Technics RSEH-760 Service manual

N Deck 1 cassette holder open button (< OPEN)
O Deck 1 cassette holder

PO Q RN

P Fast forward/rewind buttons (6, 5)
Q Deck 2 cassette holder
R Deck 2 cassette holder open button (< OPEN)
S Counter reset, display buttons

(COUNTER, RESET, DISPLAY)

T Deck 1/deck 2 select button (DECK 1/2)
U Playback buttons and indicators (", !)

The color of the indicators depends on the operation taking place.

0

OPEN

DECK 1/2

COUNTER

RESET

DISPLAY

¡1

DOLBY NR

7

REV MODE TAPE EDIT

0

OPEN

H

REC

PAUSE

If stopped, fast forwarding or rewinding: orange
If playing or recording: green
While carrying out TPS or recording is on standby: flashes

V Stop button (∫)
W Dolby noise reduction button (DOLBY NR)

T WX ZYU VS

X Reverse mode button (REV MODE)
Y Tape edit button (TAPE EDIT)
Z Record pause button (¥ REC PAUSE)

Notes

Signal line : Playback signal line
( ) indicates pin No. Right channel.

: Recording signal line

VR102(VR103)

PLAYBACK GAIN ADJ.

(DECK2)

VR104(VR101)

PLAYBACK GAIN ADJ.

(DECK1)

CXA1998BQT6

DECK1

PLAYBACK HEAD

DECK2

R/P HEAD

BA7755AF

IC103

R/P SELECT

8765

3

21

+B1

4

R/P EQ AMP

R101,

C115

(R102,

C116)

REC

EQ

IC101

Q103

(Q104)

(11)

MC14066BFEL

IC102

DECK 1/2 SELECT

1

4

(8)

14

7

+B1

11

+B1

42

(43)

Q105

41

(Q106)

(44)

40

(45)

Q101

(Q102)

39

(46)

29
(8)

13

(12)

(10)

(6)

(9)

5

3

2

23

+B3

3

(14)

1

(16)

RFS

12

38

(47)

31
(6)

30
(7)

AMS

REC

EQ AMP

35 36 34 448 12

+B1

Q107

CXA1552M-T4

IC201

DOLBY B NR

ATT1

ATT2

22 21 20 19

AGC

P.B. EQ

CONT.

REC EQ

CONT.

MUTE

ATT3

ON/OFF

15

5124

3

+B1

2

R/P

+B3

Dolby

ON/OFF

Q201

15 161718

SC DET

DOLBY

L(R)ch

SHIFT

REGISTER

LATCH

(11)

6

(10)

8

+B3

(9)

ENC/DEC

select
Q202

7

32
(5)

27
26

25
24

DECK2

ERASE HEAD

TP301 TP302

Q302

L301

+B1

Q303,304

BIAS
OSC

D301

Q301,305,306

BIAS OSC

control
(CrO2/

METAL)

S953(CrO2,DECK1)

S973(CrO2,DECK2)
S976(METAL,DECK2)

Q807,809

SOLENOID

D101

Solenid

drive

D102

D951

0N2180RLC1

IC951/952

PHOTO

INTERRUPTER

CAPSTAN

MOTOR

(DECK1)

+B2

S951(MODE)

S952(HALF)

Q803,805

Capstan

motor

M

(TAPESPEEDADJ.)

drive

VR801

MC14066BFEL

IC202

SIGNAL CONT.

2

VREF

+B3

Reset
signal

X701

(8MHz)

15,21

Q706,

D705

31

32

25

18
26
27
28

20

19

1

3

ENC/DEC

DOLBY
ON/OFF

TPS

Vss
AVss

RESET
A DATA
A CLK
A LATCH

X OUT

XIN

+B3 Vcc

generator

10
(8)

14

7

+B1

DATA IN

DATA OUT

M38503M2400F

IC701

MICRO COMPUTER

FWD LED

REV LED
LED CNT

LMT

CLK

REQ

HALT

CS

KEY2

KEY1

MC2

MC1

12

(6)
11

(9)

Q604,D606

D707

Q901,902

D905,907

()

Q602,

D651,652
Regulator

Regulator

RCH

RCH

Rch OUT

Lch OUT

Rch IN
Lch IN

A.GND

Q108

4

10

12
11

8

7

9

KEY SWITCH

(S900,901,903~907,

41

42

40

41

16
17
37

Q701

Interface

Q702,703

Interface

D710

909~915)

+B1

+B2

+B3

TP604

+B3

LED
drive

LED
drive

Q903,904

To CD CHANGER,CD PLAYER

BLOCK DIAGRAM

To SOUND PROCESSOR

BLOCK DIAGRAM

+10V

(D.GND)

TP609

CN601

2
3
4
5
6
7
8

9
10
11

12

14
15
16
17
18
19
20NCNC

SYNC1

NC

CS
+B(10V)
D.GND
SCLK
DATA

DECK REQ
NC

TAPE Rch OUT
TAPE Lch OUT
RS A.GND13
TAPE Rch IN
TAPE Lch IN

NC
A.GND

NC
NC

13
22

14

23

24

40

5

6

METAL2
CRO2 1

CRO2 2

MODE

HALF1

PHOTO1 T

PL1

M1

AD SW

PHOTO2 T

PL2

M2

Z971

+B3

VR803

2
1
7

Q804,806

Capstan

motor

drive

LADDER

RESISTOR

0N2180RLC1

INTERRUPTER

IC971/972

PHOTO

M

+B2

39

38

29

30

(TAPESPEEDADJ.)

S975(F.REC.INH.)

3

S971(MODE)

4

S974(R. REC. INH.)

5

S972(HALF)

6

CAPSTAN

MOTOR

(DECK2)

Solenid

Q808,810

drive

D971 SOLENOID

[DECK 2]
R/P HEAD,
ERASE HEAD

1 . . . 5

2

1 . 5

CP102

4

CP305

1

.
.

4

A

CAPSTAN
MOTOR
[DECK 2]

CP902

1 . . . . . . . 9

[DECK 1]
PLAYBACK
HEAD

MAIN P.C.B.

1 . . . 5

2 4

1 . 5

CP101

CP306

CN901

1 . . . . . . 8

1

.
.

4

1 . . . . . . . 9

CP901

W601

CAPSTAN
MOTOR
[DECK 1]

EARTH TERMINAL P.C.B .

D

W601

BLACK

To CD CHANGER,
CD PLAYER &
SOUND PROCESSOR

1 . . . . . . . 9

CS971

MECHANISM P.C.B. (DECK 2)

C

OPERATION P.C.B.

E

1 . . . . . . 8

FW901

1 . . . . . . . 9

CS951

MECHANISM P.C.B. (DECK 1)

B

MAIN CIRCUIT

A

:POSITIVE VOLTAGELINE

: PLAYBACK SIGNAL LINE
: RECORDING SIGNAL LINE

DECK1

Lch

PLAYBACK
HEAD

Rch

DECK2

Lch

R/P HEAD

Rch

ERASE
HEAD

IC103
BA7755AF

R/P SELECT

ERASE CURRENT
CHECK POINT

R107

10K

(8.9V)
0V

G

S

Q103
Q104

SGD

R131

330K

R108

10K

1 2 4

C301

16V470

R313

1

9.6V 0V

C302

100V2.2

C303

6800P

TP302TP301

0V
(8.9V)

N

CP101

1

2

3

4

5

D

0V0V

680P

C103

0V0V

Q105,106
2SD1819ARTX

MUTING

CP102

1

2

3

4

5

R132

27K

6V

678

5

3

0V
(9.5V)

1.8K

R302

Q101
2SJ164RTA

HEAD SELECT
(REC:ON)

C102

C101

Q105

(0.7V)

0V

R143

100

Q103,104
2SJ164QTA

HEAD SELECT
(PLAY:ON)

0V

(0.7V)

(0.7V)

0V

R301

10K

MA111TX

Q306
DTC144EUT106

BIAS OSC CONT.

SGD

(0.2V)

9V

680P

330K

R105

680P

0V

0V

Q106

R106

C144

330K

470P

(0.2V)

9V

G

D

S

0V0V

Q102
2SJ164RTA

HEAD SELECT
(REC:ON)

C116

470P

L301

4

6

Q302

0V

2SD1328STXRA

SWITCHING
(REC:ON)

D301

C305

50V0.1

R303

2.2K

0V0V

R144

100

R102

R104

(0.6V)

C143
470P

5.6K

100K

R305

0V

18K

3

25

1

C125

3300P

47K

R101

5.6K

C115
470P

IC101
CXA1998BQT6

R/P EQAMP

R111

82

C111

6.3V47

R141

100

R142

100

680P

C104

C112

6.3V47

82

R112

R110

C114

C113

50V2.2

C126

L302

100 H

C304

16V100

0V

47K

100K

R103

470P

C131

C130

16V100

R113

12K

1.2V

R109

1K

2.6V

C109

0.018

2.6V

1.3V

0V

0V

0V

0V

1.3V

C110

0.018

2.6V

2.6V

1.2V

1K

27K

R114

R133 33K
R130 4.7M

50V2.2

3300P

C139 6.3V47
C124 25V4.7

A
B

Q303

C306

0.039
R307

1/2W2.2

Q303,304
2SD1450RSTA

BIAS OSC

Q305
DTC144EUT106

BIAS OSC CONT.

C123

25V4.7

C119

C308

C310

50V1

10K

10K

3300P

0.01

(0.8V)
0V

AGC

GAIN

AGC

AGC

GAIN

R310

4.7K

R311

4.7K

C120

R309

C309

9.6V

40K

40K

50V1

4.7K

6.3V47

RECEQ

R158 22K

4.7K

R138

C150

10V100

38

39

40

41

42

43

44

45

46

47

48

9.6V

9.5V

(0.1V)

(0.1V)

9.5V

0V

0V

22

R119

C117

22

R118

C129

R117

10V22

1K

RFS

210K 210K

210K

210K

1 2 3 4 5 6 7 8 9 10 11 12

(1.6V)

C307

1000P

(0.6V)
0V

(0.6V)
0V

Q304

15K

R304

(0.6V)

0V

330P

C140

16V10

4.5V9V9V 4.5V 4.5V 4.5V 4.5V 0V5V 0V

IREF

MUTE

5V 0V 4.5V 4.5V 4.5V 4.5V 4.5V 8.6V 5V0V

R308

C323

1000P

47K

47K

1K

R306

C311

(0.7V)

33K

0V

0V

(0.2V)

C118
330P

R154

2.7K

0.01

0V

Q301
2SD1819ARTX

BIAS OSC CONT.

SHIFT

REGISTERS

PBEQ

CTL

REQEQ

CTL

20K 20K

AMSRECEQ

4.7K

R127

C138

0.047

R135

6.8K

R134

3.9K

2.2K

R137

2.2K

R136

R153

2.7K

C137

50V0.1

R157

22K

252627282930313233343536

LATCHES

20K 20K

100K

R125

D102

MA111TX

D101

MA111TX

C132

A

B

C

470P

2437

23

22

21

20

19

18

17

16

15

14

13

5V

5V
(9.6V)

0.1V
(0.1V)

9.6V

(0.2V)

9.6V

(0.2V)
5V

(5V)

0.2V

R120

C135 50V1

100K

C136 50V1

E
D
F

CNRMO

R725

2.2K

R726

2.2K

470P

C134

0.1

470P

C133

C142

10K

10K

R122

R121

Q107
DTA143EUT106

R/P SELECT

(0.2V)

4.7K

9.6V

4.7K

R730

A

B

9.6V

0V
(9.5V)

2.2K

9.6V

:POSITIVE VOLTAGELINE

5V

C207
270P

R209

C203

1K

25V4.7

R23722R220

22

0.01

C241

5V

C204

25V4.7

R210

1K

R211

L201

C219

16V100

IC201
CXA1552M-T4

DOLBY B NR

C208

270P

L202

10K

C211

1500P

R212

10K

2.2K

2.2K

R218

R217

4.8V 9.6V 4.7V 4.7V 4.6V 4.7V 0.4V 4.8V

1 2 3 4 5 8

4.8V 4.7V 1.2V 4.7V 0.4V 4.8V4.6V

: RECORDING SIGNAL LINE

C220

10V470

680P

C239

ATT2

ATT2

C205
50V1

ON/OFF

ATT1

ATT3

ATT3

ATT1

DOLBY
ON : 0V

R/P

(0V)

R2133KR215

C221

50V0.68

R221

100

6 7

SC DET

SC DET

101116

C225

25V4.7

C218

50V0.1

C213

12K

25V4.7

912131415

DOLBY

Lch

R2301KR223

10K

C223

BA

C

25V4.7

: PLAYBACK SIGNAL LINE

R216

12K

3K

R214

C222

50V0.68

B

PLAYBACK
GAIN ADJ.
(DECK1/Lch)

A

PLAYBACK
GAIN ADJ.
(DECK1/Rch)

C214

25V4.7

VR101

20K(B)

5.6K

R147

DOLBY

Rch

VR104

20K(B)

5.6K

R150

PLAYBACK
GAIN ADJ.
(DECK2/Lch)

IC102
MC14066BFEL

DECK 1/2 SELECT

VR103

20K(B)

5.6K

R149

C212

1500P

VR102

20K(B)

5.6K

R148

PLAYBACK
GAIN ADJ.
(DECK2/Rch)

680P

C240

1 2 3 4 5 6 7

9.6V 9.6V

50V1

C141

C206

(0.1V)

R219

10K

R224

B
A

0V0V0V 0V

(0.1V)

R222

1K

R231

(0V)

5V

4.7K

4.7K

Q202
DTA143EUT106

ENC/DEC SELECT

47K

R140

(9.6V)

0.1V

R139

47K

18K

50V1

100

(5V)
0V

(9.6V)

0.1V

0V0V0V 0V9.6V

C217

50V0.1

C226

25V4.7

891011121314

5V

5V5V

Q201
DTA143EUT106

DOLBY ON/OFF

100K

R152

4.7K

4.7K

0V

I

J

100K

R151

MAIN CIRCUIT

A

Q807
2SB621ARSTA

SOLENOID DRIVE

10.3V

10.3V

0V

MECHANISM CIRCUIT (DECK1)

B

R953

39K

D951

MA165TA

SOLENOID

R951

680

IC951 IC952

12

34

S951

12

34

R806

(MODE)

5V

R802

10K

560

S953

S952

(CrO2)

(HALF)

R954

39K

IC951,952
0N2180RLC1

PHOTO
INTERRUPTER

5V

Q809
DTC143EUT106

SOLENOID DRIVE

R823

560

10.2V

0V

4.7K

4.7K

CS951

:POSITIVE VOLTAGELINE

DL EK

0V

1
2
3
4
5
6
7
8
9

CAPSTAN

Q810
DTC143EUT106

SOLENOID DRIVE

0V

4.7K

4.7K

MOTOR
(DECK1)

M

10.3V

R824

560

10.2V

0V

Q803
2SD592ARSTA

MOTOR DRIVE

9.8V

CP901

CP306

R818

R805

3.9K

0V

2.2

1
2
3
4
5
6
7
8
9

1

2

A

3

B

4

R812

560

R803

10K

0V

Q808
2SB621ARSTA

SOLENOID DRIVE

10K

R811

10.3V

Q805
DTA143EUT106

MOTOR DRIVE CONT.

R814

470

10.3V

VR801

5K(B)

5V

0V

5V

P
S
F
Q

TAPESPEED
ADJ.(DECK1)

4.7K

10.3V

0V

4.7K

5V

CAB

MECHANISM CIRCUIT (DECK2)

C

R971

680

BA

S973

(CrO2)

S976

Z971

1 2 3 4 5 6 7

(METAL)

50K

4.7K

S975

(F.REC.INH.)

25K

4.7K

S971

50K

(MODE)

5V

25K 25K

4.7K

S974

IC971 IC972

12

34

50K

50K

4.7K

S972

(HALF)

(R.REC.INH.)

R973 39K

R974

12

34

D971

MA165TA

SOLENOID

50K

39K

IC971,972
0N2180RLC1

PHOTO
INTERRUPTER

H
G
B

R820

R808

3.9K

A

5V

Q806
DTA143EUT106

MOTOR DRIVE CONT.

Q804
2SD592ARSTA

VR803

5K(B)

MOTOR DRIVE

TAPESPEED
ADJ.(DECK2)

2.2

5V

5V

470

R813

0.8V

0V 0V

10.3V

4.7K

4.7K

0V

A
B

D
B
C
A

1
2
3
4
5

A

6

B

7

C

8

D

9

E

CAPSTAN

MOTOR
(DECK2)

M

E

CP902CS971
1
2
3
4
5
6
7
8
9

CP305
1

2

A

3

R810

B

10K

4

:POSITIVE VOLTAGELINE

: PLAYBACK SIGNAL LINE
: RECORDING SIGNAL LINE

5V

0.01

C707

D706

MA111TX

L701

10 H

C702

6.3V100

0.01

C701

C706

50V3.3

0V

10K

D705

MA111TX

Q706
DTC114EUT106

RESET SIGNAL
GENERATOR

R711
100K

10K

5ms. 2V/DIV.

T

16ms.

T 16ms.

R737 10K
R736 10K

5V

0.01

C705

0V

T 16ms.

R712 68K
R718 68K
R701 10K
R702 10K

4.8V

0V

4.8V

0V

3.6V
AC E

BD

0V

D701

MA111TX

5V5V0V5V1.4V

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

SS

AV

VREF

KEY1 VCC

KEY2

3V

0V

PHOTO1 T

5V0V5V

2.9V

0V(5V)

LMT

AD SW

0V

M1

PL1

T 16ms.

LED CNT

PHOTO2 T

5V

2.7V

JEDG

R738

1K

D710

MA111TX

100

R745

D707

R710 1K

L702

1.6V

1V

2.2V

2.5V

0V

0.5V

CS

CLK

REQ

HALT

NC

STOP : 0V

DATA IN

METAL2

4.8V

DATA OUT

0V

DOLBY ON/OFF

ECS

NC

NC

M2

ENC/DEC

313233343536373839404142 222324252627282930

0V

0V

(5V) 0V

MA4051MTA

0V

CRO2 2

PL2

0V

R723 1K

5V5V2V

0V

SS

V

FWD LED

A CLK

A LATCH

5V

0V

Q701,703
2SD1819ARTX

R747

INTERFACE

1K

1K

R727

2.3V

5V5V5V

4.7K

0V

VSS

XOUT

CRO2 1

MODE

5V

R744

1.9V

0.1V

0V

Q701

1.2V
P P

R722

100

X701

(8MHz)

F=8MHz

IC701
M38503M2400F

MICRO COMPUTER

R703

5.6K

R708

4.7K

R729

13

R704

4.7K

R724 1K

F=8MHz

0V

XIN

RESET

REV LED

ADATA

HALF1

TPS

0V

R741

D708

0V

4.7K

Q703

2

2.4V
P P

R735 4.7K
R721 4.7K
R732 100K

22K

MA111TX

0.2V

Q702
2SD1819ARTX

INTERFACE

F
H

I

1.8V

47K

R743

0V

R705

47K

D709

MA111TX

0.6V

0V

R728

10K

CN901

1
A
B
C

D

E

2

3

4

5

6

7

8

R232

10K

F

G

5V

10.3V

Q602
2SD2144STA

REGULATOR

10.3V9.6V

10.3V

C602

16V220

CBAFIOJKLMNGH

R630

1/6W0.33

R602

1/6W0.33

330

R604

R609

C605

100

16V220

D651

MA165TA

D652

MA165TA

9.6V

Q604
2SC3940AQSTA

REGULATOR

5.7V

C603

16V47

+

10V

EDABC

A
B
C
D
E

F

PQR

S

R603

C604

D606

0.01

MA4056MTA

1/4W10

R606

(D.GND)

TP609

Rch

OUT

CT.GND

1.5K

R632

47K

Lch

OUT

TP604

RchINLch

EARTH
TERMINAL

D

A.GND

W601 E1

CN601

1

F

G

H

I

J

IN

SYNC

2

NC

3

NC

4

CS

5

+B(10V

6

D.GND

7

SCLK

8

DATA

9

DECK REQ

10

NC

11

TAPERchOUT

12

TAPELchOUT

13

RS A.GND

14

TAPERchIN

15

TAPELchIN

16

NC

17

A.GND

18

NC

19

NC

20

NC

CIRCUIT

)

To
MAIN CIRCUIT of
CD CHANGER,
CD PLAYER &
MAIN CIRCUIT of
SOUND PROCESSOR

9.4V5V

OPERATION CIRCUIT

E

:POSITIVE VOLTAGELINE

:PLAYBACKSIGNAL LINE

1
2
3
4
5
6
7
8

FW901

S912

(

DECK 1/2

S911

(

REV MODE

S910
(

S909

( )

S915

(

OPEN

S914

(

COUNTER

RESET

S913

(

COUNTER
DISPLAY

S907

( )

(

5V

S906
(

S905

(

DOLBY NR

S904

REC PAUSE

S903

(

TAPEEDIT

S901

(

OPEN

S900

(

)

)

)

3.3K

R906

)

2.2K

R905

)

1.8K

R904

)

1.5K

R903

1.2K

R902

1K

R901

820

R900

)

)

2.2K

R911

)

)

)

)

R910

R909

R908

R925

R924

1.8K

1.5K

1.2K

1K

820

Q901
DTA143EUT106

LED DRIVE

R915

680

R917

680

STOP : 0V

5V

5V

D904

MA111TX

4.7K

4.7K

4.7K

4.7K

0V

0V

0V

R916

330

5V

R914

330

Q902
DTC143EUT106

LED DRIVE

D907

SML79455C

(

)

D905

SML79455C

)

(

Q903
DTC143EUT106

LED DRIVE

0V

4.7K

0V

2.6V

4.7K

0V

4.2V

4.7K

Q904
DTC143EUT106

LED DRIVE

0V

4.7K

MAIN CIRCUIT

A

A

C215

R233

16V10

B

C
D
E

F

G

100

R234

100

IC202
MC14066BFEL

SIGNAL CONT.

Q108
DTC143EUT106

SWITCHING

(5V) 0V

4.7K

4.7K

C216

16V10

8.3V(0V)

47K

R226

4.7V 8.3V

8 9 10 11 12 13

7 6 5 4 3 2 1

R208

R126

6.8K

22K

8.3V
(0V)

R225

47K

R207

6.8K

9.6V

(0V)

9.6V4.7V 4.7V 4.7V

14

A

MAIN P.C.B.

A

B

C

DE

F

1

ELECTRICAL PARTS LOCATION

Ref.
No.

MAIN P.C.B.

A

IC101
IC102
IC103
IC201
IC202
IC701

Q101
Q102
Q103
Q104
Q105
Q106
Q107
Q108
Q201
Q202
Q301
Q302
Q303
Q304
Q305
Q306
Q602
Q604
Q701
Q702
Q703
Q706
Q803
Q804
Q805
Q806
Q807
Q808
Q809
Q810
D101
D102
D301
D606
D651
D652
D701
D705
D706
D707
D708
D709

D710
VR101
VR102
VR103
VR104
VR801
VR803

L201

L202

L301

L302

L701

L702

X701
CN601
CN901
CP101
CP102
CP305
CP306
CP901
CP902

W601
TP301
TP302
TP604
TP609

No.

Lo.

2C
3C
3B
6B
6B
5C
2B
2B
3B
3B
3B
3B
2C
5B
5B
5B
1C
2A
1C
2B
1D
1C
7B
7B
6C
6C
6C
5C
7C
4B
6C
4B
6C
3C
6C
4C
4D
4D
1B
7B
7B
7B
5C
5D
5C
6C
6C
6C
7C
3D
2D
2D
3D
6D
5D
5B
5B
1B
1B
6B
6C
5C
8B
6D
6B
3B
3C
6C
7D
4D
8B
3A
2A
8D
8B

Ref.

No.

R101
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R117
R118
R119
R120
R121
R122
R125
R126
R127
R130
R131
R132
R133
R134
R135
R136
R137
R138
R139
R140
R141
R142
R143
R144
R147
R148
R149
R150
R151
R152
R153
R154
R157
R158
R207
R208
R209
R210
R211
R212
R213
R214
R215
R216
R217
R218
R219
R220
R221
R222
R223
R224
R225
R226
R230
R231
R232
R233
R234
R237
R301

No.

Lo.

2B
2B
2B
2B
2B
2B
3B
3B
2C
2C
2B
3B
2B
3C
2B
2C
2D
2D
2C
2C
2C
7B
2C
3C
3B
2B
3C
3D
3D
4D
4D
3C
2C
2C
3B
3B
3B
3B
3D
2C
2C
3D
3C
4B
6B
7B
7B
7A
6B
6B
5B
5B
6B
6B
4B
3B
3B
3B
6B
6B
6B
6B
6B
6B
6B
6B
6B
6B
6B
5B
6B
7B
7B
6B
1B

Ref.

No.

R302
R303
R304
R305
R306
R307
R308
R309
R310
R311
R313
R602
R603
R604
R606
R609
R630
R632
R701
R702
R703
R704
R705
R708
R710
R711
R712
R718
R721
R722
R723
R724
R725
R726
R727
R728
R729
R730
R732
R735
R736
R737
R738
R741
R743
R744
R745
R747
R802
R803
R805
R806
R808
R810
R811
R812
R813
R814
R818
R820
R823

R824
RJ504
RJ507
RJ508
RJ509

C101

C102

C103

C104

C109

C110

C111

C112

C113

Lo.
No.

3B
1C
1D
1C
1C
1B
1C
2B
1C
1C
3A
7B
7B
7B
7B
7B
7B
8B
5C
5C
5C
6C
6C
6C
7C
5C
7C
4D
5C
5C
6C
6C
2D
2D
6C
6C
6C
3D
3D
5C
6C
6C
6C
6C
6C
6C
7C
7C
6C
5D
6D
6C
5D
5D
4C
4C
4B
6C
6C
3C
6C
4C
6B
3B
5D
5D
3B
3B
3B
3B
3B
3B
2B
3B
2C

Ref.

No.

C114
C115
C116
C117
C118
C119
C120
C123
C124
C125
C126
C129
C130
C131
C132
C133
C134
C135
C136
C137
C138
C139
C140
C141
C142
C143
C144
C150
C203
C204
C205
C206
C207
C208
C211
C212
C213
C214
C215
C216
C217
C218
C219
C220
C221
C222
C223
C225
C226
C239
C240
C241
C301
C302
C303
C304
C305
C306
C307
C308
C309
C310
C311
C323
C602
C603
C604
C605
C701
C702
C705
C706
C707

Lo.

No.

2C
2B
2B
3C
4B
6B
7B
2B
2B
2D
2C
2B
2B
2B
2D
2D
2D
2C
2C
2C
2C
3C
2B
3C
2C
2B
2B
3B
5B
3B
3C
4B
5B
5B
6B
6B
3B
4B
6B
7B
5B
6B
6B
6B
4B
4B
5B
6B
6B
6B
6B
6B
5B
1B
2B
1B
1C
1B
1B
1C
1C
1C
1C
1C
7B
7B
7B
7B
5C
5C
5C
5C
6C

ECB

Q304

C124

C140

R144

R143

C104

C204

C206

R152

J

J

C223

C217

J

R222

R221

C225

57

Q

J

J

R632

CN601

L302

R117

J

J

C101

Q806

C

R230

R208

810

R126

604

C603

D301

R113

35
36

37

40

R141

C102

EB

C

EB

Q807

R307

J

C130

30

45

R112

R142

C112

Q804

ECB

R813

J
J

Q108

C

EB

L701

R232

C226

Q805

R226

Q809

C218

C216

C307

J

C131

48

C110

J

C

J

J

J

Q

Q303
ECB

IC101

EB

J

B

R818

L301

6

3

R301

5

2

C302

41

N

C303

J

2

Q101
SGD

J

SGD

J

TP302

TP301

3

Q302

IC103

R313

2
4

CP102

C
EB

1
3
5

Q102

1

J

4

J

Q103

4

C301

58

J

J

J

C221

C143

R131

R215

C118

C123

C115

C144

R132

B

R302

SGD

J

SGD

C150

C213

R213

C306

R103

R101

C116

C

R107

C

R108

C222

J

R309

R105

R102

E

EB

R104

R106

Q106

C103

RJ507

R214

C214

J

Q202

C304

C129

C111

R111

C109

Q105

Q104

R216

J

J

Q201

DOLBY

5

6

7

8

L ch

DOLBY

R ch

A.GND

R ch
OUT

L ch

IN

R ch

IN

L ch
OUT

C207

C241

2
4

CP101

J
J

R158

C602

C203

L202

L201

R209

C208

R212

C212

15

R218

R211

16

C219

J

J

IC201

R220

1

1

3

R217

5

C120

D651
D652

W601

C220

R237

C211

C215

R153

C119

J

RJ504

602

Q

B

R154

R157

C

E

R233

R606

C605

R630

R602

R609

R603

20

To CD CHANGER,
CD PLAYER &
SOUND PROCESSOR

R231

R210

R219

C240

10

58

C239

R207

14

1

R604

C604

D606

R224

9

R223

R225

IC202

R234

B
C
E

J

C323

J

J
J

J

R114

C701

C702

Q701

J

C

C

EB

J

B
C
E

803

12345678910111213141516171819

J

J

42

E

(

C311

C308

R310

R308

R109

J
J

C

Q107

C142

2425

20

5

1

R133

C117

CP305

1234

R820

IC701

1510

J

D701

J

J

R704

C

EB

R727

R744

R708

R806

R823

R814

1234

CP306

10V
CT.GND

D.GND

TP609

R311

15
13

12

10

J

B

Q703

R802

BCE

)

C310

C113

EB

R121

J
J
J

303540

J

D706

R705

D708

C

J

C305

R303

R110

J

R118

R122

R127

J

C138

J

J

J

25

15

20

R711

D709

C

E

B

R741

R728

E

R743

J

TP604

C136

R729

C309

C114

R125

C137

C141

C205

Q808

ECB

22

21

R736

D707

R710

R306

C

EB

Q301

C135

J

R139

J

14

IC102

157

J
J

R151

C139

J

J

R812

R824

R811

C

B

R721

R735

R703

C705

J

J

R701

1
2

X701

3

R722

Q702

J

R737

C707

R738

R723

R724

J

J

L702

R747

Q306

R305

C

J

J

J

Q810

E

J

J

J
C

EB

Q706

J

R702

J

J
J
J

J

J

R712

EB

C126

R119

R140

810

R130

R138

J

C706

J

J
J

JJ

R745

D710

J
J

C

EB

R304

C132

C134

C133

C125

R148

R149

R150

R147

R732

J

J

R135

D102

J

R136

J

R137

J

RJ508

RJ509

D705

J
J

VR803

VR801

CN901

1
2
3
4
5
6
7
8

J
J

J

(REP2827D-M)

Q305

R120

R726

VR102

R725

VR103

VR104

R730

VR101

R134

R718

J
J

1
2
3

D101

4
5
6
7
8
9

CP902

R810

R808

R803

R805

CP901

1
2
3
4
5
6
7
8
9

A

B

C

DE

F

1

2

3

4

5

6

OPERATION P.C.B.

E

S901

( OPEN)

R901

R902

R903

S904

( REC PAUSE)

S903

(TAPE EDIT)

S911

(REV MODE)

R904

S905

(DOLBY NR)

R905

R910

R906

S907

( )

S900

( )

R900

S909

( )

S912

(DECK1/2)

Q903

R911

R909

B

C

J

D904

E

R915

D907

R917

D905

R914

( )

( )

B

S906

( )

J

S910

( )

C

J

Q904

E

EARTH TERMINAL P.C.B.

D

E1

(REP2827D-M)

W601

ELECTRICAL PARTS LOCATION

Ref. No. Lo. No. Ref. No. Lo. No.

EARTH TERMINAL P .C .B.

D

W601 E1

E

Q901
Q902
Q903
Q904

D904
D905
D907
S900
S901
S903
S904
S905
S906
S907
S909
S910
S911
S912
S913
S914

2E 2D

OPERATION P.C.B.

7B
7B
5B
6B
6B
6B
4B
5B
2B
3B
2B
3B
4B
4B
6B
5B
3B
6B
7B
7B

S915

FW901

R900
R901
R902
R903
R904
R905
R906
R908
R909
R910
R911
R914
R915
R916
R917
R924
R925

8B
7A
5B
2B
2B
2B
3B
4B
4B
7B
5B
4B
5B
6B
5B
6B
5B
7B
7B

R916

S913

(COUNTER

Q901

DISPLAY)

C

J

E

B

C

S914

B

R924

Q902

E

R908

J

R925

J

7

FW901

1
2
3
4
5
6
7
8

(COUNTER

RESET)

S915

( OPEN)

8

(REP2827D-M)

A

B

C

DE

F

ELECTRICAL PARTS LOCATION

1

Ref. No. Lo. No.

MECHANISM P.C.B. (DECK 1)

B

IC951
IC952

MECHANSIM P.C.B. (DECK 2)

C

IC971
IC972

3B

3C

3E
3F

Ref. No. Lo. No.

D951
S951

D971

Z971

3A
3B

3D
3E

Ref. No. Lo. No.

S952

S971
S972

3B

3E
3E

Ref. No. Lo. No.

3A

S973
S974

3D
3D

Ref. No. Lo. No.

CS951

S975
S976

3C 3C

3F
3E

Ref. No. Lo. No.

R951S953

CS971

R971

3F
3F

Ref. No. Lo. No.

R953 R954

R973

3A

3D

Ref. No. Lo. No.

R974

3C

3F

2

MECHANSIM P.C.B. (DECK1)

B

J

R953

(REP2132B)

4

3

S952

1

IC951

2

S953

D951

3

SOLENOID

J

S951

1

23456789

R951

IC952

142

Note for IC951and IC952 replacement

Two different types (old or new) parts are mounted on P.C.B.
as for IC951 and 952.

When servicing, care to replace the parts due to those shape.

4

Replacement procedures

Parts No.

Old

0N2180RLC

Mount the parts on given position.
(Printed pattern on P.C.B.)

For IC951: Mount the parts so the cut

New

0N2180RLC1

5

corner is located upper right.
For IC952: Mount the parts so the cut
corner is located lower right.

Direction

CS951

R954

3

Remarks

Refer to
the figure
below.

MECHANSIM P.C.B. (DECK2)

C

S974

SOLENOID

S973

J

D971

R973

(REP2132D)

Z971

7
6
5
4

4

3
2
1

32

S972 S976

1

IC971

J

S971

123456789

R971

IC972

142

CS971

R974

3

S975

J

Note for IC971and IC972 replacement

Two different types (old or new) parts are mounted on P.C.B.
as for IC971 and 972.

When servicing, care to replace the parts due to those shape.
Replacement procedures

Old

New

Parts No.

0N2180RLC

0N2180RLC1

Direction

Mount the parts on given position.
(Printed pattern on P.C.B.)

For IC971: Mount the parts so the cut
corner is located upper right.
For IC972: Mount the parts so the cut
corner is located lower right.

Remarks

Refer to
the figure
below.

(Component side) (Component side)

IC951

Old Old Old

14

23

New New New

14

23

2
3

New

0N2180RLC 1

4

1

3

2

23

1

4

1
4

IC952

New

12
43

6

Old

2

7

3

Old

0N2180RLC

4

1

8

23

1

4

3

2

IC972

1
4

Old

0N2180RLC

4

1

23

1

4

12
43

3

2

IC971

14

23

New

0N2180RLC 1

4

1

3

2

23

1

4

14

23

No.1

4

3

2

1

3

2

4

1

CXA1552M-T4
MC14066BFEL
M38503M2400F

16PIN
14PIN
42PIN

BA7755AF CXA1998BQT6 0N2180RLC1

24

8

5

1

4

25

36
37

48

13
12

1

2SD1450RSTA

E

C

B

2SB621ARSTA
2SD592ARSTA

E

C

B

MA165TA

A

A

Anode

Ca

Ca

Cathode

B

E

MA4051MTA
MA4056MTA

A

A

Anode

C

Ca

Ca

Cathode

2SD1819ARTX
2SD1328STXRA
DTA143EUT106
DTC114EUT106
DTC143EUT106
DTC144EUT106

SML79455C

Anode

A

Anode

Ca

A

Cathode

A

Ca

2SC3940AQSTA

2SD2144STA

2SJ164QTA
2SJ164RTA

E

C

B

B

C

E

D

G

S

MA111TX

Ca

A

A

A

Ca