JVC KD-AVX40 Service Manual

SERVICE MANUAL

DVD/CD RECEIVER

MA446<Rev.001>20093SERVICE MANUAL

KD-AVX20E, KD-AVX20EU, KD-AVX20EE,

KD-AVX20UT, KD-AVX20A, KD-AVX40J,

KD-AVX40E, KD-AVX40EE

Except KD-AVX40J

Only for

KD-AVX40J

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)

Except KD-AVX40J

Only for KD-AVX40

Except KD-AVX20UT, KD-AVX20A, KD-AVX40J

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

No.MA446<Rev.001>

2009/3

SPECIFICATION

KD-AVX40J

AMPLIFIER

Power Output 20 W RMS × 4 Channels at 4 Ω and < or = 1% THD+N Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4 Ω) Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Equalizer Control Range Frequencies 60.0 Hz, 150.0 Hz, 400.0 Hz, 1.0kHz, 2.5kHz, 6.3kHz,

15.0kHz

Level ±10 dB

Audio Output Level (REAR)/SUBWOOFER

Color System NTSC

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals Input LINE IN, VIDEO IN, USB input terminal, Antenna input

Frequency Range FM (with channel interval set to

FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 Ω)

AM Tuner Sensitivity/Selectivity 20 µV/40 dB

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

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

Dynamic Range 93 dB

Signal-to-Noise Ratio 95 dB

Wow and Flutter Less than measurable limit

Screen Size 3.5 inch wide liquid crystal display

Number of Pixel 211 200 pixels: 960 (horizontal) × 220 (vertical)

Drive Method TFT (Thin Film Transistor) active matrix format

Color System PAL/NTSC

Aspect Ratio 16:9 (wide)

Allowable Storage Temperature -10°C to +60°C (14°F to 140°F) Allowable Operating Temperature 0°C to +40°C (32°F to 104°F)

USB Standards USB 2.0 Full Speed

Data Transfer Rate Full Speed: Maximum 12 Mbps

LINE OUT

Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Output Impedance 1 k Ω

Output VIDEO OUT, DIGITAL OUT

Others CD changer, OE REMOTE, MIC IN

FM/AM TUNER

87.5 MHz to 107.9 MHz

100 kHz or 200 kHz)

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

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

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

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 40 dB

DVD/CD

VCD/CD 16 Hz to 20 000 Hz

MONITOR

USB

Low Speed: Maximum 1.5 Mbps

1-2 (No.MA446<Rev.001>)

Compatible Device Mass storage class

Compatible File System FAT 32/16/12

Max. Current DC 5 V 500 mA

BLUETOOTH

Version Bluetooth 1.2 certified

Output Power +4 dBm Max. (Power class 2)

Service Area Within 10 m (10.9 yd)

Profile HFP (Hands-Free Profile) 1.5

OPP (Object Push Profile) 1.1

A2DP (Advanced Audio Distribution Profile) 1.2

AVRCP (Audio/Video Remote Control Profile) 1.3

GENERAL

Power Requirements 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.) 2.2 kg (4.9 lbs) (excluding accessories)

Design and specifications are subject to change without notice.

KD-AVX40/KD-AVX20 for Europe

AMPLIFIER

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS)

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Equalizer Control Range Frequencies

Signal-to-Noise Ratio 70 dB

Audio Output Level LINE OUT (REAR)/SUBWOOFER:

Color System PAL

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals Input LINE IN, VIDEO IN, USB input terminal, Aerial input

Frequency Range FM 87.5 MHz to 108.0 MHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 Ω)

MW Tuner Sensitivity/Selectivity 20 µV/40 dB LW Tuner Sensitivity 50 µV

Front/Rear 20 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more

than 0.8% total harmonic distortion

60.0 Hz, 150.0 Hz, 400.0 Hz, 1.0kHz, 2.5kHz, 6.3kHz, 15.0kHz

Level ±10 dB

Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Output Impedance 1 kΩ

Output VIDEO OUT, DIGITAL OUT

Others CD changer, OE REMOTE, MIC IN

FM/AM TUNER

AM (MW) 522 kHz to 1 620 kHz

(LW) 144 kHz to 279 kHz

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 40 dB

(No.MA446<Rev.001>)1-3

DVD/CD

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

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

MONITOR

Screen Size 3.5 inch wide liquid crystal display

Number of Pixel 211 200 pixels: 960 (horizontal) × 220 (vertical)

Drive Method TFT (Thin Film Transistor) active matrix format

Color System PAL/NTSC

Aspect Ratio 16:9 (wide)

Allowable Storage Temperature -10°C to +60°C Allowable Operating Temperature 0°C to +40°C

USB

USB Standards USB 2.0 Full Speed

Data Transfer Rate Full Speed: Maximum 12 Mbps

Low Speed: Maximum 1.5 Mbps

Compatible Device Mass storage class

Compatible File System FAT 32/16/12

Max. Current DC 5 V 500 mA

BLUETOOTH (KD-AVX40 only)

Version Bluetooth 1.2 certified

Output Power +4 dBm Max. (Power class 2)

Service Area Within 10 m

Profile HFP (Hands-Free Profile) 1.5

OPP (Object Push Profile) 1.1

A2DP (Advanced Audio Distribution Profile) 1.2

AVRCP (Audio/Video Remote Control Profile) 1.3

GENERAL

Power Requirements 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 (approx.) 182 mm × 52 mm × 160 mm

Panel Size (approx.) 188 mm × 58 mm × 12 mm

Mass (approx.) 2.2 kg (excluding accessories)

Design and specifications are subject to change without notice.

KD-AVX20UT/A

AMPLIFIER

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS)

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Equalizer Control Range Frequencies

1-4 (No.MA446<Rev.001>)

Front/Rear 20 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more

than 0.8% total harmonic distortion

60.0 Hz, 150.0 Hz, 400.0 Hz, 1.0kHz, 2.5kHz, 6.3kHz, 15.0kHz

Level ±10 dB

Signal-to-Noise Ratio 70 dB

Audio Output Level LINE OUT (REAR)/SUBWOOFER

Color System NTSC/PAL

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals Input LINE IN, VIDEO IN, USB input terminal, Antenna input

Frequency Range FM 87.5 MHz to 108.0 MHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 Ω)

AM Tuner Sensitivity/Selectivity 20 µV/40 dB

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

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

Dynamic Range 93 dB

Signal-to-Noise Ratio 95 dB

Wow and Flutter Less than measurable limit

Screen Size 3.5 inch wide liquid crystal display

Number of Pixel 211 200 pixels: 960 (horizontal) × 220 (vertical)

Drive Method TFT (Thin Film Transistor) active matrix format

Color System PAL/NTSC

Aspect Ratio 16:9 (wide)

Allowable Storage Temperatur -10°C to +60°C Allowable Operating Temperature 0°C to +40°C

USB Standards USB 2.0 Full Speed

Data Transfer Rat Full Speed: Maximum 12 Mbps

Compatible Device Mass storage class

Compatible File System FAT 32/16/12

Max. Current DC 5 V 500 mA

Power Requirements 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 (approx.) 182 mm × 52 mm × 160 mm

Mass (approx.) 2.2 kg (excluding accessories)

Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Output Impedance 1 kΩ

Output VIDEO OUT, DIGITAL OUT

Others CD changer, OE REMOTE

FM/AM TUNER

AM 531 kHz to 1 602 kHz

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 40 dB

DVD/CD

VCD/CD 16 Hz to 20 000 Hz

MONITOR

USB

Low Speed: Maximum 1.5 Mbps

GENERAL

Panel Size (approx.) 188 mm × 58 mm × 12 mm

Design and specifications are subject to change without notice.

(No.MA446<Rev.001>)1-5

1.1 Safety Precautions

SECTION 1

PRECAUTION

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.

1-6 (No.MA446<Rev.001>)

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.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

(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 card wire is disconnected from the connector on the pickup unit. (If the card 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 card wire.

CN101

CN164

TP79

TP79 TP81

R317

TP67

R312

R21

R357

Voltage supply position

TP92

CENTER

WOOFER

DGND_7

TP81

D-

(No.MA446<Rev.001>)1-7

1.5 Important for laser products

1.CLASS 1 LASER PRODUCT

2.CAUTION :

(For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments.

3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.

4.CAUTION : This laser product uses visible and/or 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.

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

REPRODUCTION AND POSITION OF LABELS and PRINT

WARNING LABEL and PRINT

1-8 (No.MA446<Rev.001>)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3

DISASSEMBLY

3.1 Main body (Used figure are KD-AVX40J)

3.1.1 Removing the Bottom chassis (See Fig.1 to 4)

(1) Remove the two screws A and two screws B attaching the

Heat sink. (See Fig.1)

(2) Remove the one screw C attaching the Bottom chassis.

(See Fig.1)

Fig.1

(3) Remove the one screw D attaching the Bottom chassis.

(See Fig.2)

Fig.2

(4) Remove the three screws E attaching the Bottom chassis.

(See Fig.3)

Fig.3

(5) Remove the two screws F attaching the Bottom chassis.

(See Fig.4)

Fig.4

3.1.2 Removing the Main board (See Fig.5 to 8)

(1) Disconnect the card wire from Front chassis connected to

connector CN962

(2) Disconnect the connector wire from Gear bracket unit con-

nected to connectors CN881 and CN891 of the Main board. (See Fig.5)

(3) Remove the two screws G attaching the Main board. (See

Fig.5)

of the Main board. (see Fig.5)

CN962CN891

(4) Remove the one screw H attaching the Rear bracket. (See Fig.6)

CN881

Fig.5

(No.MA446<Rev.001>)1-9

+ 19 hidden pages