CDX-848X - Sony Car Audio Service Manual (repair manual). Page 46

(ECN-CSA04819)

US Model

AEP Model

UK Model

In this set, RF/LSW boards have been changed in the midway of pro-
duction.
Printed wiring boards and schematic diagrams of new type, and changed
parts list are described in this supplement-1.
Refer to original service manual for other information.

Note on Printed Wiring Board:
•

Y

: parts extracted from the conductor side.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side) the parts face are indicated.

Note on Schematic Diagram:
• All capacitors are in 

µ

F unless otherwise noted.  pF: 

µµ

F

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.

•

A

: B+ Line.

• Power voltage is dc 14.4V and fed with regulated dc power

supply from CD changer controller.

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.
no mark : CD PLAY

∗

: Impossible to measure

• 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.

J

: CD PLAY

Note: The components identified by mark 

0

 or dotted line

with mark 

0

 are critical for safety.

Replace only with part number specified.