JVC KD-S611 Service Manual
SERVICE MANUAL
CD RECEIVER
KD-S611
KD-S611
Contents
Safety precaution
Preventing static electricity
Important for laser products
Location of main parts
Disassembly method
Adjustment method
1-2
1-3
1-4
1-5
1-6
1-11
KD-S61KD-S611
Area Suffix
E ---- Continental Europe
Flow of functional operation
unit TOC read
Maintenance of laser pickup
Description of major ICs
COMPACT
DIGITAL AUDIO
1-12
1-14
1-15
This service manual is printed on 100% recycled paper.
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
No.49590
Jan. 2001
KD-S611
Safety precaution
!
!
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.
Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.
1-2
KD-S611
Preventing 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.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
1.1.1. Ground the workbench
1. 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.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
1.1.3. 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.
1.2. 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
Short circuit land
FD screw
Feed motor ass’y
Shorting
FD gear
Pickup unit
1-3
KD-S611
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.
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.
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.
CAUTION
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
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.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
CLASS 1
LASER PRODUCT
DANGER : Invisibie laser
radiation when open and
interlock or defeated.
AVOID DIRECT EXPOSURE
TO BEAM (e)
ADVARSEL :Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude
af funktion. Undgå udsæt
telse for stråling. (f)
VARNING : Osynlig laserstrålning är denna del
är öppnad och spårren är
urkopplad. Betrakta ej
strålen. (s)
VARO : Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle
lasersäteilylle.Älä katso
säteeseen. (d)
1-4
Location of main parts
Control unit
Display
KD-S611
LED & key control board
Main uni
CD mechanism
t
Main board
Mechanism relay board
Power IC
ISO connector
Main board
Loading motor
Antenna jack
Tuner
pack
Connector to controller
Damper
Optical pick up unit
Spindle motor
Feed motor
Damper
1-5
KD-S611
Disassembly method
Removing the front panel unit
(See Fig.1)
1. Press the release switch and remove the front
panel unit in the direction of the arrow.
Fig.1
Removing the front chassis (See Fig.2)
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.
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.
A
a
a
Front chassis
A
b
b
Fig.2
A
Heat sink
Fig. 3
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.
1-6
c
e
Regulator board
d
Fig. 4
KD-S611
Removing the main amplifier board
(See Fig.5 and 6)
1.
Remove the front chassis.
2.
Remove the bottom cover.
3.
Remove the two screws B attaching the main
amplifier board assembly on the bottom of the body.
4.
Remove the three screws C attaching the main
amplifier board assembly on the back of the body.
5.
Disconnect connector CN501 on the main amplifier
board assembly from the CD mechanism assembly.
Main amplifier board
B
C
CN501
B
Fig.5
C
C
Fig. 6
Removing the CD mechanism assembly
(See Fig.7)
1.
Remove the front chassis.
2.
Remove the bottom cover.
3.
Remove the main amplifier board assembly.
4.
Remove the three screws D attaching the CD
mechanism assembly from the top cover.
Removing the control switch board
(See Fig.8 and 9)
1.
Remove the front chassis.
2.
Remove the four screws E attaching the rear cover
on the back of the front panel unit.
3.
Remove the control switch board from the front
panel unit.
CD mechanism assembly
Top cover
D
E
E
D
Fig. 7
E
Fig. 8
Control switch board
D
E
Fig. 9
1-7
KD-S611
Removing the CD mechanism control
board(See Fig.1 and 2)
Unsolder the part f and g on the CD mechanism
control board.
Remove the stator fixing the CD mechanism control
board and the damper bracket (To remove the stator
smoothly, pick up the center part).
Remove the screw F attaching the CD mechanism
control board.
Remove the CD mechanism control board in the
direction of the arrow while releasing it from the two
damper bracket slots i and the front bracket slot j.
Disconnect the flexible wire from connector on the
pickup unit.
ATTENTION:
Turn the FD gear in the direction of the
arrow to move the entire pickup unit to
the appropriate position where the
flexible wire of the CD mechanism unit
can be disconnected easily (Refer to
Fig.2).
CD mechanism ass’y
m
Front bracket
Damper bracket
I
g
F
Fig.1
Pickup unit
I
j
Flexible wire
f
m
h
I
i
CD mechanism
control board
Shift the lock
FD gear
k
G
Loading motor
Pull outward
Fig.2
CD mechanism control board
Front bracket
Fig.3
Front bracket
k
G
Pull outward
1-8
Flame
Fig.4
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