XM-SW3 - Sony Car Audio Service Manual (repair manual). Page 7

Note:
•  X : Parts extracted from the component side.
• 

 : Pattern from the side which enables seeing.

Note:
•  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 

specifi ed.

•  A : B+ Line.
•  B : B– Line.
•  H : Adjustment for repair.
•  Power voltage is dc 14.4 V and fed with regulated dc 

power supply from +12 V and REM terminals.

•  Voltages are dc with respect to ground under no-signal  

conditions.

•  Voltages are taken with 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

Note: The components identifi ed by mark 0 or dotted 

line with mark 0 are critical for safety. 

 

Replace only with part number specifi ed.

•  Note for Replacement of the Transistors
The transistors Q159, 160, 259, 260, 359, 360, 459 and 460 have 
two different ranks: P rank and Y rank.
The rank of these transistors need to be selected properly accord-
ing to each channel. When replacing any one of these transistors, 
check its rank and replace with the appropriate transistor of the 
same rank.

Rank

Q159, 259, 359, 459

Q160, 260, 360, 460

P

2SC5100-P

(Part No. 8-729-024-79)

2SA1908-P

(Part No. 8-872-024-76)

Y

2SC5100-Y

(Part No. 8-729-024-80)

2SA1908-Y

(Part No. 8-872-024-77)