JVC KD-SH9101 Bedienungsanleitung

SERVICE MANUAL

2003/11

CD RECEIVER

49841B200311 KD-SH9101, KD-SH9102,

KD-SH9103, KD-SH9104

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

Detachable

ANGLE

RM-RK100

AUX SEL

VOLUME

R D

ATT

DAB

DISC

PRESET PRESET

DISC

KD-SH9101

MOSFET

3456 M21

SRC

DISP

ATT

SEL

T/P

MODE

E ------ ContinentalEurope

EX --------- Central Europe

Area Suffix

1-2 (No.49841B)

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 Wperchannel into 4Ω, 40Hzto 20 000 Hzatno more

than 0.8% total harmonic distortion.

Rear 19 Wperchannel into 4Ω, 40Hzto 20 000Hzat 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 kΩTUNER 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 ×H ×D) Installation Size: 182 mm ×52 mm ×161 mm

Panel Size: 188 mm ×58 mm ×17 mm

Mass 1.8 kg (excluding accessories)

(No.49841B)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.

1-4 (No.49841B)

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.

(caption)

Anti-static wrist strap

Conductive material

(conductive sheet) or iron plate

Pickup

Short-circuit point

(Soldering)

Flexible wire

Pickup

Short-circuit point

(No.49841B)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.49841B)

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.

Fig.1

Front panel assembly

Detach button

(No.49841B)1-7

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 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

Heat sink BD

1-8 (No.49841B)

3.1.3 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

3.1.4 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

Mecha control board

CD mechanism assembly

Top chassis

(No.49841B)1-9

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 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

KMotor braket

Motor assembly

Clutch assembly

Washer

1-10 (No.49841B)

3.1.6 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

Main board

CN991 Rod gear

CN703

brackets (L)

Arm

brackets (R)

Rod gear

Main board

Arm brackets (L)

rm brackets (R)

Rear panel Bottom cover

Joint c

Main board

Rear panel Rear heat sink

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