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SERVICE MANUAL
CD CHANGER SYSTEM
No.49706
Feb. 2002
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
CH-PK473R/CH-PK470R
CH-PK473R/CH-PK470R
Area Suffix
CD changer control receiver
This model is combination of the CH-X500, CD Changer and the KS-FX473R/KS-FX470R,
CD changer control receiver in one packing.
Please refer to the service manual of CH-X500(No.49698) and KS-FX473R/KS-FX470R
(No.49689) for items other than this packing .
CH-X500
CD changer
E ------- Continental Europe
EX ----------- Central Europe
CO
MPA
CT
DIS
C
CHA
NG
ER
12Ð
DIS
C
CH
-X5
00
KS-FX473R
KS-FX470R
KS-FX473R
KS-FX470R


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CH-PK473R/CH-PK470R
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49706)
200202
Packing materials parts list
Block No. M
M
M
3
P1
P2
KS-FX473R/KS-FX470R
CH-X500
Item
Parts number
Parts name
Area
A
Parts list (Packing)
Q'ty
Description
Block No. M3MM
P 1
LV33460-007A
LV33460-006A
PACKING CASE
PACKING CASE
1
1
P 2
FSPK3014-001
SPACER
1
CH-PK473R
CH-PK470R


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SERVICE MANUAL
CD CHANGER
No.49698
Feb. 2002
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
CH-X500
CH-X500
Contents
Safety precaution
Preventing static electricity
Disassembly method
Forced eject procedures
1-2
1-3
1-4
1-20
Trouble shooting
Flow of functional
operation until TOC read
Description of major ICs
1-21
1-23
1-27
Area Suffix
E ------- Continental Europe
CO
MP
ACT
DIS
C
CHA
NG
ER
12
ÐD
ISC
CH
-X5
00


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CH-X500
1-2
!
Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Safety precaution
!
Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.


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CH-X500
1-3
Preventing static electricity
1.Grounding to prevent damage by static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
2.About the earth processing for the destruction prevention by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
2-1 Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
2-2 Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.
4.Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
Attention when traverse unit is decomposed
1.Solder is put up before the card wire is removed from connector on
the CD substrate as shown in Figure.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
2.Please remove solder after connecting the card wire with
when you install picking up in the substrate.
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the substrate.
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
Soldering
Pickup unit
Traverse mechanism PCB Ass'y