STR-DE197 (serv.man2) - Sony Audio Service Manual (repair manual). Page 3

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STR-DE197

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

for 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.

•

f

: internal component.

•

2

: nonflammable resistor.

•

1

: fusible resistor.

•

C

: panel designation.

•

A

: B+ Line.

•

B

: B– Line.

• Voltage and waveforms are dc with respect to ground

under no-signal (detuned) conditions.
no mark : FM

• 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.

F

: TUNER (FM/AM)

L

: VIDEO (AUDIO)

J

: CD (ANALOG)

• Abbreviation

CND : Canadian model.

• ((      )): Page of Supplement-1.

• X

: parts extracted from the component side.

•

f

: internal component.

•

: Pattern from the side which enables seeing.

•

Abbreviation
CND : Canadian model.

• ((      )): Page of Supplement-1.

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.