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SERVICE MANUAL
CD RECEIVER
No.49740
May. 2002
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
KD-SX927R
KD-SX927R
Contents
Safety precaution
Preventing static electricity
Important of laser products
Disassembly method
Adjustment method
1-2
1-3
1-4
1-5
1-19
Flow of functional
operation unit TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-20
1-22
1-22
1-23
KD-SX992R
EQ
TP
PTY
DAB
SOUND
VOL
VOL
SOURCE
R
F
U
D
ATT
Area Suffix
EE ---- Russian Federation


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1-2
KD-SX927R
!
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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1-3
KD-SX927R
Connector board
DET switch
Pickup
Pickup
Short-circuit
Joints b
Short-circuit point
(Soldering)
Flexible wire
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
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate


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1-4
KD-SX927R
Important for laser products
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO
: Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.
! CAUTION
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
DANGER : Invisible laser
radiation when open and
interlock or defeated.
AVOID DIRECT EXPOSURE
TO BEAM
(e)
VARNING : Osynlig laser-
strålning är denna del
är öppnad och spårren är
urkopplad. Betrakta ej
strålen.
(s)
VARO : Avattaessa ja suo-
jalukitus ohitettaessa olet
alttiina näkymättömälle
lasersäteilylle.Älä katso
säteeseen.
(d)
ADVARSEL :Usynlig laser-
stråling ved åbning , når
sikkerhedsafbrydere er ude
af funktion. Undgå udsæt
telse for stråling.
(f)
CLASS 1
LASER PRODUCT


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1-5
KD-SX927R
Press the release switch and remove the front panel
unit in the direction of the arrow.
1.
Disassembly method
Removing the front panel unit
(See Fig.1)
Turn the body upside down.
Insert a screwdriver to the two joints a and two joints
b on both sides of the body and the joint c on the
back of the body, then detach the bottom cover from
the body.
1.
2.
Removing the bottom cover
(See Fig.2,3)
When disengaging the joint c using a
screwdriver, do not damage or break the
board.
CAUTION:
Prior to performing the following procedure, remove
the bottom cover.
Remove the two screws A attaching the front
chassis.
Remove the two screws B on each side of the body.
Release the two joints d and the two joints e on the
sides. remove the front chassis toward the front.
1.
2.
3.
Removing the front chassis (See Fig.4,5)
Fig.4
Fig.1
Fig. 5
Front chassis
A
B
Front chassis
Joint d
Joint d
Joint e
Joint e
Fig. 2
Bottom cover
Joint a
Joint b
Joint c
Fig. 3
Bottom cover
Joint a
Joint b
Joint c
Front panel assembly
Eject button