DAV-DZ770W, DAV-FX999W, TA-WR3 - Sony Audio Service Manual (repair manual). Page 4

4

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 component.

•

2

: nonflammable resistor.

•

C

: panel designation.

•

A

: B+ Line.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.
no mark: Power on

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

Ω

).

Voltage variations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production
tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F

: AUDIO

• Abbreviation

TW

: Taiwan model

Note on Printed Wiring Boards:
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•        

f

: internal component.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

• Indication of transistor.

C

B

These are omitted.

E

Q

Caution:
Pattern face side:  Parts on the pattern face side seen from
(SIDE A)               the pattern face are indicated.
Parts face side:     Parts on the parts face side seen from
(SIDE B)               the parts face are indicated.

B

C

E

Q

Note: The components identified by mark 

0

 or dotted

line with mark 

0

 are critical for safety.

Replace only with part number specified.