JVC KD-AVX2J Bedienungsanleitung

SERVICE MANUAL

2006/4

DVD/CD RECEIVER

MA25420064

KD-AVX2J,KD-AVX2E,KD-AVX2EU,

KD-AVX2EE,KD-AVX2U,KD-AVX2UN,

KD-AVX2A

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33

1-2 (No.MA254)

SPECIFICATION

AUDIO AMPLIFIER SECTION

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

Signal to Noise Ratio Only the United States 80 dBA (reference: 1 W into 4 Ω)

In countries other than the United States 70 dB

Maximum Power Output In other countries Front 50 W per channel

Rear 50 W per channel

Continuous Power Output

(RMS)

In other countries Front 20 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8%

total harmonic distortion.

Rear 20 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8%

total harmonic distortion.

Load Impedance 4 Ω(4 Ωto 8 Ωallowance)

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Level ±10 dB

Line-In Level/Impedance 1.5 V/20 kΩload

Line-Out Level/Impedance Only the United States and Southern Europe 2.5 V/20 kΩload (full scale)

In other countries 2.5 V/20 kΩload (full scale)

Output Impedance Only the United States and Southern Europe 1 kΩ

In other countries 2.5 V/20 kΩload (full scale)

Subwoofer-Out Level/

Impedance

Only the United States and Southern Europe 2.0 V/20 kΩload (full scale)

In other countries 2.5 V/20 kΩload (full scale)

Color System Only the United States NTSC

In Europe PAL

In other countries NTSC/PAL

Video Input (composite) 1 Vp-p/75 Ω

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals Only the United States and Europe 2nd AUDIO OUT, CD changer, Steering wheel remote input (OE RE-

MOTE)

In other countries 2nd AUDIO OUT, CD changer

TUNER SECTION

Frequency Range FM Only the United States 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200

kHz)

Only the United States 87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz)

In other countries 87.5 MHz to 108.0 MHz

AM Only the United States 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)

Only the United States 531 kHz to 1 602 kHz (with channel interval set to 9 kHz)

In Europe (MW) 522 kHz to 1 620 kHz

In Europe (LW) 144 kHz to 279 kHz

In other countries 531 kHz to 1 602 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 ( In other countries ) Sensitivity 20 µV

Selectivity 35 dB

MW Tuner ( In Europe ) Sensitivity 20 µV

Selectivity 35 dB

LW Tuner ( In Europe ) Sensitivity 50 µV

(No.MA254)1-3

Design and specifications are subject to change without notice.

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 16 Hz to 22 000 Hz

DVD fs=192 kHz 16 Hz to 88 000 Hz

VCD, CD 16 Hz to 20 000 Hz

Dynamic Range 93 dB

Signal-to-Noise Ratio 95 dB

Wow and Flutter Less than measurable limit

MP3 Max. Bit Rate 320 kbps

WMA Max. Bit Rate 320 kbps

MONITOR SECTION

Screen 3.5-inch wide liquid crystal panel

Number of Pixels 224 640 pixels

Drive Method TFT (Thin Film Transistor) active matrix format

Color system Only the United States NTSC

In Europe PAL

In other countries NTSC/PAL

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 ×160 mm (7-3/16" ×2-1/16" ×6-5/16")

Panel Size (approx.) 188 mm ×58 mm ×12 mm (7-7/16" ×2-5/16" ×1/2")

Mass (approx.) 1.9 kg (4.2 lbs) (excluding accessories)

1-4 (No.MA254)

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.

(No.MA254)1-5

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 laser products.

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 pickup unit.

• Apply solder to the short land before the flexible wire is disconnected from the connector on the pickup unit.

(If the flexible wire is disconnected without applying solder, the pickup 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

Mechanism control board

CN101

Flexible wire

Short-circuit points

1-6 (No.MA254)

1.5 Important for laser products

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the

Laser Unit. Do not disassemble the Laser Unit. Replace

the complete Laser Unit if it malfunctions.

4.CAUTION : The CD,MD and DVD player uses invisible

laser radiation and is equipped with safety switches which

prevent emission of radiation when the drawer is open and

the safety interlocks have failed or are defeated. It is

dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able

to function.

6.CAUTION : Use of controls, adjustments or performance of

procedures other than those specified here in may result in

hazardous radiation exposure.

REPRODUCTION AND POSITION OF LABELS

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

WARNING LABEL

CAUTION : Visible and Invisible

laser radiation when open and

interlock failed or defeated.

AVOID DIRECT EXPOSURE TO

BEAM. (e)

VARNING : Synlig och

osynling laserstrålning när

den öppnas och spärren är

urkopplad. Betrakta ej

strålen. (s)

VARO : Avattaessa ja suojalukitus

ohitettuna tai viallisena olet alttiina

näkyvälle ja näkymättömälle

lasersäteilylle. Vältä säteen

kohdistumista suoraan itseesi. (f)

ADVARSEL : Synlig og usynlig

laserstråling når maskinen er

åben eller interlocken fejeler.

Undgå direkte eksponering til

stråling. (d)

CLASS 1

LASER PRODUCT

(No.MA254)1-7

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.MA254)

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the panel assembly

(See Fig.1)

(1) Push the button(detach) in the lower right part of the panel

assembly.

(2) Remove the panel assembly.

Fig.1

3.1.2 Removing the side heat sink

(See Fig.2)

Reference:

Remove the panel assembly as required.

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

Aand two screws Battaching the side heat sink.

(2) Remove the side heat sink from the main body.

Fig.2

Panel assembly

Button(detach)

BSide heat sink

(No.MA254)1-9

3.1.3 Removing the top chassis assembly

(See Figs.3 to 6)

• Remove the panel assembly and side heat sink.

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

Cattaching the top chassis assembly. (See Fig.3.)

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

screws Dattaching the top chassis assembly. (See Figs.4

and 5.)

(3) From the back side of the main body, remove the four

screws Eattaching the top chassis assembly. (See Fig.6.)

(4) Lift the top chassis assembly in the direction of the arrow.

(See Fig.6.)

(5) Take out the top chassis assembly from the main body.

Fig.3

Fig.4

Fig.5

Fig.6

Top chassis assembly

Bottom chassis assembly

Top chassis assembly

Bottom chassis assembly

Top chassis assembly

1-10 (No.MA254)

3.1.4 Removing the front chassis assembly

(See Fig.7 and 8)

• Remove the panel assembly, side heat sink and top chassis

assembly.

(1) From the both sides of the top chassis assembly, remove

the two screws Eattaching the front chassis assembly.

(See Fig.7 and 8.)

(2) Remove the front chassis assembly from the top chassis

assembly.

Fig.7

Fig.8

3.1.5 Removing the DVD mechanism assembly

(See Figs.9)

• Remove the panel assembly, side heat sink and top chassis

assembly.

Reference:

Remove the front chassis assembly as required.

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

three screws Gattaching the DVD mechanism assembly

and take out the DVD mechanism assembly.

(2) From the side of the DVD mechanism assembly, remove

the double-stick tape fixing the insulator.

(3) Remove the insulator from the top chassis assembly.

Fig.9

Front chassis assembly

Top chassis assembly

Front chassis assembly

DVD mechanism assembly

Top chassis assembly

Double stick tape

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