.7

C305 C307 ' 4.7/50 4,7/50

R317 R318 4.7k .

C309 2.2/50

R316 270k

ICG: x2 FUNCTIONAL SUPPRESSION AMP $303 ! MPX FILTER VR301, VR302 |

METER LEVEL ADJ

c306 c308s 4.7/30 47/50

72)

ae 2 ened 7 vn _ Cee: 1 REC Lever aouin) & REC DOLBY UNIT cee)

mien) Da R105 R104

1k 1K N72 a]

sR107 “ATK CN73 7 zee

2403

J73

=

iP;

tl ‘

i ae :

rf i OTP L 9701-0704: 15 CX20187 i "90K ecies |

MPX FILTER ON/OFF 791-0704 DTC114ES y eo L701, L702 RTF1005 ‘| Ee ‘oon F701, F702 RTF— 1066 ui

Q550-0552: P MUTE DRIVE (ey) Ail

“F101,Q102>REC MUTE

C306 0.01 1C10,Q509:REEL MOTOR DRIVE

R529 ik

1€10 {C9 ASSIST MOTOR DRIVE CS07

PLAY .3.3 0.047 2 FF/REW :8.3

1 R528 1k

?

CNI4

XGULATOR

Rn, | P

CONNECTOR UNIT (1/72)

VRBO: PHONES LEVEL

R806 J10(2/2)

7 see | REC SWITCH R808 S60 } OO — ——— {Ok MECHA UNIT (3/4) UNIT MECHA UNIT (4/4)

$1 D1 GP1A51HR HALF IND RSG—143

a IC16° DW 4

1€16(2/2) HEADPHONE AMP

C803, 804: RCH1020 1C16 M52178L

vio" sovieis (REC INH SW) (DOOR Sw) S10

st RSF-—0O31

rec 7 Y open? Y ° CONNECTOR UNIT (2/2)

RCS1005

RCV1021

Ss a eo INPUT_VR UNIT =a R851! REC LEVEL

VR@S2:REC BALANCEL j25

C12: BUFFER wi iC13:

ee 0554-0556: METER RANGE i : = COMPARATOR PB MUT ; 33

REC MUT Q553: MONITOR DRIVE Li MUT

ia ae a ae Eee

& 2 7 Ret | 7 oe : we LY TT ree Se

s

METER

SENSING § - ae < = SENSING T2 S%e ie Sy z Eu a Cs FRrav-o fT PP see eas ae = & BB SENSING T1 W=e-FFSPtwCOngwwwwn sv Bi, Fws N ee 3 3 ial @emoeerrdo gndcdeadadaeunvxe errr aaa x x“ x 8 88

RESET

POWER OFF TT

ic SLOW

IC tf: DECK CONTROL

ROTARY

Aele ee, Ae dea SH

ac Ra cNts v8 { 2 d ENCODER ; fo ; sus

| ig . i SEL LTP EE EET IE TE EE TLE I = 2 ~- l | o—tta SWiTCW UNIT __ FFA TIMER UNIT

PLE. . Ji2_ fc l= i | 9 3i6 oo] S1101 RSHIO1E

et it |

bs A a de pa Pe S301 O ° | R904 R903 at_! | | TIMER |

R906 |R907/R90:] R905 10k R902 3k a 7 3 pO : S$912{ $913) $905 $903/3902] $908] Ss04/ 24k | 10k et 3c i

I ! | ! wlgendgoclpecgeedg Peja eos

RECQ fF 9 u O PLAY OFF |

ae

sw UNIT $901-S913

10

RSG—155

o 12

: | . ™ . CT-737MARK II

Part name

a «o[Y

Te : 1

or = ALA D S$ G SG OD SG

ci Se] me

a ae

ane

8 oo —

(¢ nes Cee

tne ol fF Lo Inductor

———LINE ——

OUT IN

REC DOLBY UNIT LHL ANOLON OE OEE ET INTER LOOSE IONE SER

P.C.B. pattern diagram| Corresponding part indication symbol

Fy B. a

eke ates Lets Le

si ™

Se NG

f | l

VR102 |Q507

Ceramic capacitor

Mylar capacitor

Styrol capacitor

Electrolytic capacitor

(Non polarized)


(Noiseless)


(Polarized)

ingen a be Sarees

We Electrolytic capacitor

Q205 Q206

(Polarized) tee ye i Q201 Q202 Ht

Q1 Q2 ay Power

Q203 i aN capacitor

Q207

Semi-fixed resistor © )

aay 0204

Q212 heel BALANCE Q111 107. Qi10g MECHA UNIT(3/3) Q109 Q110 @Q112 Ss eas PB HEAD

L R 1C1

Q209 | } | oD wae |

oe ibe REC CALIBRATION a | LEVEL

re ing

= | Ss ee C AL VR 1. This P.C.B. connection diagram is viewed from the parts mounted side. U N [ T 2. The parts which have been mounted on the board can be replaced with

those shown with the corresponding wiring symbols listed in the above Table.

The capacitor terminal marked with (J) shows negative terminal.

The diode marked with O shows cathode side.

5. The transistor terminal marked with (_] shows emitter.

w

aapauuiahealnasisamapueeeninmmmiimeene tcc nnn nrc ar COPA SN AO ANNO OEE LAOS LATOR RANA ASEAN MANE NIT H

>

or rt \?) a

L-

GO) L-

= <x

ee A

—

=—— 101

TUO vl

THWU YE8jod 93h ing side iew from solderi eV

rrro

TO2oO] SOTAV

orso SOSHV

re@e@o Steo Ecco

foro + 380cO

80CO

St2| coco

a0sO coso

SstrroO Oro edo

poOtO Edo

a0to coro

so0ro YOoro

soro

TIVU Y8tOod 84

(E\E)TIAU AHOSM

TIVU AV TUSUI

03n SONAIAS

Of

2Als vs m re) a < s. w 0: < ae oO s

J3Vv3

rt St

21

HPV YANT\ ial

7, ELECTRICAL PARTS LIST

NOTES : ¢ Parts without part number cannot be supplied.

¢ Parts marked by “@” are not always kept in stock. Their delivery time may be longer than usual or they may be unavailable.

* The A, mark found on some component parts indicates the impotance of the safety factor of the part. Therefore, when

replacing, be sure to use parts of identical designation,

¢ When ordering resistors, first convert resistance values into code form as shown in the following examples.

Ex,1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by

J=5%, and K=10%), 560 Q 56X10! BG] cosceccccsvcceveccccnsccsesvecscscesccsoeressaneresusnessucererarsapeeencs RD1/4PS (5)[6}{1} J

47k Q 47X10? AT crrccevcavccrceccccrcscsnceasssenaesnsenscacnepecssessensnssesessesveeenes RD1/4PS (4}(71{3} 3

0.52 ORSresscecscesrceccennscsssnssasenscasenseasseesessrercnscnnssceneeaseaeseessasseese ees eeauees RN2H (O) RIE} K

192 > D waveccsccccccccccccccccecnsvoveresseesneccseceecsereeseesscesesnneseeessseaseeeeceosseneess RSIP (0}(2)[0} K

Ex.2 When there are 3 effective digits (such as in high precision metal film resistors), 5.62k 2 56210! 5621 stonessnececosscartecencnsecasanveanoesessssceeesensnacsensnsaneeseneees RN1/4SR (5](6)[2][a] F

Miscellaneous Parts Main unit

>

P.C,. BOARD ASSEMBLIES SEMICONDUCTORS

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

Main unit | IC7 BA335 Headphone unit ICS, IC10 BA6109 Input VR unit ICé6 BA6138 Timer unit iC1 M5220L. Power switch unit IC13 M5233L

FL unit A IC21 NJM78M0O5A Switch unit AN 1C20 NJM78M12A PB Dolby unit C11 PD4148B REC Dolby unit IC12 TC4050BP CAL VR unit IC2 TC4066BP

Tape selector unit | IC4 u PC1297CA Sensor unit (A) IC3, iC5, IC8 M5218L REC switch unit Q1, Q2, Q103-0112 DTC114TS Connector unit Q55, Q202, Q203, Q208-Q210 DTC124ES

Q550-0553 DTA114ES OTHERS

AN Q201, 0405 2SA1283 Mark Symbol & Description Part No. Q204, Q212, Q501, Q504—0506, 2SA1309A

Q554 A FU403 Fuse (1.6A) REK-— 102 Q508 2SA936 A FU401, FU402 Fuse (800mA) REK-—099 AN 0402 2SB950 AN T1 Power transformer RTT1052 AN AC Power cord | PDG1003 Q205, Q206 2803243

D11 Diode (LED) SLF-401C Q211, Q301, Q302, Q502, Q503, 2SC3311A Q507, Q509, 0555, Q556

Erase head RPB1002 A Q401 28D1276 Micro switch RSF-031 Q51-—Q54, Q101, Q102, Q207 2S8D1302 Rotary encorder RSX —059 os Capstan motor assembly RXM1016 Ay . D407 HZ5CLL Reel motor assembly RXM1018 A D415 MTZ13B

A D412 RD2.7EB1 Power motor assembly RXX1055 A D409 1B2C1—LC2 Head base assembly RXX1103 A D410 1B2Z1-—-LC2

ay Strain relief CM22B AN 0411, 0413, D414, D502 1SR35—100A

D51, 0201—D211, D405, D406, 1SS254 D501, D550—D552 D401-D404 10DF2FA9

CT-737MARK I

SWITCHES Mark Symbol & Description Part No.

Mark Symbol & Description Part No. C5, C6, C226, C413, C414 CKPUYB101K50 C211, C212, C303, C304 CKPUYB821K50

S$301-—S303 Push switch RSG1017 C123, C124 CQMA162J50

(DOLBY NR, MPX FILTER) C210 CQPA9125100 C1, G2 COSF181J50

COILS C427 (6800/25) RCH1010

Mark Symbol & Description Part No. C407, C408 (2200/25) RCH1029

L204, L205 LRA121K RESISTORS

L201, L202 (85kHz) RTD1020 L203 Oscillator coil RTD1021 Mark Symbol & Description Part No.

L107, L108 (2.2mH) RTF1017 VR1, VR2, VR201, VR203, VRTB6VS103

L103, L104 (5.6mH) RTF1022 VR204 (Semi-—fixed 10k)

L501 (0.15mH) RTF1068 VR3, VR4, VR101, VR102, VRTB6VS223 ; VR301, VR302 (Semi-—fixed 22k)

CAPACITORS VR202 (Semi-—fixed 47k) VRTB6VS473

Mark Symbol_& Description Part No. R550, R551 (22k x 4) RCX1009 | R554, R560 (10kx7) RCX1010

C219, C220 CCCSL101K500 R591 (11k) RCX1020

C505 CEANP4R7M35 R577 —R581 RN %PQODCKIOIF

C503 CEASR22M50 R513 RS1LMFO10J

C353 CEASR47M50

C411, C412, C424, C428, C431, CEASIO1M25 |

C432 R222 RDY%LFO105 R203, R212, R213, R401, R402, RDYPMFLILEIJ

C201, C202 CEAS221M16 R408, R414, R415

C425 CEAS102M25 RQ, R10, R57, R58, R63, R64, RDY%PMOILE

C309, C310 CEAS2R2M50 R101, R102, R105, R106, R121,

C406 CEAS222M25 R122, R307, R308, R403—R407,

C205, C225, C227, C230, C231, CEAS330M35 R409-—-R413

C415, C426, C429, C501, C502 : Other resistors RD % PMOL IJ

C423 CEAS332M25 C204, C305-—C308, C508 CEAS4R7M50 © OTHERS

C9, C10 CEYANP100M25 C101, C102, C125, C301, C302, CEYAOQ10M50 Mark Symbol & Description Part No.

C417, C418 > 3 Pin jack 4P (INPUT. OUTPUT) RKB1003

C51, C52, C107, C108, C370, CEYA100M50 X550 Ceramic resonator VSS1014

C371 (4.19MHz)

C15, C16, C126, C127, C421, CEZA101M10 :

C422 Headphone Unit C109, C110, C113, C114, C213, CFTXA103J50

C214 | SEMICONDUCTOR

Ci21, C122 CFTXA222J50 Mark Symbol & Description Part No.

C11, C12, C206, C215, C216 CFTXA223J50 C13, C14 CFTXA273J50 IC16 OP~AMP IC M5218L

C207, C209 CFTXA332J50 C105, C106 CFTXA274J50 CAPACITORS

C103, C104 CFTXA392J50 Mark Symbol & Description Part No.

C115, C116, C119, C120 CFTXA562J50 C208 CFTXA682J50 C801, C802 CEYA010M50

C117, C118 CFTXA822JN50 C803, C804 CEZA101M10

C351, C352 CGCYX104K25 RESISTORS

C221, C222 - CKCYB561J500 C504, C506, C551 —-C553 CKCYF103250 Mark Symbol & Description Part No.

C56, C217, C218, C223, C350, CKCYF473Z50

C401-—C405, C409, C410, C419, VR801 Variable resistor RCV1016

C420, C507, C554 (20k —B) (PHONES LEVEL)

R809, R810 RD%PM470J Other resistors RD %PMCLD

OTHER

Mark Symbol & Description

JA801 Jack (PHONES)

INPUT VR Unit

RESISTORS


VR852 Variable resistor

(20k— A) VR851 Variable resistor

(50k—A) R851, R852

.-Timer Unit —

SWITCH

Mark Symbol _& Description

$1101 Slide Switch (TIMER REC—OFF-—PLAY)

Power Switch Unit

SWITCH


A $1201 Push switch (POWER)

CAPACITOR

Mark | Symbol _ & Description

A C1201 (0.01 » FZAC400V)

FL Unit

SEMICONDUCTORS

Mark | Symbol & Description

IC901 -IC903 D901

OTHER


FL tube

Switch Unit

SWITCHES


$901-S913 Tact switch (mi, «, @, @, 1, TAPE RETURN, », COUNTER, RESET, COUNTER MODE, TAPE CAPACITY, METER RANGE, MONITOR, ©)

Part No.

RKN1002

Part No.

RCS1005

RCV1021

RD%PM333J

Part No.

RSH1014

Part No.

RSA-—063

Part No.

VCG~044

Part No.

LC7570 188254

Part No.

RAW1018

Part No.

RSG— 155

RESISTORS

All resistors

PB DOLBY Unit

SEMICONDUCTOR

Mark _Symbol_ & Description

IC14 DOLBY-B, C !C

COILS


L603, L604 Trap coil L601, L602 Coil (19mH)

CAPACITORS

Mark Symbol & Description .

C631, C632 C615, C616 C619, C620 C613, C614 C605, C606

C629, C630 C633, C634 C627, C628 C617, C618 C609, C610

C611, C612 C623, C624 C625, C626 C621, C622 C601, C602

C607, C608

RESISTORS


R601, R602, R605, R606, R617, R618 Other resistors

REC DOLBY Unit

SEMICONDUCTORS


IC15 Q701 -—Q704

COILS AND FILTERS


L701, L702 Coil (19m) F701, F702 MPX Filter

CT-737MARK I

Mark Symbol & Description Part No.

RD % DPMCILICIJ

Part No.

CX20187

Part No.

RTF 1067 RTF1005

Pa rt No.

CEASR10M50 CEASR15M50 CEASR22M50 CEASR47M50 CEYA010M50

CEYA100M5S0 CEZA101M10 CFT XA103J50 CFTXA153J50 CFT XA332J50

CFT XA472J50 CFT XA473J50 CFTXA682J50 CFT XA683J50 CKPUYB101K50

CKPUYB681K50

Part No.

RDYPMODOJ

RD%PMODIOJ

Part No.

CX20187 DTC114ES

Part No.

RTF1005 RTF1066

| CT-737MARK II

CAPACITORS

Mark Symbol! & Description

C715, C716 C719, C720 C713, C714 C733 C703, C704

C705—C708 C729, C730 C734, C735 C727, C728 C701, C702

C717, C718 C731, C732 C737, C738 C711, C712 C723, C724

C725, C726 C721, C722 C709, C710

RESISTORS


R721, R722, R703, R704, R707—R710 Other resistors

CAL VR Unit

RESISTORS


VR1201 Variable resistor (5k-—B)

. VR1202 Variable resistor

(5kB x 2) R1i201, R1202

Tape Selector Unit

SWITCHES


$2, S3 Slide switch (NORMAL, CrO2., MATAL)

Sensor Unit (A)

SEMICONDUCTOR


Di Photo interrupter

CAPACITOR


C2

Part No.

CEASR15M50 CEASR22M50 CEASR47M50 CEAS100M50 CEYA010M50

CEYA100M50 CEYA4R7M50 CEZA101M10 CFTXA103J50 CFTXA122J50

CFTXA153J50 CFTXA332J50 CFTXA392J50 CFTXA472J50 CFTXA473J50

CFTXA682J50 CFT XA683J50 CKPUYB681K50

Part No.

ROY%PMCILILI J

RD’%PMCLIDIUIJ

Part No.

RCV1007

RCV1036

RD%PM562J

Part No.

RSH -070

Part No.

GP1A51HR

Part No.

CKPUYY103N16

REC SW Unit

SWITCH


S1 Tact switch RSG-143

Connector Unit

CAPACITOR


C1 CKCYF473Z50

RESISTOR


R1 RD%PM681 J

CT-737MARK Ii

8. ADJUSTMENTS

8.1. MECHANISM RELATED ADJUSTMENT

Azimuth adjustment 2. Tape Speed Adjustment

Adjustment Adjustment

Azimuth Playback test tape STD-331B and adjust Capstan motor

adjustment so that the 10 kHz output level is adjustment Adjust eo that the playback mroquency 2 : : 3015 + 5 Hz at the beginning of winding

screw (Refer maximum and also so that there is no hole (Refer to of test tape STD-301 to Fig. 1.) phase difference between L-ch and R-ch. Fig. 2.)

Playback test tape STD-301 again and confirm that the above specifications are satisfied.

Azimuth adjustment

screw

Slotted screwdriver

Height adjustment nut

Fig. 1.

3. Adjustment of Door Damper

Adjustment Location Specifications

Make sure that the door opens smoothly, there is no two-stage motion, and that there is no bounding when it opens

completely. (Perform with no cassette half inserted.)

Cylinder adjustment screw (Refer to Fig. 3.)

Opening becomes slower Opening becomes faster (when bounding) (when two-stage motion)

Adjustment screw

Reference value

A=5+1mm

CT-737MARK Ii

8.2 ELECTRICAL ADJUSTMENTS

Adjustment Conditions List of Adjustments

1. The mechanical adjustments must be completed first.

2. The head must be cleaned and demagnetized.

3. Turn power on allow the deck to warm up for at least

a few minutes before commencing any electrical

Playback sections

1. Head azimuth adjustment.

2. Playback equalizer adjustment.

3. Playback level adjustment. adjustments.

4. The reference signal is OdBv=1Vrms. . :

5. Connect a 50 kilo-ohm (or between 47 to 52 kilo-ohm) Recording sections ;

load resistance to the OUTPUT terminals. 1. Bias oscillator adjustment. 2. Recording bias adjustment.

6. Unless otherwise specified, the switches listed below are 3. Recording level adjustment.

left in the positions indicated.

DOLBY NR : OFF

TAPE SELECTOR : NORM NOTE: This unit has an automatic tape selection feature.

Test Tapes

STD-331B : Playback adjustments

(See Fig. 8-1)

STD-630 : NORMAL blank tape

STD-620 : CrO: blank tape

STD-610 : METAL blank tape

ae 30S O dB: 315 Hz 160 nwb/m

106° TOS: hh ecadeees ee bos Saree S wt hoa od ee wena j Os

14 112.5) 10 8 16.3] 4 1 |500/250) 125| 63 | 40

kHz) kHz| kHz | kHz | kHz! kHz kHz| Hz | Hz | Hz! Hz! Hz

Fig. 8-1. Constants of the test tape STD-331B

PLAY BACK

Fig. 8-2. Head azimuth adjustment Fig. 8-3. Allowable playback frequency response

zone

CT-737MARK I]

PLAYBACK SECTION

1. Head Azimuth Adjustment

e Turn VR3, VR4 to mechanical center positions.

[No.| Mode | Input signal & test tape Adjustment location

ll Play the 10 kHz/-20 dB | Head azimuth adjustment section of STD-331B test screw.

he STOP Lock the screw with screw

LINE OUT Maximum playback signal level.

tape. (See Fig. 8-2)

lock after compieting adjustment.

2. Playback Equalizer Adjustment

Peeeeal input signal & test tape Adjustment location Adjustment value

Play the 315 Hz and VR1 (Lech) LINE OUT Adjust the 10 kHz level! 10 kHz/-— 20 dB portion VR2 (Rech) to 0.0 dB +0.5 dB in of the STD-331B6 test respect to the 315 Hz

tape. playback level.

3. Playback | level Adjustment * This adjustment determines the DOLBY NR level, and must be performed with great care.

pe input signal & test tape Adjustment location Adjustment value

mien of fe STO vn iabden nn ie

section of the STD-3318 VR4 {Rech} TP. 4 (Rch}

test tape.

MAIN UNIT

vr301 (©) ©) vasoz

PB DOLBY UNIT

REC DOLBY cee

DOLL DOLL TP |

vRt01 @ VR102

DOL.R DOL.R TP2 s+ TP4

vr3 ©) VR4

VR2

vai @)

Fig.8—4 Adjustments locations

On ECV ANT \ 51, Gall

RECORDING SECTION

1. Bias Oscillator Adjustment

REC load the STD-610 test L 203 TR. 11

tape with no input signal.

2. Recording Bias Adjustment

Adjustment value

85kHz + 300Hz a

2-1, Overbias Adjustment

/No.| Mode | Input signal & test tape Adjustment location Adjustment value

LINE OUT L, R

terminals

1, | REC/ Apply a 6.3 kHz/10 dBv PAUSE {-— 10VU meter reading)

signal to the Line input terminals and insert STD-630.

2. | REC Record and play back the VR203 {L) —~ PLAY 6.3 kHz signal at

— 10 dBv input level. VR204 (R)

3. Record the 6.3 kH2/ CrO2 VR201 ~ 10 dBv signal on (L/R} STD-620 and play back.

Record the 6.3kHz/ METAL | VR202

~ 10 dBv signal on (L/R} STD-610 and play back.

Turn control clockwise past the peak to assure proper overbias value.

3.0 dB Turn control

overbias clockwise past the

peak to assure

Cro2 | 2.5dB a lai overbias ;

METAL | 1.0 dB

overbias

2-2. Frequency Response Adjustment

|No.| Mode | input signal & test tape Adjustment location Adjustment value

REC/ Apply a 10kH2z/315 Hz/ LINE OUT L, R PAUSE -— 20 d8v signal to the

Line input terminals and insert STD-630.

terminals

2Z. | REC Record and play back the

— PLAY 315 Hz signal and a 10 kHz signal at ~ 20 dBv input level.

VR203 (L)

VR204 (R)

Record and play back

repeatedly, comparing

the 316 Hz and 10 kHz playback levels, and

adjust to +0.5+0.5 dB.

+0.5+ 1.0 dB Record the 10 kHz/ CrO2 VR201 (L/R} 315 Hz, — 20 dBv signal on STO-620 and play back.

4. Record the 10 kHz/ METAL | VR202 (L/R} 315 Hz, — 20 dBv signal on STD-610 and play

back.

5. | Check distortion value after adjustment is completed and confirm that there is no underbias.

+0.5+1.0 dB

3. Recording Level Adjustment

}No.| Mode _| input signal & test tape Adjustment location Adjustment vaiue

| 1. | STOP Set the TAPE SELECTOR switch to the NORM position. 2. | REC Apply a 315 Hz/0 dBv Rec Level control volume TP. 1 (ich) ~ 15.2 dBv

PAUSE signal to the line Input TP. 2 {Reh} terminals, load the

STD-630 test tape.

Set the DOLBY NR switch to the ON position. (DOLBY 8) 4. | REC/ Record the above signal VR101 (Leh) TP. 3 (Leh) Repeatedly record,

PLAY onto the STD-630 test VR102 (Rch} TP. 4 (Reh} playback and adjust so tape, and playback. that the playback signal

level becomes ~ 15.2 dB.

5. | STOP Set the TAPE SELECTOR switch to the CrOz position. REC/ Record the above signal Check TP. 3 (Leh) ~ 15.2 dBv + 1.5 dB PLAY onto the STD-620 test TP. 4 {Rch)

tape, and playback.

STOP Set the TAPE SELECTOR switch to the METAL position. REC/ Record the above signal TP. 3 (Lch) — 15.2 dBv +1.5 dB PLAY onto the STD-610 test TP. 4 (Rech)

tape, and playback.

CT -737MARK II_/HB, CT-737MARK II SHE

9 FOR CT—737MARK I/HB AND CT—737MARK IS

/HEM TYPES

CONTRAST OF MISCELLANEOUS PARTS

NOTES : ¢ Parts without part number cannot be supplied,

e The A, mark found on some component parts indicates the impotance of the safety factor of the part, Therefore, when

replacing, be sure to use parts of identical designation,

* Parts marked by “®” are not always kept in stock, Their peu yeey time may be longer than usual or they may be unavailable,

The CT—737MARK I_/HB and CT—737MARK I S,/,HEM types are the same as

the CT—737MARK I_HEM type with the exception of the following sections.

Symbo! & Description

AC Power cord Slide SW konb (A) CTIMER) Power button (POWER) Push button (DOLBY, MPX)

Button (<<, I, >, >, @, IE, OD

Counter button (COUNTER) VR knob B (REC BALANCE) Headphone knob

(PHONES LEVEL, REC CALIBRATION) Side pane! (L) Side pane! (R)

Door panel

Under escutcheon Button holder VR knob assembly (A) Bonnet

Door assembly Front panel assembly

Packing case Operating instructions

CT ~737MARK I| CT-737MARK 1 /HB type S/HEM type

C

(French ‘italian Dutch/Swedish/Spanish/ Portuguese)

T-737MARK I / HEM type

PDG1003 RAC —668 RAC1203 RAC1204 RAC1206

RAC1232 RAC1262 RAC1337

RAH1200 RAH1201

RAH1314 RAP1003 RNK1301 RXA1158 RXX1092

RXX1113 RXX1207 RHG1126 RRD1062

RDG — 032 RAC - 668 RAC1203 RAC1204 RAC1206

RAC1232 RAC1262 RAC1337

RAH1200 RAH1201


RXX1113 RXX1207 RHG1126

PDG1003 RAC1219 RAC1292 RAC1293 RAC1294

RAC1289 RAC1263 RAC1360

RAH1321 RAH1322


RXX1114 RXX1208 RHG1127

manual: ct737markii sm pioneer en

Documents