JVC KD-SH9101 User manual

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD. No.49841
2003/5
CD RECEIVER
4984120035KD-SH9101
TABLE OF CONTENTS
1Precautions... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . ..1-3
2Disassembly method .. . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . ...... . .. . ... . ..1-5
3Adjustment. . .. . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .1- 29
4Description ofmajorICs... . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .. . ... . .1- 35
Detachable
ANGLE
RM-RK100
CD
FM
AM
CH
AUX SEL
VOLUME
R D
ATT
DAB
DISC
PRESET PRESET
DISC
EQ
KD-SH9101
MOSFET
3456 M21
D
SRC
DISP
ATT
SEL
T/P
MODE
E ------ ContinentalEurope
EX --------- Central Europe
Area Suffix
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1-2 (No.49841)
SPECIFICATION
Design and specifications are subject to change without notice.
AUDIO
AMPLIFIER
SECTION
Maximum Power Output Front 50 W per channel
Rear 50 W per channel
Continuous Power Output
(RMS)
Front 19 W per channel into 4Ω, 40 Hz to 20 000 Hz at
no more than 0.8% total harmonic distortion.
Rear 19 W per channel into 4Ω, 40 Hz to 20 000 Hz at
no more than 0.8% total harmonic distortion.
Load Impedance 4Ω(4Ωto 8Ωallowance)
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 kΩload
Line-Out Level/Impedance 4.0 V/20 kΩload (full scale)
Output Impedance 1 kΩ
TUNER
SECTION
Frequency Range FM 87.5 MHz to 108.0 MHz
AM (MW) 522 kHz to 1 620 kHz
(LW) 144 kHz to 279 kHz
[FM Tuner]
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
[MW Tuner] Sensitivity 20 µV
Selectivity 35 dB
[LW Tuner] Sensitivity 50 µV
CD PLAYER
SECTION
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 320 Kbps
WMA(Windows Media(R) Audio)
Max. Bit rate 192 Kbps
GENERAL
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 x H x D) Installation Size: 182 mm x 52 mm x 161 mm
Panel Size 188 mm x 58 mm x 17 mm
Mass 1.8 kg (excluding accessories)
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(No.49841)1-3
SECTION 1
Precautions
1.1 Safety 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.
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TEL 13942296513 QQ 376315150 892498299
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1-4 (No.49841)
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 diode) 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 sheet) 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.
(3) Handling the optical pickup
• 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.)
• 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 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.
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 assembly, be sure to remove solder from the short land after connecting the flexible wire.
1M
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
Pickup
Short-circuit point
(Soldering)
Flexible wire
Pickup
Short-circuit point
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(No.49841)1-5
SECTION 2
Disassembly method
2.1 Main body section
2.1.1 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.
Fig.1
Front panel assembly
Detach button
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1-6 (No.49841)
2.1.2 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 the two screws Aattaching the top chassis from
the top side of the main body. (See Fig.3.)
(3) Remove the three screws Battaching the top chassis from
the both sides of the main body. (See Figs.4 and 5.)
(4) Remove the screw Cand three screws Dattaching the heat
sink from the left side of the main body. (See Fig.5.)
(5) Remove the two screws Eand screw Fattaching 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.
Fig.2
Fig.3
Fig.4
Fig.5
Fig.6
Front panel assembly
Top chassis
Eject button
Front panel assembly
Top chassis
AA
Top chassis
BB
Top chassis
Heat sink BD
C
EF
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TEL 13942296513 QQ 376315150 892498299
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(No.49841)1-7
2.1.3 Removing the mecha control board
(See Fig.7)
• Prior to performing the following procedures, remove the top
chassis.
(1) Disconnect the card wire from the connector CN601 on the
mecha control board.
(2) Remove the five screws Gattaching the mecha control
board.
(3) Release the joints aand b, remove the mecha control
board.
Fig.7
2.1.4 Removing the CD mechanism assembly
(See Fig.8)
• Prior to performing the following procedure, remove the top
chassis.
(1) Remove the three screws Hfrom the inside of the top chas-
sis and remove the CD mechanism assembly.
Fig.8
CN601
b
a
G
G
Mecha control board
H
HH
CD mechanism assembly
Top chassis
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TEL 13942296513 QQ 376315150 892498299
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1-8 (No.49841)
2.1.5 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 Jattaching 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 Kattaching the motor assembly to
the motor bracket. (See Fig.11.)
Fig.9
Fig.10
Fig.11
Spring Motor braket
CN982
Motor braket
Main board
J
KMotor braket
Motor assembly
Clutch assembly
Washer
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(No.49841)1-9
2.1.6 Removing the main board
(See Figs.12 to 16)
• Prior to performing the following procedures, remove the top
chassis and motor assembly.
(1) Disconnect 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 Lattaching 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 Mattaching the rear panel to the bottom
cover from the back side of the main body. (See Fig.14.)
(6) Remove the three screws Nattaching the main 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 Pand Qattaching the rear heat sink.
(See Fig.16.)
(8) Remove the three screws Rand screw Sattaching the rear
panel, then remove the main board. (See Fig.16.)
Fig.12
Fig.13
Fig.14
Fig.15
Fig.16
L
L
M
NN
Main board
CN991 Rod gear
CN703
A
rm
brackets (L)
Arm
brackets (R)
Rod gear
Main board
Arm brackets (L)
A
rm brackets (R)
M
Rear panel Bottom cover
Joint c
Joint c
Main board
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P
R
S
Rear panel Rear heat sink
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1-10 (No.49841)
2.1.7 Removing the lifter switch board
(See Fig.17)
• Prior to performing the following procedure, remove the top
chassis, motor assembly and main board.
(1) Remove the two screws Tattaching the lifter switch board
to the bottom chassis.
Fig.17
T
Bottom chassis
Lifter switch board
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(No.49841)1-11
2.1.8 Removing the lifter board
(See Figs.18 to 24)
• Prior to performing the following procedures, remove the top
chassis and front panel assembly.
• Remove the four screws Uattaching the front bracket on the
both sides of the main body. (See Figs.19 and 20.)
• Push the pin of the joint don the front side of the front bracket
to release the detach lever. (See Fig.21.)
• Remove the screw Vattaching the connector cover in the rear
side of the front bracket. (See Fig.22.)
• Release the two joints fwhile pushing them from the front side,
and then move the connector cover in the direction of the arrow
and release the eight joints e. (See Figs.22 and 23.)
• Remove the two screws Wattaching the lifter board from the
front side of the main body. (See Fig.24.)
(1) Disconnect the flexible wire from the connector CN991 on
the main board. (See Fig.18.)
Fig.18
Fig.19
Fig.20
Fig.21
Fig.22
CN991 Front bracket
Main board
U
Front bracket
U
Front bracket
Datch leve
r
Joint d
Front bracket
Joint eJoint e
Joint e
Joint e
Front bracket
Connector cover
Joints e
Joint f
Joint
f
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(No.49841)1-13
2.1.9 Removing the front board
(See Figs.25 to 28)
• Prior to performing the following procedures, remove the front
panel assembly.
(1) Remove the six screws Xattaching the rear panel to the
front panel assembly. (See Fig.25.)
(2) Pull out the volume knob from the front side of the front
panel assembly. (See Fig.26.)
(3) Release the ten joints gof the front panel and the rear pan-
el. (See Fig.27.)
(4) Take out the front board from the front panel assembly.
(See Fig.28.)
Fig.25
Fig.26
Fig.27
Fig.28
XX
XX
Rear panel
Front panel assembly
Volume knob
Joints gJoints g
Joints g
Rear panel
Joints g
Front board
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TEL 13942296513 QQ 376315150 892498299
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1-14 (No.49841)
2.2 CD Mechanism section
2.2.1 Removing the top cover
(See Figs.1 and 2)
(1) Remove the four screws Aon the both side of the body.
(2) Lift the front side of the top cover and move the top cover
backward to release the two joints a.
Fig.1
Fig.2
A
A
A
Joints a
Top cover
Joints a
Top cover
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TEL 13942296513 QQ 376315150 892498299
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(No.49841)1-15
2.2.2 Removing the connector board
(See Figs.3 to 5)
CAUTION:
Before disconnecting the flexible wire from the pickup, solder
the short-circuit point on the pickup. No observance of this in-
struction may cause damage of the pickup.
(1) Remove the screw Bfixing the connector board.
(2) Solder the short-circuit point on the pickup.
(3) Disconnect the flexible wire from the pickup.
(4) Move the connector board in the direction of the arrow to
release the two joints b.
(5) Unsolder the wires on the connector board if necessary.
CAUTION:
Unsolder the short-circuit point after reassembling.
Fig.3
Fig.4
Fig.5
B
Connector board
Pickup
Short-circuit point
Joints b
Wires
Pickup
Short-circuit point
(Soldering)
Flexible wire
B
Flexible wire
Connector board
Frame
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TEL 13942296513 QQ 376315150 892498299
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1-16 (No.49841)
2.2.3 Removing the DET switch
(See Figs.6 and 7)
(1) Extend the two tabs cof the feed sw. holder and pull out
the switch.
(2) Unsolder the DET switch wire if necessary.
Fig.6
Fig.7
Connector
board
DET
switch
Pickup
DET switch Tab c
Tab c
DET switch wire
Feed sw. holder
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

(No.49841)1-17
2.2.4 Removing the chassis unit
(See Figs.8 and 9)
• Prior to performing the following procedure, remove the top
cover and connector board.
(1) Remove the two suspension springs (L) and (R) attaching
the chassis unit to the frame.
CAUTION:
• The shape of the suspension spring (L) and (R) are dif-
ferent. Handle them with care.
• When reassembling, make sure that the three shafts
on the underside of the chassis unit are inserted to the
dampers certainly.
Fig.8
Fig.9
Suspension spring (L)
Suspension spring (L)
Suspension spring (R)
Suspension spring (R)
Chassis unit
Frame
Chassis unit
Frame
Shafts
Shaft
Dampe
r
Damper
Damper
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

1-18 (No.49841)
2.2.5 Removing the clamper assembly
(See Figs.10 and 11)
• Prior to performing the following procedure, remove the top
cover.
(1) Remove the clamper arm spring.
(2) Move the clamper assembly in the direction of the arrow to
release the two joints d.
Fig.10
Fig.11
Clamper arm
spring
Chassis rivet
assembly
Joint d
Joint d Clamper assembly
Clamper arm spring
Clamper assembly
Joint d
Joint d
Chassis rivet assembly
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

(No.49841)1-19
2.2.6 Removing the loading / feed motor assembly
(See Figs.12 and 13)
• Prior to performing the following procedure, remove the top
cover, connector board and chassis unit.
(1) Remove the screw Cand move the loading / feed motor as-
sembly in the direction of the arrow to remove it from the
chassis rivet assembly.
(2) Disconnect the wire from the loading / feed motor assembly
if necessary.
CAUTION:
When reassembling, connect the wire from the loading /
feed motor assembly to the flame as shown in Fig.12.
Fig.12
Fig.13
Loading / feed motor assembly
Loading / feed motor assembly
C
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

1-20 (No.49841)
2.2.7 Removing the pickup unit
(See Figs.14 to 18)
• Prior to performing the following procedure, remove the top
cover, connector board and chassis unit.
(1) Remove the screw Dand pull out the pu. shaft holder from
the pu. shaft.
(2) Remove the screw Eattaching the feed sw. holder.
(3) Move the part eof the pickup unit upward with the pu. shaft
and the feed sw. holder, then release the joint fof the feed
sw. holder in the direction of the arrow. The joint gof the
pickup unit and the feed rack is released, and the feed sw.
holder comes off.
(4) Remove the pu. shaft from the pickup unit.
(5) Remove the screw Fattaching the feed rack to the pickup
unit.
2.2.8 Reattaching the pickup unit
(See Figs.14 to 17)
(1) Reattach the feed rack to the pickup unit using the screw F.
(2) Reattach the feed sw. holder to the feed rack while setting
the joint gto the slot of the feed rack and setting the joint f
of the feed rack to the switch of the feed sw. holder correct-
ly.
(3) As the feed sw. holder is temporarily attached to the pickup
unit, set to the gear of the joint gand to the bending part of
the chassis (joint h) at a time.
CAUTION:
Make sure that the part ion the underside of the feed
rack is certainly inserted to the slot jof the change lock
lever.
(4) Reattach the feed sw. holder using the screw E.
(5) Reattach the pu. shaft to the pickup unit. Reattach the pu.
shaft holder to the pu. shaft using the screw D.
Fig.14
Fig.15
Fig.16
Fig.17
Fig.18
Feed sw. holder
E
D
Joint g
Joint f
Part e
Pickup unit
Pu. shaft holder
Pu. shaft
Feed sw. holder
Part e
Pickup unit
Feed rack
Feed sw. holder
D
E
Joint f
Pu. shaft holde
r
Pu. shaft
Pickup unit
Joint h
Part i
Slot j
Joint g
FFeed rack
Pickup unit
Joint f
Joint g
Feed rack
Pickup unit
Feed sw. holder
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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