background image
SERVICE MANUAL
CD RECEIVER
No.49541
Feb. 2000
COPYRIGHT
2000 VICTOR COMPANY OF JAPAN, LTD.
This service manual is made from 100% recycled paper.
Printed in Japan
200002(V)
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION,10-1,1Chome,Ohwatari-machi,Maebashi-city,Japan
KD-S676R / KD-S673R
(No.49541)
KD-S676R/KD-S673R
KD-S676R/KD-S673R
Area Suffix
E ---- Continental Europe
Contents
Safety precaution
1-2
Instructions
1-3~15
Location of main parts
2-1
Disassembly method
2-2
Adjustment method
2-7
Flow of functional operation
until TOC read
2-8
Maintenance of laser pickup
2-10
Description of major ICs
2-11
Block diagram
2-24
Standard schematic diagrams
2-25
Printed circuit board
2-28
Parts list
3-1~11
COMPACT
DIGITAL AUDIO
ATT
FUNC
BAND
PROG
PRESET
DISC
DISC
Model
KD-S676
KD-S673
Illumination
color
Green
Umber
DISP
TP
RDS
PTY
DISP
TP
RDS
PTY


background image
! 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.


background image
KD-S676R/KD-S673R
2-1
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
Pickup unit
Damper
Feed motor
Spindle motor


background image
KD-S676R/KD-S673R
2-2
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 button 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
Bottom cover
Front chassis


background image
KD-S676R/KD-S673R
2-3
Removing the main amplifier board
(See Fig.5 and 6)
1.
2.
3.
4.
5.
Remove the front chassis.
Remove the bottom cover.
Remove the two screws B attaching the main
amplifier board assembly on the bottom of the body.
Remove the three screws C attaching the main
amplifier board assembly on the back of the body.
Disconnect connector CN501 on the main amplifier
board assembly from the CD mechanism assembly.
Removing the CD mechanism assembly
(See Fig.7)
1.
2.
3.
4.
Remove the front chassis.
Remove the bottom cover.
Remove the main amplifier board assembly.
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.
2.
3.
Remove the front chassis.
Remove the four screws E attaching the rear cover
on the back of the front panel unit.
Remove the control switch board from the front
panel unit.
C
Fig.5
Fig. 6
B
B
C
C
CD mechanism assembly
D
D
D
Top cover
Fig. 7
E
E
E
E
Fig. 8
Fig. 9
Control switch board
CN501
Main amplifier board