JVC KDAVX-1 Service manual

SERVICE MANUAL

DVD/CD RECEIVER

MA16520055

KD-AVX1

Area suffix

J ------------- Northern America
E ------------- Southern Europe
A ------------------------ Australia
UT ------------------------- Taiwan
UN --------------------- Indonesia
U -------------------- Other Areas

KD-AVX1

OK

DISP

SOURCE

MENU

D

T/P

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

BACK

BAND

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.MA165

2005/5

SPECIFICATION

for NORTHERN AMERICA version

AUDIO AMPLIFIER SECTION

Power Output 20 W RMS

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

Load Impedance 4

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 k

Line-Out Level/Impedance 5.0 V/20 k

Output Impedance 1 k

Subwoofer-Out Level/Impedance 2.0 V/20 kΩ load (full scale)

Color System NTSC

Video Input (composite) 1 Vp-p/75

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals 2nd AUDIO OUT, DIGITAL OUT (optical), CD changer, Steering wheel re-

TUNER SECTION

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

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

FM Tuner Usable Sensitivity 11.3 dBf (1.0

50 dB Quieting Sensitivity 16.3 dBf (1.8

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

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 16 Hz to 22 000 Hz

DVD fs=96 kHz 16 Hz to 44 000 Hz

VCD, CD, MP3, WMA 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 (Windows Media Audio) Max. Bit Rate 192 kbps

MONITOR SECTION

Screen 3-inch liquid crystal panel

Number of Pixels 123 200 pixels

Drive Method TFT (Thin Film Transistor) active matrix format

Color system NTSC

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 2.0 kg (4.5 lbs) (excluding accessories)

× 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

Ω (4 Ω to 8 Ω allowance)

Ω

mote input (OE REMOTE)

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

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

µV

GENERAL

° C to +40° C (32° F to 104° F)

× 4 Channels at 4 Ω and [< or =] 1% THD+N

Ω)

Ω load
Ω load (full scale)

Ω

µV/75 Ω)
µV/75 Ω)

× 58 mm × 18 mm (7-7/16" × 2-5/16" × 3/4")

1-2 (No.MA165)

for EUROPE version

AUDIO AMPLIFIER SECTION

Maximum Power Output Front 50 W per channel

Rear 50 W per channel

Continuous Power Output (RMS) Front 20 W per channel into 4

harmonic distortion.

Rear 20 W per channel into 4

harmonic distortion.

Load Impedance 4

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

Level ±10 dB

Signal-to-Noise Ratio 70 dB

Line-In Level/Impedance 1.5 V/20 k

Line-Out Level/Impedance 5.0 V/20 k

Output Impedance 1 k

Subwoofer-Out Level/Impedance 2.0 V/20 kΩ load (full scale)

Color System PAL

Video Input (composite) 1 Vp-p/75

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals 2nd AUDIO OUT, DIGITAL OUT (optical), CD changer, Steering wheel re-

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM (MW) 522 kHz to 1 620 kHz

FM Tuner Usable Sensitivity 11.3 dBf (1.0

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 35 dB

Capture Ratio 1.5 dB

MW Tuner Sensitivity 20

Selectivity 35 dB

LW Tuner Sensitivity 50

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=96 kHz 16 Hz to 44 000 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 (Windows Media Audio) Max. Bit Rate 192 kbps

MONITOR SECTION

Screen 3-inch liquid crystal panel

Number of Pixels 123 200 pixels

Drive Method TFT (Thin Film Transistor) active matrix format

Color System PAL

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 2.0 kg (excluding accessories)

× H × D) Installation Size (approx.) 182 mm × 52 mm × 160 mm

Panel Size (approx.) 188 mm

Ω (4 Ω to 8 Ω allowance)

Ω load
Ω load (full scale)

Ω

Ω

mote input (OE REMOTE)

(LW) 144 kHz to 279 kHz

µV/75 Ω)
µV/75 Ω)

µV

µV

°C to +40°C

× 58 mm × 18 mm

Ω, 40 Hz to 20 000 Hz at no more than 0.8% total

Ω, 40 Hz to 20 000 Hz at no more than 0.8% total

(No.MA165)1-3

for ASIA & AUSTRALIA version

AUDIO AMPLIFIER SECTION

Maximum Power Output Front 50 W per channel

Rear 50 W per channel

Continuous Power Output (RMS) Front 20 W per channel into 4

harmonic distortion.

Rear 20 W per channel into 4

harmonic distortion.

Load Impedance 4

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

Level ±10 dB

Signal-to-Noise Ratio 70 dB

Line-In Level/Impedance 1.5 V/20 k

Line-Out Level/Impedance 5.0 V/20 k

Output Impedance 1 k

Subwoofer-Out Level/Impedance 2.0 V/20 kΩ load (full scale)

Color System NTSC/PAL

Video Input (composite) 1 Vp-p/75

Video Output (composite) 1 Vp-p/75 Ω

Other Terminals 2nd AUDIO OUT, DIGITAL OUT (optical), CD changer

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM 531 kHz to 1 602 kHz

FM Tuner Usable Sensitivity 11.3 dBf (1.0

50 dB Quieting Sensitivity 16.3 dBf (1.8

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

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 16 Hz to 22 000 Hz

DVD fs=96 kHz 16 Hz to 44 000 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 (Windows Media Audio) Max. Bit Rate 192 kbps

MONITOR SECTION

Screen 3-inch liquid crystal panel

Number of Pixels 123 200 pixels

Drive Method TFT (Thin Film Transistor) active matrix format

Color system 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

Dimensions (W

Mass (approx.) 2.0 kg (excluding accessories)

× H × D) Installation Size (approx.) 182 mm × 52 mm × 160 mm

Panel Size (approx.) 188 mm

Ω (4 Ω to 8 Ω allowance)

Ω load
Ω load (full scale)

Ω

Ω

µV/75 Ω)
µV/75 Ω)

µV

°C to +40°C

× 58 mm × 18 mm

Ω, 40 Hz to 20 000 Hz at no more than 0.8% total

Ω, 40 Hz to 20 000 Hz at no more than 0.8% total

Design and specifications are subject to change without notice.

1-4 (No.MA165)

1.1 Safety Precautions

SECTION 1

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.MA165)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 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.

(caption)
Anti-static wrist strap

1M

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) Before disconnecting the flexible wire from the connector CN101

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
(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

Flexible wire

CN101

on the mechanism control board.

on the mechanism control board.

on the mechanism control board, solder the short-circuit points

1-6 (No.MA165)

Short-circuit points

Mechanism control board

1.4 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.

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

WARNING LABEL

CAUTION : Visible and Invisible

CLASS 1
LASER PRODUCT

laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)

ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)

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)

(No.MA165)1-7

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.MA165)

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.

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

A and three screws B attaching the side heat sink.

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

Panel assembly

Side heat sink

Button(detach)

Fig.1

B

B

A

Fig.2

(No.MA165)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

C attaching the top chassis assembly. (See Fig.3.)

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

screws C attaching the top chassis assembly. (See Fig.4.)

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

screws C and screw D attaching the top chassis assembly.
(See Figs.5 and 6.)

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

and disconnect the connector CN966
board from the connector CN961
Fig.6.)

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

on the main sub

on the main board. (See

Top chassis assembly

C

Top chassis assembly

C

Fig.3

C

Fig.4

Top chassis assembly

C D

Fig.5

Top chassis assembly

Main board

Fig.6

Main sub board

CN961

C

CN966

1-10 (No.MA165)

3.1.4 Removing the front chassis assembly

(See Fig.7)

• 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 E attaching the front chassis assembly.

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

assembly.

3.1.5 Removing the DVD mechanism assembly

(See Figs.8 and 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 F attaching the DVD mechanism assembly
and take out the DVD mechanism assembly. (See Fig.8.)

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

the double-stick tape fixing the insulator. (See Fig.9.)

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

move the spacer attaching the insulator. (See Fig.9.)

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

Reference:

When the resolution of DVD mechanism assembly is done se­quentially, remove the main sub board. (See next Fig.10.)

Top chassis assembly

E E

Front chassis assembly

DVD mechanism assembly

F

Fig.7

F

Top chassis assembly

Insulator

Double-stick tape

F

Fig.8

Spacer

Double-stick tape

Fig.9

(No.MA165)1-11

3.1.6 Removing the main sub board
(See Fig.10)

• Remove the panel assembly, side heat sink, top chassis as-

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

lease the lock of the connector CN965
board and disconnect the card wire.

(2) Remove the two screws G attaching the main sub board on

the DVD mechanism assembly and remove the main sub
board.

Reference:

When attaching the main sub board, align the projections a in
the holes of the main sub board before attaching the screws G.

3.1.7 Removing the loading unit assembly
(See Fig.11)

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

assembly.
(1) From the inside of the main body, disconnect the wire from

the connector CN881

(2) Remove the two screws H attaching the loading unit as-

sembly.

(3) Remove the tension spring and take out the loading unit

assembly.

Note:

When disassembling, do not lose the tension spring.

on the main board.

on the main sub

a

G

Lock

Main board

Main sub board

CN965

DVD mechanism assembly

Fig.10

Motor bracket assembly

CN881

a

G

H

3.1.8 Removing the arm bracket assemblies (L)/(R)
(See Fig.12)

• Remove the panel assembly, side heat sink, top chassis as-

sembly and loading unit assembly.
(1) Remove the two screws J and screw K attaching the arm

bracket assembly (L).
(2) Take out the arm bracket assembly (L).
(3) Remove the two screws J and screw K attaching the arm

bracket assembly (R).
(4) Take out the arm bracket assembly (R).

3.1.9 Removing the front bracket assembly
(See Fig.12.)

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

assembly.
(1) Release the lock of the connector CN962

board in an upward direction and disconnect the flexible
wire.

(2) Remove the four screws K attaching the front bracket as-

sembly and take out the front bracket assembly.

on the main

Fig.11

Arm bracket assembly (L)

Main board

J

CN962

Tension spring

H

Arm bracket assembly (R)

J

Lock

1-12 (No.MA165)

Front bracket assembly

K

K

Fig.12