DOWNLOAD Sony SCD-XA777ES Service Manual ↓ Size: 12.67 MB | Pages: 127 in PDF or view online for FREE

(ECN-CDB04047)

US Model

Canadian Model

AEP Model

In this set, AC, A-POWER, D.OUT, D-POWER and MOTHER boards
have been changed in the midway of production.
Printed wiring boards and schematic diagrams of new type, and changed
parts list are described in this supplement-1.
Refer to original service manual for other information.

.....

2

2-1. Note for Printed Wiring Boards and

Schematic Diagrams .......................................................

2

2-2. Printed Wiring Board  – D.OUT Board – .......................

3

2-3. Schematic Diagram  – D.OUT Board – ..........................

3

2-4. Printed Wiring Board

– MOTHER Board (Component Side) – ........................

4

2-5. Printed Wiring Board

– MOTHER Board (Conductor Side) – ..........................

5

2-6. Schematic Diagram  – MOTHER Board (1/2) – ............

6

2-7. Schematic Diagram  – MOTHER Board (2/2) – ............

7

2-8. Printed Wiring Board  – A-POWER Board – .................

8

2-9. Schematic Diagram – A-POWER Board – .....................

9

2-10. Printed Wiring Board  – D-POWER Board – ................. 10
2-11. Schematic Diagram – D-POWER Board – .................... 11
2-12. Printed Wiring Boards  – AC/AC SW Boards – ............. 12
2-13. Schematic Diagram – AC/AC SW Boards – .................. 13

............................... 14

2

2

Note on Printed Wiring Board:
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side) the parts face are indicated.

• Indication of transistor

Note on Schematic Diagram:
• All capacitors are in 

µ

F unless otherwise noted.  pF: 

µµ

F

50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in 

Ω

 and 

1

/

4

 

W or less unless otherwise

specified.

•

5

: fusible resistor.

•

C

: panel designation.

•

A

: B+ Line.

•

B

: B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.
no mark : CD PLAY (ANALOG OUT)

〈〈

 

〉〉

: CD PLAY (DIGITAL OUT)

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-
tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

J

: SACD PLAY

c

: CD PLAY (ANALOG OUT)

I

: CD PLAY (DIGITAL OUT)

C

B

These are omitted.

E

Q

Note:
The components identi-
fied by mark 

0

 or dotted

line with mark 

0

 are criti-

cal for safety.
Replace only with part
number specified.

Note:
Les composants identifiés par
une marque 

0

 sont critiques

pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.

3

3

R442

R441

IC442

C448

IC441

C446

C442

C444

C445

C443

C447

C441

J391

T441

CN441

75

220

GP1F38T

10

50V

100p

1

0.1

0.1

100p

0.1

0.1

3P

GND

D/O

(CHASSIS)

(CHASSIS)

(CHASSIS)

DIGITAL(CD)

OUT

OPTICAL

3.3VD

DIGITAL(CD)

OUT

COAXIAL

WAVE SHAPER

OPTICAL

TRANSCEIVER

C444

C446

C441

C447

T441

C445

IC442

J391

LP392

LP391

C442

CN441

C448

R442

R441

C443

D.OUT BOARD

(CONDUCTOR SIDE)

1-682-049-

12

(12)

3

D

MAIN

BOARD

CN907

4 1

5 8

COAXIAL

OPTICAL

DIGITAL (CD)

OUT

IC442

D.OUT BOARD

(COMPONENT SIDE)

1-682-049-

12

(12)

4

4

MOTHER BOARD

(COMPONENT SIDE)

1-682-045-

12

(12)

B

C

D

E

A

1

2

3

4

5

6

7

8

9

10

11