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3

................................................

4

Location of Controls .......................................................

7

3-1. Disassembly Flow ...........................................................

9

3-2. Case (Side-L/R) ............................................................... 10
3-3. Case (Top) ....................................................................... 10
3-4. Tray Panel ........................................................................ 11
3-5. CD Mechanism Deck (CDM74-F1BD81) ...................... 11
3-6. Front Panel Block ............................................................ 12
3-7. Back Panel Section .......................................................... 12
3-8. MAIN Board ................................................................... 13
3-9. Tape Mechanism Deck (CWM43FR34) ......................... 13
3-10. Table Assy ....................................................................... 14
3-11. MOTOR (TB) Board ....................................................... 14
3-12. MOTOR (LD) Board ....................................................... 15
3-13. Base Unit (BU-F1BD81A) ............................................. 15
3-14. CD Board ......................................................................... 16

.............................................................. 17

CD Section ...................................................................... 21

6-1. Block Diagram  – SERVO Section – .............................. 22
6-2. Block Diagram  – MAIN Section – ................................ 23
6-3. Block Diagram

– PANEL/POWER SUPPLY Section – .......................... 24

6-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 25

6-5. Printed Wiring Board  – CD Board – ............................. 26
6-6. Schematic Diagram  – CD Board – ................................ 27
6-7. Printed Wiring Boards  – CHANGER Section – ............ 28
6-8. Schematic Diagram  – CHANGER Section – ................ 29
6-9. Printed Wiring Boards

– CDMP3 CONNECT/TRANSLATION Boards – ........ 30

6-10. Schematic Diagram

– CDMP3 CONNECT/TRANSLATION Boards – ........ 31

6-11. Schematic Diagram  – MAIN Section (1/4) – ................ 32
6-12. Schematic Diagram  – MAIN Section (2/4) – ................ 33
6-13. Schematic Diagram  – MAIN Section (3/4) – ................ 34
6-14. Schematic Diagram  – MAIN Section (4/4) – ................ 35
6-15. Printed Wiring Boards  – MAIN Section – .................... 36
6-16. Printed Wiring Board  – PANEL Section – .................... 37
6-17. Schematic Diagram  – PANEL Section (1/2) – .............. 38
6-18. Schematic Diagram  – PANEL Section (2/2) – .............. 39
6-19. Printed Wiring Board  – POWER AMP Section –

(AEP, UK, CIS only) ....................................................... 40

6-20. Schematic Diagram  – POWER AMP Section –

(AEP, UK, CIS only) ....................................................... 41

6-21. Printed Wiring Board  – POWER AMP Section –

(E51, MX only) ............................................................... 42

6-22. Schematic Diagram  – POWER AMP Section –

(E51, MX only) ............................................................... 43

6-23. Printed Wiring Boards  – TRANS Section –

(AEP, UK, CIS only) ....................................................... 44

6-24. Schematic Diagram  – TRANS Section –

(AEP, UK, CIS only) ....................................................... 45

6-25. Printed Wiring Boards  – TRANS Section –

(E51, MX only) ............................................................... 46

6-26. Schematic Diagram  – TRANS Section –

(E51, MX only) ............................................................... 47

7-1. Case Section .................................................................... 58
7-2. Tape Mechanism Deck Section (CWM43FR34) ............ 59
7-3. Cassette Box Section ...................................................... 60
7-4. Front Panel Section ......................................................... 61
7-5. Back Panel Section .......................................................... 62
7-6. Chassis Section ............................................................... 63
7-7. CD Mechanism Deck Section-1 (CDM74-F1BD81) ..... 64
7-8. CD Mechanism Deck Section-2 (CDM74-F1BD81) ..... 65
7-9. CD Mechanism Deck Section-3 (CDM74-F1BD81) ..... 66
7-10. Base Unit Section (BU-F1BD81A) ................................ 67

............................... 68

• Abbreviation

E51

: Chilean and Peruvian models

MX

: Mexican model

4

R

L

R

L

PART No.

The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.

Carry out the “S curve check” in “CD section adjustment” and
check that the S curve waveforms is output three times.

•

MODEL

PART No.

AEP, UK models

4-253-949-0

[]

CIS model

4-253-950-0

[]

Chilean and Peruvian models

4-253-951-0

[]

Mexican model

4-255-500-0

[]

5

1

Remove the case (side-L).

2

Turn the loading gear in the direction 
of arrow 

A

.

A

3

Pull-out the disc tray.

CD mechanism deck

stand

CDMP3 CONNECT board

6

MAIN board

PANEL board

front panel section

tape mechanism deck

SUB TRANS board

TRANS board

AMP board

MAIN board

front panel section