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2

This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.

Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C

during repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering

or unsoldering.

The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.

The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.

Power requirements
Thai model:

220 V AC, 50/60 Hz

Other models:

120 V, 220 V or
230 – 240 V AC, 50/60 Hz
Adjustable with voltage selector

Power consumption

240 W

Dimensions (w/h/d)

Approx. 250 x 375 x 395 mm

Mass

Approx. 13.0 kg

Supplied accessories:

AM loop antenna (1)
FM lead antenna (1)
Remote Commander (1)
Batteries (2)
Video cable (1)
Speaker cords (4)
Front speaker pads (8)

Design and specifications are subject to change
without notice.

3

— BACK PANEL —

······························································· 4

·········································································· 5

3-1.

Case ···················································································· 8

3-2.

Front Panel Section ···························································· 8

3-3.

Tape Mechanism Deck Section (TCM-230AWR12) and
MIC Board ·········································································· 9

3-4.

Back Panel Section ····························································· 9

3-5.

Main Board, Front AMP Board ········································ 10

3-6.

CD Base Unit (BU-K2BD37A) ········································ 10

3-7.

CD Mechanism Deck Section (CDM53F-K2BD37A) ····· 11

3-8.

Fitting Base (Guide) Assy, Bracket (Chassis) and
Fitting Base (Magnet) Assy ·············································· 11

3-9.

Tray (Sub) ········································································· 12

3-10. Chassis (Mold B) Section, Stocker Section and

Slider (Selection) ······························································ 12

3-11. Gears Installation ······························································ 13
3-12. Slider (Selection) Installation ··········································· 13
3-13. Stocker Section Installation ·············································· 14
3-14. Chassis (Mold B) Section Installation ······························ 14

···································································· 15

····························· 20

······························· 20

7-1.

Circuit Board Location ····················································· 25

7-2.

Block Diagrams ································································ 28

7-3.

Printed Wiring Board – BD Section – ······························ 32

7-4.

Schematic Diagram – BD Section – ································· 33

7-5.

Printed Wiring Board – Video Section – ·························· 34

7-6.

Schematic Diagram – Video Section (1/3) – ···················· 35

7-7.

Schematic Diagram – Video Section (2/3) – ···················· 36

7-8.

Schematic Diagram – Video Section (3/3) – ···················· 37

7-9.

Printed Wiring Board – Deck Section – ··························· 38

7-10. Schematic Diagram – Deck Section – ······························ 39
7-11. Printed Wiring Board – Main Section – ··························· 40
7-12. Schematic Diagram – Main (1/3) Section – ····················· 41
7-13. Schematic Diagram – Main (2/3) Section – ····················· 42
7-14. Schematic Diagram – Main (3/3) Section – ····················· 43
7-15. Printed Wiring Board – AMP Section – ··························· 44
7-16. Schematic Diagram – AMP Section – ······························ 45
7-17. Printed Wiring Board – Panel Section – ··························· 46
7-18. Schematic Diagram – Panel Section – ····························· 47
7-19. Printed Wiring Board  – Switch Section – ······················· 48
7-20. Schematic Diagram – Switch Section – ··························· 49
7-21. Printed Wiring Board – CD Mechanism Section – ·········· 50
7-22. Schematic Diagram – CD Mechanism Section – ············· 51
7-23. Printed Wiring Board – Power Supply Section – ············· 52
7-24. Schematic Diagram – Power Supply Section – ················ 53
7-25. Printed Wiring Board – MIC Section – ···························· 54
7-26. Schematic Diagram – MIC Section – ······························· 54
7-27. Printed Wiring Board – Leaf SW Section – ····················· 55
7-28. Schematic Diagram – Leaf SW Section – ························ 55
7-29. IC Block Diagrams ··························································· 56
7-30. IC Pin Descriptions ·························································· 58

8-1.

Back Panel Section ··························································· 69

8-2.

Front Panel Section ·························································· 70

8-3.

Chassis Section ································································· 71

8-4.

CD Mechanism Deck Section-1 (CDM53F-K2BD37A) ·· 72

8-5.

CD Mechanism Deck Section-2 (CDM53F-K2BD37A) ·· 73

8-6.

Base Unit Section (BU-K2BD37A) ································· 74

8-7.

Tape Mechanism Deck Section-1 (TCM-230AWR12) ···· 75

8-8.

Tape Mechanism Deck Section-2 (TCM-230AWR12) ···· 76

······································· 78

• Abbreviation

SP

: Singapore model

MY

: Malaysia model

HK

: Hong Kong model

TH

: Thai model

EA

: Saudi Arabia model

SP, MY models

HK model

TH model

EA model

4-226-747-3

s

4-226-747-4

s

4-226-747-5

s

4-226-747-6

s

4

This model has the self-diagnosis function for the VIDEO and AUDIO decoder sections.
Connecting to the LED between TP522 and TP523 on the VIDEO BOARD.
Immediately after the power on, the self-diagnosis function searches each operation of IC’s around the mechanism control microcomputer
(IC701). and TP5
The results can be checked by LED of the VIDEO board.

Oscilloscope (Waveform)

Symptom

No error

MPEG decoder (IC505)
error

MPEG decoder (IC505)
or
DRAM (IC507) error

CN503

CN701

Jig (J-2501-076-A)

Jig (J-2501-165-A)

Jig (J-2501-167-A)

Jig (J-2501-050-A)

5

1

?/1 button and indicator

2

TAPE A h button and indicator

3

TAPE A H button and indicator

4

TAPE B h button and indicator

5

TAPE B H button and indicator

6

x button

7

CD indicator

8

SOUND MODE indicator

9

SET UP MODE indicator

q;

CINEMA SPACE button and indicator

qa

V-GROOVE button and indicator

qs

MODE SELECT button

qd

PUSH ENTER button/Multi stick

qf

TUNER/BAND button

qg

u button

qh

VOLUME knob

qj

Z 1 to Z 5 buttons

qk

DISC 1 to DISC 5 buttons

ql

PHONES jack

w;

PREVIOUS button

wa

NEXT button

ws

RETURN button

wd

SELECT button

wf

FUNCTION button

wg

DISPLAY button

wh

TIMER SELECT indicator

wj

. button

wk

> button

wl

m button

e;

M button

ea

GROOVE EX button

es

GROOVE button

ed

TAPE B Z button

ef

DISC 1 to DISC 5 indicator

eg

MIC 2 jack

eh

MIC 1 jack

ej

MIC VOL knob

ek

ECHO VOL knob

el

TAPE A Z button

r;

REC PAUSE/START button

ra

HI-DUB button

rs

CD SYNC button

1

2

wj wk wl e;

3 4 5 6 7 89

rs

r;

eg

eh

ej

ek

ra

qk

ql

w;

wa

ws

wd

wf

wh

wg

0

qd

qh

qg

qf

qa
qs

qj

ef

ea

es

ed

el