2000 VICTOR COMPANY OF JAPAN, LTD.
Preventing static electricity
Flow of functional operation unit TOC read
Maintenance of laser pickup
Description of major ICs
This service manual is printed on 100% recycled paper.
! CAUTION 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.
! CAUTION Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.
CD mechanism ass'y
Feed motor ass'y
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
(conductive sheet) or iron plate
Anti-static wrist strap
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.
Removing the front panel unit (See Fig. 1, 2)
1.Press the Eject button to open the front panel unit
2.Push and open the right and left open/close shaft arms
outward to remove the shaft.
3.Remove the front panel unit from the same side as the
shaft was removed.
1.Remove the front panel unit.
2.Remove the two screws A attaching the front chassis
3.Remove the four ribs a attaching the front chassis
assembly to the chassis.
Removing the front chassis assembly (See Fig. 3, 4)
Removing the bottom cover assembly
(See Fig. 5)
Turn the unit upside down,then insert and turn to
b the screwdriver to remove the bottom cover.
Front panel unit
1.Remove three screws E retaining the rear panel to the
2.Remove one screw C retaining the IC to the heat sink.
3.Remove two screws D retaining the main board.
4.Lift up the main board to remove it.
5.Remove two screws B to remove the heat sink.
Removing the main board(wiht rear panel)
(See Fig. 6, Fig. 7)
Remove five screws K retaining the rear cover.
Front panel unit (See Fig.9)
Remove three mechanism mounting screws J retaining the
CD mechanism assembly (See Fig. 8)
1.Remove one screw I to remove the IC bracket.
2.Remove one screw F to remove the line-out jack.
3.Remove one screw G to remove the antenna jack.
Removing the rear bracket (See Fig. 7)