HT-BE1, SA-WBE1, SS-BE1 (serv.man2) - Sony Audio Service Manual (repair manual)

1

US Model

Canadian Model

AEP Model

UK Model

E Model

Subject : Change the MAIN BOARD of SA-WBE1.

Printed wiring board and schematic diagram of new type, and changed parts list
are described in this Supplement-1.
When performing service and inspection, check the suffix of the part number of
the MAIN board.

MAIN BOARD Part No.
Former : 1-685-233-12
New

: 1-685-233-14

2

1. Schematic Diagram –Main (1/5) Section– .............................. 3
2. Printed Wiring Board –Main (1/2) Section– ........................... 4
3. Printed Wiring Board –Main (2/2) Section– ........................... 5
4. Schematic Diagram –Main (2/5) Section– .............................. 6
5. Schematic Diagram –Main (3/5) Section– .............................. 7
6. Schematic Diagram –Main (4/5) Section– .............................. 8
7. Schematic Diagram –Main (5/5) Section– .............................. 9
8. Electrical Parts List ................................................................ 10

Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)

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.

•

2

: nonflammable resistor.

•

C

: panel designation.

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
piéce portant le numéro
spécifié.

•

A

: B+ Line.

• Voltage is dc with respect to ground under no-signal

(detuned) condition.

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

Ω

).

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

• Signal path.

F

: LINE

c

: DIGITAL AUDIO (OPTICAL)

J

: DIGITAL AUDIO (COAXIAL)

• Abbreviation

CND : Canadian model.
SP

: Singapore model.

MY

: Malaysia model.

MX

: Mexican model.

• (

) : Page of Service Manual.

((

)) : Page of Supplement-1.

• X

: parts extracted from the component side.

•

: Pattern from the side which enables seeing.

• Abbreviation

CND : Canadian model.
SP

: Singapore model.

MY

: Malaysia model.

MX

: Mexican model.

• (

) : Page of Service Manual.

((

)) : Page of Supplement-1.

3

3

(Page

15)

4

4

D504

A-11

D506

B-8

D507

B-9

D802

C-2

D803

D-2

D804

C-8

D805

B-2

D806

C-2

D807

C-5

D809

D-8

D810

D-8

(D811)

D-2

(D812)

D-3

(D946)

D-3

IC301

E-6

IC302

E-7

IC303

E-7

IC501

B-11

IC502

C-10

IC505

B-9

IC507

D-7

IC508

D-6

IC801

C-3

IC802

B-6

IC803

B-7

IC804

C-7

IC807

B-7

Q301

E-4

Q302

D-4

Q306

G-9

Q307

C-10

Q308

D-10

Q312

D-6

Q313

D-6

Q314

D-6

Q503

B-11

Q504

C-11

Q505

B-11

Q506

B-11

Q507

A-11

Q801

B-2

Q803

C-2

Q804

C-2

Q805

C-2

Q907

D-2

Ref. No.

Location

(

) : AEP, UK, Singapore,

Malaysia model

<

> : US, Canadian,

Mexican model