JVC KD-S570, KD-S620 Service Manual
KD-S570 / KD-S620
SERVICE MANUAL
CD RECEIVER
KD-S570 / KD-S620
KD-S620
KD-S620KD-S620
Contents
31
KD-S570
Model
Remote
control unit
KD-S620
KD-S570
Safety precaution
Location of main parts
Disassembly method
Adjustment method
Flow of functional operation until TOC read
Maintenance of laser pickup
Description of major ICs
KD-S570KD-S570
COMPACT
DIGITAL AUDIO
Area Suffix
J ---- Northern America
1-2
1-3
1-4
1-9
1-10
1-12
1-13
This service manual is printed on 100% recycled paper.
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
No.49581
Dec. 2000
KD-S570/KD-S620
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
Location of main parts
Control unit
Display
KD-S570/KD-S620
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
1-3
KD-S570/KD-S620
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.
1-4
c
Regulator board
d
e
Fig. 4
KD-S570/KD-S620
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
1-5
KD-S570/KD-S620
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
1-6
Flame
Fig.4
KD-S570/KD-S620
Removing the loading motor
(See Fig.3 to 5)
Prior to performing the following procedure, remove
the CD mechanism control board.
Remove the two springs k attaching the CD mechanism
ass’y and the front bracket.
Remove the two screws G and the front bracket
while pulling the flame outward.
Remove the belt and the screw H from the loading
motor.
Removing the CD mechanism ass’y
(See Fig.1, 6 to 9)
CD mechanism ass’y
I
Flame
Loading motor
m
H
Belt
Fig.5
Damper bracket
m
I
Fig.6
I
I
Prior to performing the following procedure, remove
the CD mechanism control PWB and the front
bracket (loading motor).
1.
Remove the three screws I and the damper bracket.
2.
Raise the both sides fix arms and move the fix plates
in the direction of the arrow to place the four shafts l
as shown in Fig.8 and 9.
3.
Remove the CD mechanism ass’y and the two
springs m attaching the flame.
4.
Remove the two screws J and both sides rear
damper brackets from the dampers. Detach the CD
mechanism ass’y from the left side to the right side.
ATTENTION:
The CD mechanism ass’y can be
removed if only the rear damper
bracket on the left side is removed.
Fix plate (L)
l
Fix arm (R)
Fig.7
Rear damper bracket
l
Fig.8
Rear damper bracket
J
Fix plate(R)
J
Fix arm (L)
Damper
Damper
l
l
Fig.9
1-7
KD-S570/KD-S620
Removing the feed motor ass’y
(See Fig.10)
Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor) and the CD mechanism ass’y.
1.
Remove the two screws K and the feed motor ass’y.
Removing the pickup unit
(See Fig.10 and 11)
*Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.
1.
Detach the FD gear part of the pickup unit upward.
Then remove the pickup unit while pulling out the
part n of the FD screw.
Feed motor ass’y
K
FD gear
Nut push spring plate
FD screw
Pickup unit
Fig.10
Part n
Part O
Pickup unit
L
Pickup mount nut
Pickup unit
ATTENTION:
2.
Remove the screw L attaching the nut push spring
plate and the pickup mount nut from the pickup unit.
Pull out the FD screw.
When reattaching the pickuap unit,
reattach the part o of the pickup unit,
then the part n of the FD screw.
Removing the spindle motor
(See Fig.12 and 13)
Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.
1.
Turn up the CD mechanism ass’y and remove the
two springs p on both sides of the clamper arms.
Open the clamper arm upward.
2.
Turn the turn table, and remove the two screws M
and the spindle motor.
FD screw
p
Spindle motor
Fig.11
p
Fig.12
M
1-8
M
Fig.13
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