JVC KD-G420 Diagram

MA232200511
SERVICE MANUAL
CD RECEIVER
KD-AR470,KD-G420,KD-G521,
KD-G524,KD-G525,KD-G527
KD-AR470,KD-G420
Area suffix
J ------------- Northern America
KD-AR470
KD-G521
KD-G525
KD-G420
KD-G524
KD-G527
Area suffix
E ------------- Southern Europe EX ------------ Northern Europe EY ------------- Eastern Europe EU ------------------------- Turkey
Area suffix
UI ---------------------------- India
Area suffix
UT ------------------------- Taiwan UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas
Area suffix
EE -------- Russian Federation
TABLE OF CONTENTS
1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
KD-G521
KD-G524
KD-G525
KD-G527
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.MA232
2005/11
SPECIFICATION
AUDIO AMPLIFIER SECTION
Power Output KD-AR470, KD-G420 20 W RMS Maximum Power Output KD-G521, KD-G524,
KD-G525, KD-G527
Continuous Power Output (RMS)
Signal to Noise Ratio KD-AR470, KD-G420 80 dBA (reference: 1 W into 4
Load Impedance 4 Tone Control Range Bass ±10 dB at 100 Hz
Frequency Response 40 Hz to 20 000 Hz Line-Out Level/Impedance KD-AR470 4.0 V/20 k
Output Impedance 1 k Other Terminals CD changer, Steering wheel remote input ( Only KD-G521 ), AUX (auxiliary)
Frequency Range FM ( KD-AR470, KD-G420 ) 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz)
FM Tuner Usable Sensitivity 11.3 dBf (1.0
AM Tuner KD-AR470, KD-G420,
MW Tuner KD-G521, KD-G527 Sensitivity 20
LW Tuner KD-G521, KD-G527 Sensitivity 50
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 96 dB Signal-to-Noise Ratio 98 dB Wow and Flutter Less than measurable limit MP3 Decoding Format MPEG1/2 Audio Layer 3
WMA (Windows Media® Audio) Decoding Format Max. Bit Rate: 192 kbps
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.) 1.5 kg (3.3 lbs) (excluding accessories)
• Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
× H × D) Installation Size (approx.) 182 mm × 52 mm × 150 mm (7-3/16" × 2-1/16" × 5-15/16")
KD-G521, KD-G524, KD-G525, KD-G527
KD-G521, KD-G524, KD-G525, KD-G527 70 dB
Treble ±10 dB at 10 kHz
KD-G420, KD-G521, KD-G524, KD-G525, KD-G527
FM ( KD-G521, KD-G524, KD-G525 ) 87.5 MHz to 108.0 MHz FM1/FM2 ( KD-G527 ) 87.5 MHz to 108.0 MHz FM3 ( KD-G527 ) 65.00 MHz to 74.00 MHz AM ( KD-AR470, KD-G420 ) 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)
AM ( KD-G521, KD-G527 ) (MW) 522 kHz to 1 620 kHz
AM ( KD-G524, KD-G525 ) 531 kHz to 1 602 kHz
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
KD-G524, KD-G525
Panel Size (approx.) 188 mm
Front 50 W per channel Rear 50 W per channel Front 19 W per channel into 4
harmonic distortion.
Rear 19 W per channel into 4
harmonic distortion.
(4 to 8 allowance)
2.5 V/20 k
input jack
TUNER SECTION
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)
(LW) 144 kHz to 279 kHz
Sensitivity 20 Selectivity 35 dB
µV µV
Selectivity 35 dB
CD PLAYER SECTION
Max. Bit Rate: 320 kbps
GENERAL
°C to +40°C (32°F to 104°F)
Design and specifications are subject to change without notice.
× 4 Channels at 4 and [< or =] 1% THD+N
, 40 Hz to 20 000 Hz at no more than 0.8% total , 40 Hz to 20 000 Hz at no more than 0.8% total
Ω)
load (full scale) load (full scale)
µV/75 Ω) µV/75 Ω)
µV
× 58 mm × 11 mm (7-7/16" × 2-5/16" × 7/16")
1-2 (No.MA232)
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.MA232)1-3
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) 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 CD pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land after connecting the flexible wire.
Short-circuit point
(Soldering)
Flexible wire
1-4 (No.MA232)
Short-circuit point
Pickup
Pickup
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.
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.MA232)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 Difference point
[KD-AR470, KD-G420, KD-G524 and KD-G525]
KD-AR470 KD-G420/KD-G524/KD-G525
Remote controller YES NO
Telephone Muting YES NO
Line Out Level / Impedance 4.0V / 20kohm load 2.5V / 20kohm load
[KD-G521, KD-G527]
KD-G521 KD-G527
Steering wheel remote input YES NO
2.2 CD mechanism
For Cd mechanism, please refer mechanism amnual No. MY001.
1-6 (No.MA232)
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the front panel assembly (See Fig.1)
(1) Push the control panel release button in the lower left part
of the front panel assembly and remove the front panel as­sembly.
(2) Take out the front panel assembly.
3.1.2 Removing the bottom cover (See Fig.2)
(1) Turn the main body up side down. (2) Insert a screwdriver under the joints to release the joints a
on the left side, joints b on the right side and joint c on the back side of the main body, then remove the bottom cover from the main body.
Caution:
When releasing the joints using a screwdriver, do not damage the main board.
Front panel assembly
Control panel release button
Fig.1
Bottom cover
b
a
b
a
c
Fig.2
(No.MA232)1-7
3.1.3 Removing the front chassis assembly (See Figs.3 and 4)
• Remove the front panel assembly and bottom cover.
(1) Remove the two screws A on the front side of the main
body. (See Fig.3)
(2) Remove the two screws B on the both sides of the main
body. (See Fig.4)
(3) Release the joints d and joints e on the both sides of the
main body, then remove the front chassis assembly toward the front. (See Fig.4)
Front chassis assembly
A
Fig.3
3.1.4 Removing the side panel (See Fig.5)
Reference:
Remove the front panel assembly as required. (1) Remove the two screws C and screw D attaching the side
panel on the left side of the main body.
(2) Take out the side panel from the main body.
d
d
CCD
B
Front chassis assembly
B
Fig.4
e
e
1-8 (No.MA232)
Side panel
Fig.5
3.1.5 Removing the rear bracket
(See Fig.6) [For KD-AR470, KD-G420, KD-G524 and KD-G525]
• Remove the bottom cover.
(1) Remove the three screws E, three screws F and three
screws G attaching the rear bracket on the back side of the main body.
(2) Take out the rear bracket.
3.1.6 Removing the rear bracket
(See Fig.6) [For KD-G521 and KD-G527]
• Remove the bottom cover.
(1) Remove the three screws E, three screws F and screw G
attaching the rear bracket on the back side of the main body.
(2) Remove the screw H attaching the steering remote cable
on the rear bracket. [KD-G521 only]
(3) Take out the rear bracket.
3.1.7 Removing the main board
(See Figs.6 and 7)
• Remove the front panel assembly, bottom cover, front chassis
assembly and side panel. (1) Remove the three screws E attaching the rear bracket on
the back side of the main body. (See Fig.6.)
(2) Remove the two screws J attaching the main board. (See
Fig.7.)
(3) Disconnect the connector CN101
board. (See Fig.7.)
Reference:
Remove the rear bracket as required.
and take out the main
[For KD-AR470, KD-G420, KD-G524 and KD-G525]
Rear bracket
F
GFG
E E
[For KD-G521 and KD-G527]
Rear bracket
F
FG
E
E
Steering remote cable [KD-G521 only]
Fig.6
[For KD-AR470, KD-G420, KD-G524 and KD-G525]
CN101
J
H
Main board
J
E
Rear bracket
[For KD-G521 and KD-G527]
CN501
Main board
J
Rear bracket
Fig.7
J
(No.MA232)1-9
3.1.8 Removing the CD mechanism control board (See Fig.8) [For KD-AR470, KD-G420, KD-G524 and KD-G525]
• Remove the front panel assembly, bottom cover, front chassis
assembly, side panel and main board. (1) Disconnect the card wire from the connector CN601
CD mechanism control board.
(2) Remove the five screws K attaching the CD mechanism
control board.
(3) Remove the joint f an upward direction and remove the
joint g in the direction of the arrow.
3.1.9 Removing the CD mechanism assembly (See Fig.9)
• Remove the front panel assembly, bottom cover, front chassis
assembly, side panel, main board and CD mechanism control board. (1) Remove the three screws M attaching the top chassis. (2) Take out the CD mechanism assembly.
on the
g
CN601
K
f
K
K
CD mechanism control board
Fig.8
M
1-10 (No.MA232)
CD mechanism assembly
Top chassis
M
Fig.9
3.1.10 Removing the switch board
(See Figs.10 to 12)
• Remove the front panel assembly.
(1) Remove the five screws N attaching the front panel assem-
bly. (See Fig.10)
(2) Release the ten joints h and take out the rear cover. (See
Fig.11)
(3) Lift the switch board from the front panel assembly little by
little and take out the switch board. (See Fig.12)
Reference:
The volume knob is removed from the front side simultaneous­ly.
Note:
When removing the rear cover assembly and switch board, be careful not to lose the compression spring and comp. spring. (See Fig.12)
N
Rear cover
Fig.10
h
h
h
Compression spring
Front panel assembly
Rear cover
Fig.11
Fig.12
h
Switch board
Comp. spring
(No.MA232)1-11
SECTION 4
ADJUSTMENT
4.1 Adjustment method
Test instruments required for adjustment
(1) Digital oscilloscope (100MHz) (2) Electric voltmeter (3) Digital tester (4) Tracking offset meter (5) Test Disc JVC :CTS-1000 (6) Extension cable for check
EXTSH002-22P × 1
Standard volume position
Balance and Bass &Treble volume : lndication"0" Loudness : OFF
How to connect the extension cable for adjusting
[For KD-AR470, KD-G420, KD-G524 and KD-G525]
Caution:
Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively, before supply the power. If voltage is applied without attaching these parts, the power amplifier IC and regulator IC will be destroyed by heat.
Standard measuring conditions
Power supply voltage DC14.4V(11 to 16V)
Load impedance 20K(2 Speakers connection)
Output Level
KD-ARxxx Line out 4.0V (Vol. MAX)
KD-Gxxx Line out 2.5V (Vol. MAX)
Dummy load
Exclusive dummy load should be used for AM,and FM. For FM dummy load,there is a loss of 6dB between SSG output and antenna input.The loss of 6dB need not be considered since direct reading of figures are applied in this working standard.
Extension cable: EXTSH002-22P
Side panel
CN101
Rear bracket
1-12 (No.MA232)
How to connect the extension cable for adjusting
[For KD-G521 and KD-G527]
Caution:
Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively, before supply the power. If voltage is applied without attaching these parts, the power amplifier IC and regulator IC will be destroyed by heat.
EXTSH002-22P
Extension cable
Side panel
CN501
Rear bracket
(No.MA232)1-13
SECTION 5
TROUBLESHOOTING
5.1 Trouble shooting (For KD-AR470, KD-G420, KD-G524 and KD-G525)
5.1.1 Feed section
Is 4V present at both sides of the feed motor?
NO
Is the voltage output at pin 17 and pin 18 of IC681?
NO
Is the voltage input at pin 24 of IC681?
NO
Is the voltage output at pin 40 of IC621?
NO
Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 51 and pin 64 of IC621?
NO
Check the connections of CD8V power supply.
5.1.2 Focus section
YES
Check the feed motor.
Check the connections
YES
between the feed motor and IC681.
Is the power supply
YES YES
present at pin 10, pin 19 and pin 28 of IC681?
NO
Check the connections of CD8V power supply.
Check the connections
YES
between IC621 and IC681.
YES
Check IC621.
Check IC681.
When the lens is moving:
4V
Does the S-search waveform appear at IC681 pins 13 and 14?
NO
Is the voltage input at pin 1 of IC681?
NO
Is the voltage output at pin 33 of IC621?
NO
Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 51 and pin 64 of IC621?
NO
Check the connections of CD8V power supply.
YES
Check the pickup and its connections.
Is the power supply
YES
present at pin 10, pin 19 and pin 28 of IC681?
Check the connections of CD8V power supply.
Check the connections
YES
between IC621 and IC681.
YES
Check IC621.
YES
Check IC681.
NO
1-14 (No.MA232)
5.1.3 Spindle section
Is the disk rotated?
NO
Is the voltage output at pin 15 and pin 15 of IC681?
NO
Is the voltage input at pin 26 of IC681?
NO
Is the voltage output at pin 41 of IC621?
NO
Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 51 and pin 64 of IC621?
NO
YES
Does the RF signal appear at RF output of IC601?
YES
Check the spindle motor and its wiring.
Is the power supply
YES
present at pin 10, pin 19 and pin 28 of IC681?
Check the connections of CD8V power supply.
Check the connections
YES
between IC621 and IC681.
YES
Check IC621.
NO
YES
Is the RF waveform at TP RF distorted?
Check the circuits in the vicinity of IC601 or the pickup.
YES
Check IC681.
NONO
YES
Proceed to the Tracking section
Check the connections of CD8V power supply.
5.1.4 Tracking section
When the disc is rotated at first:
Approx. 1.2V
Is the tracking error signal output at pin 11 of IC601?
NO
Check the circuits in IC601 or the vicinity of IC601.
NO
Replace IC601 or repair the malfunction connection point
YES
Check IC621.
YES
Check the pickup and its connections.
(No.MA232)1-15
5.1.5 Signal processing section
Is the sound output from
YES
both channels (L, R)?
Normal
NO
No sound from either channel.
NO
Compare the L-ch and R-ch to locate the defective point.
YES
Is 9V present at pin 36 of IC161?
Is 9V present at pin 10 of IC901?
Check IC901 and its peripheral circuits.
NO
NO
Is the audio signal (including sampling
YES YES
output components) output to pins 1 and 7 of IC572 during playback?
NO
Check IC572 and its peripheral circuits.
Check the connections
YES
between pin 36 of IC161 and pin 10 of IC901.
Is the audio signal output at pin 19 and pin 20 of IC161 during playback?
NO
Check IC161 and its peripheral circuits.
YES
Check the power amplifier IC301.
1-16 (No.MA232)
5.2 Trouble shooting (For KD-G521 and KD-G527)
5.2.1 Feed section
Is 4V present at both
YES
sides of the feed motor?
NO
Is the voltage output at
YES
pin 4 and pin 5 of IC501?
NO
Is the voltage input at pin
YES YES
27 of IC501?
NO
Is the voltage output at pin
YES
40 of IC541?
NO
Is the power supply present at pin 6, pin 15,
YES
pin 25, pin 39, pin 43, pin 51 and pin 64 of IC541?
NO
Check the feed motor.
Check the connections between the feed motor and IC501.
Is the power supply present at pin 3, pin 12 and pin 21 of IC501?
NO
Check the connections of CD8V power supply.
Check the connections between IC501 and IC541.
Check IC541.
Check IC501.
5.2.2 Focus section
Check the connections of CD8V power supply.
When the lens is moving:
4V
Does the S-search waveform appear at IC501 pins 8 and 9?
NO
Is the voltage input at pin 15 of IC501?
NO
Is the voltage output at pin 33 of IC541?
NO
Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 51 and pin 64 of IC541?
NO
YES
Check the pickup and its connections.
Is the power supply
YES
present at pin 3, pin 12 and pin 21 of IC501?
Check the connections of CD8V power supply.
Check the connections
YES
between IC501 and IC541.
YES
Check IC541.
YES
Check IC501.
NO
Check the connections of CD8V power supply.
(No.MA232)1-17
5.2.3 Spindle section
Is the disk rotated?
NO
Is the voltage output at pin 6 and pin 7 of IC501?
NO
Is the voltage input at pin 17 of IC501?
NO
Is the voltage output at pin 41 of IC541?
NO
Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 51 and pin 64 of IC541?
NO
YES
Does the RF signal appear at TP RF?
YES
Check the spindle motor and its wiring.
Is the power supply
YES
present at pin 3, pin 12 and pin 21 of IC501?
Check the connections of CD8V power supply.
Check the connections
YES
between IC501 and IC541.
YES
Check IC541.
NO
YES
Is the RF waveform at TP RF distorted?
Check the circuits in the vicinity of IC601 or the pickup.
YES
Check IC501.
NONO
YES
Proceed to the Tracking section
Check the connections of CD8V power supply.
5.2.4 Tracking section
When the disc is rotated at first:
Approx. 1.2V
Is the tracking error signal output at pin 11 of IC521?
NO
Check the circuits in IC521 or the vicinity of IC521.
NO
Replace IC521 or repair the malfunction connection point
YES
Check IC521.
YES
Check the pickup and its connections.
1-18 (No.MA232)
5.2.5 Signal processing section
Is the sound output from
YES
both channels (L, R)?
Normal
NO
No sound from either channel.
NO
Compare the L-ch and R-ch to locate the defective point.
YES
Is 9V present at pin 26 of IC161?
Is 9V present at pin 10 of IC901?
Check IC901 and its peripheral circuits.
NO
NO
Is the audio signal (including sampling
YES YES
output components) output to pins 1 and 7 of IC581 during playback?
NO
Check IC581 and its peripheral circuits.
Check the connections
YES
between pin 26 of IC161 and pin 10 of IC901.
Is the audio signal output at pin 19 and pin 20 of IC161 during playback?
NO
Check IC161 and its peripheral circuits.
YES
Check the power amplifier IC301.
(No.MA232)1-19
5.3 Maintenance of laser pickup
(1) Cleaning the pick up lens
Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab.
(2) Life of the laser diode
When the life of the laser diode has expired, the following symptoms will appear.
• The level of RF output (EFM output: amplitude of eye pattern) will be low.
5.4 Replacement of laser pickup
Turn of the power switch and, disconnect the power cord.
Replace the pickup with a normal one. (Refer to "Removing the pickup unit" on the previous page.)
Is RF output
1.3 0.4Vp-p?
NO
Replace it.
YES
OK
(3) Semi-fixed resistor on the APC PC board
The semi-fixed resistor on the APC printed circuit board which is attached to the pickup is used to adjust the laser power.Since this adjustment should be performed to match the characteristics of the whole optical block, do not touch the semi-fixed resistor. If the laser power is lower than the specified value, the la­ser diode is almost worn out, and the laser pickup should be replaced. If the semi-fixed resistor is adjusted while the pickup is functioning normally, the laser pickup may be damaged due to excessive current.
Plug the power cord in, and turn the power on. At this time, check that the laser emits for about seconds and the objective lens moves up and down. Note: Do not observe the laser beam directly.
Play a disc.
Check the eye-pattern at
RF output or TP RF.
Finish.
1-20 (No.MA232)
5.5 16 PIN CORD DIAGRAM [for KD-AR470]
8
7
6
BL/WH
5
4
3
2
1
BK RD
NC
YL
OR/WH
NC
BR
WH
GN
VI
GY
WH/BK
GN/BK
VI/BK
GY/BK
16 YL
8 BK
7 RD
15 OR/WH
13 BR TEL
5 BL/WH
3 GN
16
15
14
13
12
11
10
9
MEMORY
GND
ACC
ILL
REMOTE
RL+
BK
RD
BL
WH
BR
CAUTION!
REMOTE
ONLY
OUTPUT
Black
Red
Blue
White
Brown
GN
VI
GY
YL
OR
Green
Violet
Gray
Yellow
Orange
GND
11 GN/BK
10 VI/BK
12 WH/BK
RR
FR
FL
RL
TEL
2 VI
4 WH
1 GY
9 GY/BK
Rear Right
Front Right
Front Left
Rear Left
Telephone muting
RL-
RR+
RR-
FL+
FL-
FR+
FR-
REMOTE
ACC
MEMORY
GND
ILL
Remote out
ACC Line
Memory Backup Battery +
Ground
Illuminations Control
(No.MA232)1-21
5.6 16 PIN CORD DIAGRAM [for KD-G420]
8
7
6
BL/WH
5
4
3
2
1
BK RD
NC
WH
GN
VI
GY
YL
OR/WH
NC
NC
WH/BK
GN/BK
VI/BK
GY/BK
16 YL
8 BK
7 RD
15 OR/WH
5 BL/WH
3 GN
16
15
14
13
12
11
10
9
MEMORY
GND
ACC
ILL
REMOTE
RL+
BK
RD
BL
WH
REMOTE
CAUTION!
ONLY
OUTPUT
Black
Red
Blue
White
GN
VI
GY
YL
OR
Green
Violet
Gray
Yellow
Orange
GND
11 GN/BK
2 VI
10 VI/BK
4 WH
12 WH/BK
1 GY
9 GY/BK
RR
FR
FL
RL
Rear Right
Front Right
Front Left
Rear Left
RL-
RR+
RR-
FL+
FL-
FR+
FR-
REMOTE
ACC
MEMORY
GND
ILL
Remote out
ACC Line
Memory Backup Battery +
Ground
Illuminations Control
1-22 (No.MA232)
5.7 16 PIN CORD DIAGRAM [for KD-G521 and KD-G527]
10
12
14
OR/WH
16
BR
YL
BK
NC
NC
11
13
BL/WH
15
RD
1
2
3
4
5
6
7
8
9
VI
VI/BK
GY
GY/BK
WH
WH/BK
GN
GN/BK
VI/BK
2
GY/BK
4
WH/BK
6
8
GN/BK
RR+
RR-
FR+
FR-
FL+
FL-
RL+
RL-
VI
GY
WH
GN
1
BK
RD
Black
Red
3
BL
5
7
WH White
BR
Blue
Brown
GN
VI
GY
YL
OR
Green
Violet
Gray
Yellow
Orange
RR
FR
FL
RL
REMOTE
10
BR
YL
12
BL/WH
13
OR/WH ILL
14
RD
15
16
BK
Rear Right
Front Right
Front Left
Rear Left
Remote out
TEL
MEMORY
REMOTE
ACC
GND
ANT
ACC
TEL
GND
MEMORY
MEMORY BACKUP
DIRECT TO BATTERY
+12Volt
ACC + 12Volt
GROUND
Auto Antenna
ACC Line
Telephone Muting
Ground
Memory Backup Battery+
ILL
Illuminations Control
(No.MA232)1-23
5.8 16 PIN CORD DIAGRAM [for KD-G524 and KD-G525]
BK
8
7
RD
YL
16
15
OR/WH
BK
Black
GN
Green
6 5
4 3
2
1
BL/WH
BL
WH
GN
VI
GY
16 YL
8 BK
7 RD
15 OR/WH
3 GN
11 GN/BK
2 VI
14
NC
NC
13
WH/BK
12
GN/BK
11
10
VI/BK
GY/BK
9
MEMORY
GND
ACC
ILL
RL+
RL-
RR+
RD
BL
Red
Blue
WH White
VI Violet
GY
YL
Gray
Yellow
OR Orange
GND
RR
FR
FL
RL
REMOTE
10 VI/BK
4 WH
12 WH/BK
1 GY
9 GY/BK
5 BL/WH
6 BL
Rear Right
Front Right
Front Left
Rear Left
Remote out
RR-
FL+
FL-
FR+
FR-
REMOTE
ANT
ANT
ACC
ILL
GND
MEMORY
REMOTE
OUTPUT
ONLY
POWER
ANTENNA
Auto Antenna
ACC Line
Illuminations Control
Ground
Memory Backup Battery+
1-24 (No.MA232)
(No.MA232)1-25
Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.MA232)
Printed in Japan
VPT
Loading...
+ 59 hidden pages