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SERVICE MANUAL
CD RECEIVER
No.49586
Jan. 2001
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
KD-S5M
KD-S5M
Area Suffix
J
Northerm America
Contents
Safety precaution
1-2
Preventing static electricity
1-3
Location of main parts
1-4
Disassembly method
1-5
Adjustment method
1-10
Flow of functional operation
until TOC read
1-11
Maintenance of laser pickup
1-13
Replacement of laser pickup
1-13
Description of major ICs
1-14
COMPACT
DIGITAL AUDIO


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KD-S5M
1-2
! 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.
Safety precaution
! CAUTION 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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KD-S5M
1-3
Front bracket
CD mechanism
control board
Damper bracket
CD mechanism ass'y
FD screw
Feed motor ass'y
FD gear
Pickup unit
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 material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
Soldering
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.


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KD-S5M
1-4
Main unit
Location of main parts
Control unit
CD mechanism
Display
LED & key control board
Main board
Tuner
pack
Main board
Connector to controller
Power IC
ISO connector
Antenna jack
Loading motor
Mechanism relay board
Damper
Optical pick up unit
Damper
Feed motor
Spindle motor


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KD-S5M
1-5
Disassembly method
Removing the front panel unit
(See Fig.1)
1. Insert a screwdriver to the joints a on the side of the
front chassis and two joints b on the right side, then
detach the front chassis toward the front side.
1. Press the release switch and remove the front
panel unit in the direction of the arrow.
Removing the front chassis (See Fig.2)
Removing the heat sink (See Fig.3)
1. Remove the three screws A attaching the heat sink
on the left side of the body, and remove the heat
sink.
Removing the bottom cover (See Fig.4)
1.
2.
Turn the body upside down.
Insert a screwdriver to the two joints c and two
joints d on both sides of the body and the joint e on
the back of the body, then detach the bottom cover
from the body.
b
a
a
b
A
A
A
Heat sink
c
d
e
Fig.2
Fig.1
Fig. 3
Fig. 4
Regulator board
Front chassis