CFS-B15 (serv.man4) - Sony Audio Service Manual (repair manual). Page 2

2

AUDIO board (1-668-147-11), POWER board (1-668-151-11) and TUNER board (1-668-148-11) has been added.
These boards are used in Thai model only.
This supplement-1 describes printed wiring boards, schematic diagrams and electrical parts list about these boards.
Refer to original service manual (9-923-218-1[ ]) for other information.

Note on Printed Wiring Boards.
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•

: Pattern from the side which enables seeing.

Note on Schematic Diagrams.
• All capacitors are in 

µ

F 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.

•        

f

: internal tolerance.

•

C

: panel designation.

•

A

: B+ Line.

• Power voltage is dc 6 V and fed with regulated dc power supply

from battery terminals.

• Voltages is dc with respect to ground under no-signal (detuned)

conditions.
no mark : FM
(

) : AM

<

> : PB REC

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

Ω

).

Voltage variations may be noted due to normal production toler-
ances.

• Signal path.

F

: FM

E

: PB

a

: REC

The components identi-
fied by mark 

0

  or dot-

ted line with mark 

0

 are

critical for safety.
Replace only with part
number specified.

Les composants identifiés
par une marque 

0

 sont cri-

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