JVC KD-DV5100 Bedienungsanleitung

SERVICE MANUAL

2005/2

DVD/CD RECEIVER

MA14920052

KD-DV5100

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

Area suffix

J --------------- Northern America

1-2 (No.MA149)

SPECIFICATION

Design and specifications are subject to change without notice.

AUDIO AMPLIFIER SECTION

Power Output 20 W RMS ×4 Channels at 4 Ωand [< or =] 1% THD+N

Signal to Noise Ratio 80 dBA (reference: 1 W into 4 Ω)

Load Impedance 4 Ω(4 Ωto 8 Ωallowance)

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 15 kHz

Level ±10 dB

Audio Output Level Analog (2nd AUDIO OUT) 6 mW (at 16 Ω)

Digital (DIGITAL OUT: Optical) Signal wave length: 660 nm

Output level: -21 dBm to -15 dBm

Line-Out Level/Impedance 2.5 V/20 kΩload (full scale)

Output Impedance 1 kΩ

Color System NTSC

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals LINE IN, CD changer

TUNER SECTION

Frequency Range FM 87.5 MHz to 107.9 MHz (with channel interval set to 200 kHz)

87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz)

AM 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)

531 kHz to 1 602 kHz (with channel interval set to 9 kHz)

FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 35 dB

Capture Ratio 1.5 dB

AM Tuner Sensitivity 20 µV

Selectivity 35 dB

DVD/CD PLAYER SECTION

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz

VCD, CD, MP3, WMA 16 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

MP3 (MPEG Audio Layer 3) Max. Bit Rate: 320 kbps

WMA (Windows Media 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 (32°F to 104°F)

Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×52 mm ×158 mm (7-3/16" ×2-1/16" ×6-1/4")

Panel Size (approx.) 188 mm ×58 mm ×11 mm (7-7/16" ×2-5/16" ×7/16")

Mass (approx.) 1.7 kg (3.7 lbs) (excluding accessories)

(No.MA149)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.MA149)

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) Before disconnecting the flexible wire from the connector CN101 on the mechanism control board, solder the short-circuit points

on the flexible wire.

Caution:

If you do not follow this instruction, the DVD pickup may be damaged.

(2) Disconnect the flexible wire from the connector CN101 on the mechanism control board.

(3) Remove the solders from the short-circuit points on the flexible wire after replacing the DVD pickup.

(4) Connect the flexible wire to the connector CN101 on the mechanism control board.

(caption)

Anti-static wrist strap

Conductive material

(conductive sheet) or iron plate

Mechanism control board

CN101

Flexible wire

Short-circuit points

(No.MA149)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.MA149)

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the front panel assembly

(See Fig.1)

Push the detach button in the lower left part of the front panel as-

sembly and remove the front panel assembly.

Fig.1

3.1.2 Removing the bottom cover

(See Fig.2)

Reference:

Remove the front panel assembly as required.

(1) Release the two joints a, two joints band joint c.

(2) Remove the bottom cover from the main body.

Caution:

Do not damage the main board when releasing the joints using

a screwdriver or a similar tool.

Fig.2

Front panel assembly

Detach button

Bottom cover

(No.MA149)1-7

3.1.3 Removing the front chassis assembly

(See Figs.3 and 4)

• Remove the front panel assembly and bottom cover.

(1) From the front side of the main body, remove the two

screws Aattaching the front chassis assembly. (See

Fig.3.)

(2) From the both sides of the main body, remove the two

screws Battaching the front chassis assembly. (See

Fig.4.)

(3) Release the two joints dand two joints e. (See Fig.4.)

Fig.3

Fig.4

3.1.4 Removing the side heat sink

(See Fig.5)

Reference:

Remove the front panel and front chassis assemblies as re-

quired.

From the left side of the main body, remove the two screws Cand

three screws Dattaching the side heat sink.

Fig.5

Front chassis assembly

Side heat sink

1-8 (No.MA149)

3.1.5 Removing the rear bracket

(See Fig.6)

• Remove the bottom cover.

(1) From the back side of the main body, remove the two

screws E, two screws E', screw F, two screws Gand three

screws Hattaching the rear bracket.

(2) Remove the LINE IN cable from the rear bracket in the di-

rection of the arrow.

Reference:

• When attaching the LINE IN cable, insert it in a slot of the

rear bracket and hang it on a wire holder.

• When attaching the screws E', attach the cable holders with

them.

3.1.6 Removing the main board

(See Figs.6 and 7)

• Remove the front panel assembly, bottom cover, front chassis

assembly and side heat sink.

Reference:

Remove the rear bracket as required.

(1) From the back side of the main body, remove the three

screws Hattaching the main board. (See Fig.6.)

(2) From the bottom side of the main body, remove the three

screws Jattaching the main board. (See Fig.7.)

(3) Disconnect the connector CN961 on the main board from

the DVD mechanism assembly and take out the main

board from the main body. (See Fig.7.)

Fig.6

Fig.7

3.1.7 Removing the DVD mechanism assembly

(See Fig.8)

• Remove the front panel assembly, bottom cover, front chassis

assembly, side heat sink and main board.

(1) From the inside of the top chassis, remove the three

screws Kattaching the DVD mechanism assembly.

(2) Take out the DVD mechanism assembly from the top chas-

sis.

Fig.8

Rear bracket

Cable holder

Wire holder

Slot

LINE IN cable

Rear bracket

CN961

Main board

DVD mechanism assembly

Top chassis

(No.MA149)1-9

3.1.8 Removing the main sub board

(See Figs.9 to 11)

• Remove the front panel assembly, bottom cover, front chassis

assembly, side heat sink, main board and DVD mechanism as-

sembly.

(1) From the top side of the DVD mechanism assembly, re-

move the two screws Lattaching the dust cover. (See

Fig.9.)

(2) Remove the dust cover from the DVD mechanism assem-

bly. (See Fig.9.)

Reference:

When attaching the dust cover, align the joints fin the

holes of the dust cover before attaching the screws L.

(See Fig.9.)

(3) Release the lock of the connector CN962 on the main sub

board and disconnect the card wire. (See Fig.10.)

(4) Bend the joint gin the direction of the arrow. (See Fig.10.)

(5) Remove the two screws Mattaching the main sub board

and remove the main sub board from the DVD mechanism

assembly. (See Fig.10.)

Reference:

• When attaching the main sub board, align the joints hin the

holes of the main sub board before attaching the screws M.

(See Fig.10.)

• When the resolution of DVD mechanism assembly is done

sequentially, remove the two screws Nattaching the support

bracket. (See Fig.11.)

• Remove the card wire from the connector CN401 as re-

quired. (See Fig.11.)

Fig.9

Fig.10

Fig.11

DVD mechanism assembly

Dust cover

Card wire

CN962

Lock

Main sub board

DVD mechanism assembly

Card wire

Support bracket

CN401

1-10 (No.MA149)

3.1.9 Removing the switch board

(See Figs. 12 to 14)

• Remove the front panel assembly.

(1) From the back side of the front panel assembly, remove the

five screws Pattaching the rear cover. (See Fig.12.)

(2) Release the ten joints iattaching the rear cover to the front

panel assembly. (See Fig.13.)

(3) Take out the switch board while lifting the switch board

from the front panel assembly little by little. (See Fig.14.)

Reference:

Remove the volume knob from the front side of the front panel

assembly at the same time.

Note:

Do not lose the compression springs when removing the

switch board. (See Fig.14.) Fig.12

Fig.13

Fig.14

Rear cover

Front panel assembly

Rear cover

Switch board Front panel assembly

Compression spring

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