JVC KD-SH9101, KD-SH9102, KD-SH9103, KD-SH9104 Service Manual
49841B200311
SERVICE MANUAL
CD RECEIVER
KD-SH9101, KD-SH9102,
KD-SH9103, KD-SH9104
ATT
Detachable
ANGLE
CD
DAB
FM
PRESET
AM
CH
AUX SEL
RM-RK100
EQ
DISC
PRESET
R D
DISC
VOLUME
SRC
D
DISP
ATT
MOSFET
SEL
KD-SH9101
T/P
3456 M21
MODE
Area Suffix
E ------ ContinentalEurope
EX --------- Central Europe
TABLE OF CONTENTS
1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.49841B
2003/11
SPECIFICATION
AUDIO AMPLIFIER SECTION
Maximum Power Output
Continuous Power Output (RMS)
Load Impedance 4Ω (4Ω to 8Ω allowance)
Equalizer Control Range Frequencies: 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 12 kHz
Level ±10 dB
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Line-In Level/Impedance LINE IN 1.5 V/20 kΩ load
Line-Out Level/Impedance 4.0 V/20 kΩ load (full scale)
Output Impedance 1 kΩ
Frequency Range
[FM Tuner]
[MW Tuner]
[LW Tuner] Sensitivity 50 µV
Type Compact disc player
Signal Detection System Non-contact optical pickup (semiconductor laser)
Number of channels 2 channels (stereo)
Frequency Response 5 Hz to 20 000 Hz
Dynamic Range 98 dB
Signal-to-Noise Ratio 102 dB
Wow and Flutter Less than measurable limit
MP3 (MPEG Audio Layer 3) Max.
Bit rate
WMA (Windows Media
Max. Bit rate
Power Requirement Operating Voltage: DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Operating Temperature 0°C to +40°C
Dimensions (W × H × D)
Mass 1.8 kg (excluding accessories)
Design and specifications are subject to change without notice.
(R)
Audio)
Front 50 W per channel
Rear 50 W per channel
Front
Rear
TUNER SECTION
FM 87.5 MHz to 108.0 MHz
AM
Usable Sensitivity 11.3 dBf (1.0µV/75Ω)
50 dB Quieting Sensitivity 16.3 dBf (1.8µV/75Ω)
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 30 dB
Capture Ratio 1.5 dB
Sensitivity 20 µV
Selectivity 35 dB
CD PLAYER SECTION
320 Kbps
192 Kbps
GENERAL
Installation Size: 182 mm × 52 mm × 161 mm
Panel Size: 188 mm × 58 mm × 17 mm
19 W per channel into 4Ω, 40 Hz to 20 000 Hz at no more
than 0.8% total harmonic distortion.
19 W per channel into 4Ω, 40 Hz to 20 000 Hz at no more
than 0.8% total harmonic distortion.
(MW) 522 kHz to 1 620 kHz
(LW) 144 kHz to 279 kHz
1-2 (No.49841B)
1.1 Safety Precautions
SECTION 1
Precautions
!
!
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.
(No.49841B)1-3
1.2 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.
1.2.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser dio de) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sh eet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
1M
Conductive material
(conductive sheet) or iron plate
(3) Handli ng the optical pickup
• In order to maintain quality during transpo rt and before installation, bo th 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.)
• 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.
1.3 Handling the traverse unit (optical pickup)
(1) Do not subject the trav erse 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 adju st the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.4 Attention when traverse unit is decomposed *Please refer to "Disassembly method" in the text for the CD pickup unit.
• Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit.
(If the flexible wire is disconnected without applying solder, the CDpickup may be destroyed by static electricity.)
• In the asse mbly, be sure to remove solder from the short land after connecting the flexible wire.
Short-circuit point
(Soldering)
Flexible wire
1-4 (No.49841B)
Short-circuit point
Pickup
Pickup
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.49841B)1-5
SECTION 3
Disassembly method
3.1 Main body section
3.1.1 Removing the front panel assembly
(See Fig.1)
(1) Push the detach button in the lower right part of the front
panel assembly.
(2) Remove the front panel assembly in the direction of the ar-
row.
Front panel assembly
Detach button
Fig.1
1-6 (No.49841B)
3.1.2 Removing the top chassis
(See Figs.2 to 6)
• Turn on power.
(1) Push the eject button in the upper right part of the front pan-
el assembly to move the front panel assembly as shown in
Fig.2 and turn off power.
(2) Remove th e two screws A attaching the top chassis from
the top side of the main body. (See Fig.3.)
(3) Remove the three screws B attaching the top chassis from
the both sides of the main body. (See Figs.4 and 5.)
(4) Remove the screw C and three screws D attaching the heat
sink from the left side of the main body. (See Fig.5.)
(5) Remove the two screws E an d screw F attaching the top
chassis from the back side of the main body. (See Fig.6.)
(6) Move the top chassis upward and remove it with the CD
mechanism assembly. The connector CN501 on the CD
mechanism assembly is disconnected from the connector
CN981 on the main board.
Top chassis
Front panel assembly
C
Top chassis
BB
Fig.4
Top chassis
Heat sink
Fig.5
Eject button
Fig.2
Top chassis
E
Fig.6
AA
BD
F
Front panel assembly
Fig.3
(No.49841B)1-7
3.1.3 Removing the mecha control board
(See Fig.7)
• Prior to performing the foll owing procedures, remove the top
chassis.
(1) Disconnect the card wire from the connector CN601 on the
mecha control board.
(2) Remove the five screws G attaching the mecha control
board.
(3) Release the joints a and b, remove the mecha control
board.
Mecha control board
G
CN601
3.1.4 Removing the CD mechanism assembly
(See Fig.8)
• Prior to performing the followi ng procedure, remove the top
chassis.
(1) Remove the three screws H from the inside of the top chas-
sis and remove the CD mechanism assembly.
a
Top chassis
b
G
Fig.7
H
1-8 (No.49841B)
HH
CD mechanism assembly
Fig.8
3.1.5 Removing the motor assembly
(See Figs.9 to 11)
• Prior to performing the following procedures, remove the top
chassis.
(1) Remove the spring from the motor bracket. (See Fig.9.)
(2) Disconnect the wire from the connector CN982 on the main
board. (See Fig.10.)
(3) Remove the two screws J attaching the motor bracket.
(See Fig.10.)
(4) Remove the washer attaching the clutch assembly and pull
out the clutch assembly from the shaft. (See Fig.11.)
(5) Remove the two screws K attaching the motor assembly to
the motor bracket. (See Fig.11.)
Main board
Spring
Motor braket
Fig.9
CN982
Clutch assembly
Motor braket
J
Fig.10
Motor braket
K
Motor assembly
Washer
Fig.11
(No.49841B)1-9
3.1.6 Removing the main board
A
A
(See Figs.12 to 16)
• Prior to performing the foll owing procedures, remove the top
chassis and motor assembly.
(1) Disconne ct the flexible wires from the connectors CN703
and CN991 on the main board respectively. (See Fig.12.)
(2) Move the front bracket backward until it stops.
(3) Remove the four screws L attaching the arm brackets (L)
and (R). Move the arm brackets (L) and (R) from the rod
gear. (See Fig.12.)
(4) Remove the rod gear.
(5) Remove the screw M attaching the rear panel to the bottom
cover from the back side of the main body. (See Fig.14.)
(6) Remove th e three screws N attaching the mai n board and
move the main board backwards to release the two joints
c. (The main board will be removed with the rear panel and
rear heat sink) (See Figs.12 and 15.)
(7) Remove the screw P and Q attaching the rear heat sink.
(See Fig.16.)
(8) Remove the three screws R and screw S attaching the rear
panel, then remove the main board. (See Fig.16.)
Rear panel
M
Bottom cover
Fig.14
Joint c
Main board
Joint c
rm
brackets (L)
L
CN703
rm brackets (R)
NN
Main board
Arm
brackets (R)
L
Rod gear
CN991
Fig.12
Arm brackets (L)
M
R
Rear panel
S
Fig.15
P
Q
Rear heat sink
Fig.16
1-10 (No.49841B)
Main board
Rod gear
Fig.13
3.1.7 Removing the lifter switc h bo ar d
(See Fig.17)
• Prior to perfo rming the following procedure, remove the top
chassis, motor assembly and main board.
(1) Remove the two screws T attaching the lifter switch board
to the bottom chassis.
Lifter switch board
Fig.17
Bottom chassis
T
(No.49841B)1-11
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