JVC KW-XC400 User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.MA235
2005/12
CD/CASSETTE RECEIVER
MA235200512
KW-XC400,KW-XC407
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
KW-XC400
KW-XC407
Area suffix
J ------------- Northern America
KW-XC400
Area suffix
KW-XC407
EE -------- Russian Federation

1-2 (No.MA235)
SPECIFICATION
KW-XC400
Design and specifications are subject to change without notice.
AUDIO AMPLIFIER SECTION
Power Output 18 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 Low ±12 dB (60 Hz, 80 Hz, 100 Hz, 120 Hz)
Mid ±12 dB
High ±12 dB (8 kHz, 10 kHz, 12 kHz, 15 kHz)
Frequency Response 40 Hz to 20 000 Hz
Line-Out Level/Impedance 2.0 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Other Terminals CD changer, AUX (auxiliary) input jack, Steering wheel remote input
TUNER SECTION
Frequency Range FM 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 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
CD PLAYER SECTION
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
Max. Bit Rate: 320 kbps
WMA (Windows Media® Audio) Decoding Format Max. Bit Rate: 192 kbps
CASSETTE DECK SECTION
Wow and Flutter 0.1 % (WRMS)
Fast-Wind Time 100 sec. (C-60)
Frequency Response 30 Hz to 16 000 Hz (Normal tape)
Signal-to-Noise Ratio
(Normal tape)
Dolby B NR ON 65 dB
Dolby B NR OFF 56 dB
Stereo Separation 40 dB
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.) 178 mm ×100 mm ×158 mm (7-1/16" ×3-15/16" ×6-1/4")
Set Size (approx.) 178 mm ×100 mm ×175 mm (7-1/16" ×3-15/16" ×6-15/16")
Mass (approx.) 2.3 kg (5.1 lbs) (excluding accessories)

(No.MA235)1-3
KW-XC407
Design and specifications are subject to change without notice.
AUDIO AMPLIFIER SECTION
Maximum Power Output Front 50 W per channel
Rear 50 W per channel
Continuous Power Output
(RMS)
Front 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total har-
monic distortion.
Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total har-
monic distortion.
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Equalizer Control Range Low ±12 dB (60 Hz, 80 Hz, 100 Hz, 120 Hz)
Mid ±12 dB
High ±12 dB (8 kHz, 10 kHz, 12 kHz, 15 kHz)
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Line-Out Level/Impedance 2.0 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Other terminals CD changer, AUX (auxiliary) input jack
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 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 30 dB
Capture Ratio 1.5 dB
AM Tuner Sensitivity 20 µV
Selectivity 35 dB
CD PLAYER SECTION
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
Max. Bit Rate: 320 kbps
WMA (Windows Media® Audio) Decoding Format Max. Bit Rate: 192 kbps
CASSETTE DECK SECTION
Wow and Flutter 0.1 % (WRMS)
Fast-Wind Time 100 sec. (C-60)
Frequency Response 30 Hz to 16 000 Hz (Normal tape)
Signal-to-Noise Ratio
(Normal tape)
Dolby B NR ON 65 dB
Dolby B NR OFF 56 dB
Stereo Separation 40 dB
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
Dimensions (W ×H ×D) Installation Size (approx.) 178 mm ×100 mm ×158 mm
Set Size (approx.) 178 mm ×100 mm ×175 mm
Mass (approx.) 2.3 kg (excluding accessories)

1-4 (No.MA235)
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.MA235)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.
(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.
1M
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
Pickup
Short-circuit point
(Soldering)
Flexible wire

1-6 (No.MA235)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 CD mechanism and Cassette mechanism
For the CD mechanism, please refer the mechanism manual TN2001-1013 (No.MY001).
For the Cassette mechanism, please refer the mechanism manual CDS-802JE3 (No.MY002).

(No.MA235)1-7
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the front panel assembly
(See Figs.1 and 2)
(1) From the both side of the main body, remove the two
screws Aattaching the front panel assembly. (See Figs.1
and 2.)
(2) Release the four joints aand remove the front panel as-
sembly in the direction of the arrow. (See Figs.1 and 2.)
Fig.1
Fig.2
Front panel assembly
a
A
Front panel assembly
a
A

1-8 (No.MA235)
3.1.2 Removing the heat sink
(See Figs.3 and 4)
(1) From the back side of the main body, remove the six
screws Battaching the heat sink. (See Fig.3.)
(2) Remove the heat sink from the main body.
Note:
• Before attaching the heat sink, attach the cooling rubbers on
the power amplifier IC. (See Fig.4)
• When attaching the heat sink, set the projections bon the
rear bracket in the holes of the heat sink. (See Fig.3.)
3.1.3 Removing the rear bracket
(See Fig.4)
• Remove the heat sink.
(1) From the back side of the main body, remove the seven
screws C, two screws Dand screw Eattaching the rear
bracket.
(2) Remove the rear bracket from the main body.
Fig.3
Fig.4
3.1.4 Removing the bottom chassis assembly
(See Fig.5)
• Remove the front panel assembly, heat sink and rear bracket.
(1) From the bottom side of the main body, remove the four
screws Fattaching the bottom chassis assembly.
(2) Take out the bottom chassis assembly from the main body.
Reference:
When attaching the bottom chassis assembly, set the projec-
tions cof the main body in the holes of the bottom chassis as-
sembly.
Fig.5
B
B
B
bb
Rear bracket Heat sink
CD
C
E
C
C
Rear bracket
Cooling rubbers
Power amplifier IC
Bottom chassis assembly
c
FF

(No.MA235)1-9
3.1.5 Removing the cassette mechanism control board
(See Fig.6)
• Remove the front panel assembly, heat sink, rear bracket and
bottom chassis assembly.
(1) From the inside of the bottom chassis assembly, discon-
nect the card wire from the connector CN403 on the cas-
sette mechanism control board.
(2) Disconnect the wire from the connector CN402 on the cas-
sette mechanism control board.
(3) Remove the three screws Gattaching the cassette mech-
anism control board.
(4) Take out the cassette mechanism control board from the
bottom chassis assembly.
Reference:
• When attaching the cassette mechanism control board, set
the projections dof the bottom chassis assembly in the
holes of the cassette mechanism control board.
• After attaching the cassette mechanism control board, fix
the wire with the wire clamp as before.
Fig.6
3.1.6 Removing the cassette mechanism assembly
(See Fig.7)
• Remove the front panel assembly, heat sink, rear bracket and
bottom chassis assembly.
(1) From the inside of the bottom chassis assembly, discon-
nect the card wire from the connector CN403 on the cas-
sette mechanism control board.
(2) Disconnect the wire from the connector CN402 on the cas-
sette mechanism control board.
(3) Remove the four screws Hattaching the cassette mecha-
nism assembly.
Reference:
After attaching the cassette mechanism control board, fix the
wire with the wire clamp as before.
Fig.7
G
G
d
d
d
CN403CN402
Wire clamp
Cassette mechanism control board
Bottom chassis assembly
CN403
CN402
Wire clamp
Cassette mechanism control board
Bottom chassis assembly
H
H
HCassette mechanism assembly

1-10 (No.MA235)
3.1.7 Removing the func board
(See Fig.8)
• Remove the front panel assembly, heat sink, rear bracket and
bottom chassis assembly.
(1) From the bottom side of the main body, disconnect the wire
from the connector CN321 on the func board.
(2) Remove the screw Jand take out the func board from the
main body.
3.1.8 Removing the middle chassis assembly
(See Fig.8)
• Remove the front panel assembly, heat sink, rear bracket and
bottom chassis assembly.
(1) From the bottom side of the main body, remove the four
screws Kattaching the middle chassis assembly.
(2) Disconnect the connector CN705 of the main board on the
middle chassis assembly from the CD mechanism assem-
bly in an upward direction.
Fig.8
3.1.9 Removing the main board
(See Fig.9)
• Remove the front panel assembly, heat sink, rear bracket, bot-
tom chassis assembly and middle chassis assembly.
(1) From the top side of the middle chassis assembly, discon-
nect the wire from the connector CN323 on the main board.
(2) Remove the four screws Mattaching the main board on the
middle chassis.
(3) Remove the main board from the middle chassis.
Reference:
When attaching the main board, set the projections eof the
middle chassis in the holes of the main board.
Fig.9
Main board
Func board
CN705
CN321
Middle chassis assembly
KK
J
Main board
Middle chassis
ee
M
M
M
CN323

(No.MA235)1-11
3.1.10 Removing the CD mechanism control board
(See Fig.10)
• Remove the front panel assembly, heat sink, rear bracket, bot-
tom chassis assembly and middle chassis assembly.
(1) From the inside of the top chassis assembly, disconnect
the card wire from the connector CN601 on the CD mech-
anism control board.
(2) Remove the five screws Nattaching the CD mechanism
control board.
(3) Lift the CD mechanism control board to remove the joint f
and remove the joint gin the direction of the arrow.
Fig.10
3.1.11 Removing the CD mechanism assembly
(See Fig.11)
• Remove the front panel assembly, heat sink, rear bracket, bot-
tom chassis assembly, middle chassis assembly and CD
mechanism control board.
(1) From the inside of the top chassis assembly, remove the
three screws Pattaching the CD mechanism assembly.
(2) Take out the CD mechanism assembly from the top chas-
sis.
Reference:
When attaching the CD mechanism assembly, set the projec-
tions hof the top chassis assembly in the holes of the CD
mechanism assembly.
Fig.11
CD mechanism control board
CN601
N
N
N
gf
Top chassis assembly
CD mechanism assembly
P
P
h h
Top chassis assembly

1-12 (No.MA235)
3.1.12 Removing the switch board
(See Fig.12)
• Remove the front panel assembly.
(1) From the inside of front panel assembly, remove the eight
screws Qattaching the switch board.
(2) Remove the volume knob from the front side of the front
panel assembly in the direction of the arrow while lifting the
switch board little by little.
(3) Release the sections j while extending the lower section of
the front panel assembly in the direction of the arrow and
take out the switch board.
Fig.12
Q
QQ
Front panel assembly Switch board
j
Volume knob
Front panel assembly

(No.MA235)1-13
SECTION 4
ADJUSTMENT
4.1 Adjustment method
Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Frequency counter meter
(3) Electric voltmeter
(4) Wow & flutter meter
(5) Test tapes
• VT724...........................For DOLBY level measurement
• VT739..............For playback frequency measurement
• VT712....For wow flutter & tape speed measurement
• VT703........................For head azimuth measurement
(6) Torque gauge............................Cassette type for CTG-N
(Mechanism adjustment)
(7) Laser power meter(Reader:LP800102)
(8) Prove for MD (Reader:LP8010-02)
(9) Pre masterd disc (TGYS-1)
(10)Test disc (JVC:CTS1000)
Standard volume position
Balance and Bass, Treble volume, Fader : Center (Indication "0")
Loudness, Dolby NR, Sound, Cruise : Off
Volume position is about 2V at speaker output with following
conditions, Playback the test tape VT721.
Measuring conditions (Amplifier section)
• Power supply voltage.............. DC14.4V (11V to 16V allowance)
• Load impedance............ 4Ω(4Ωto 8Ωallowance)
• Line out level/Impedance..............1.0V/20k load (250 nWb/m)
AM mode 999kHz/62dB, INT/400Hz, 30%
modulation signal on receiving.
FM mono mode 97.9MHz/66dB, INT/400Hz, 22.5kHz
deviation pilot off mono
FM stereo mode 1kHz, 67.5kHz dev. pilot 7.5kHz dev.
Output level 0dB (1µV,50Ω/open terminal)

1-14 (No.MA235)
Information for using a car audio service jig
(1) We're advancing efforts to make our extension cords common for all car audio products.
Please use this type of extension cord as follows.
(2) As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly
after disassembly.
(3) Extension cord : EXTSH002-22P ( 22 pin extension cord ) For connection between the mechanism assembly and main board.
EXTXC004-20P ( 20 pin extension cord ) For connection between the front panel assembly and main board.
EXTXC004-16P ( 16 pin extension cord ) For connection between the front panel assembly and main board.
EXTXC004-16P ( 16 pin extension cord ) For connection between the front panel assembly and cassette mechanism assem-
bly.
(4) Check for mechanism driving section such as motor ,etc.
Disassembly method
(1) Remove the front panel assembly.
(2) Remove the heat sink.
(3) Remove the rear bracket.
(4) Remove the bottom chassis assembly and middle chassis assembly.
(5) Remove the main board.
(6) Remove the CD mechanism assembly.
(7) Reattach the heat sink with two screws to the main board. (Refer to Disassembly method.)
(8) Connect the main board, front panel assembly, bottom chassis assembly and CD mechanism assembly with the extension
cords.
CAUTION :
Be sure to attach a heat sink on the power amplifier IC of a main board when supplying the power.
If voltage is applied without attaching the heat sink, the
power amplifier IC will be destroyed by heat.
*The box etc. is used as a stand.
Front panel assembly
CD mechanism assembly
EXTSH002-22P
EXTXC004-20P
Cassette mechanism assembly
Main board
Heat sink
EXTXC004-16P
EXTXC004-16P
Bottom chassis assembly
Func board

(No.MA235)1-15
4.2 Service mode
Set up
Press POWER ON [SEL] [POWER] [CD EJECT] together more than 2 sec.
UP,DW button to select
SEL button to determination
For next operation, service mode is stop automaticaly.
1. No input signal (key operation) more than 5 sec.
2. press other key without SEL,UP,DOWN.
3. ACC to OFF.
DEL EPROM EEPROM clear
CD ERROR CD error history call change by FF button E1 to TOTAL
DEL CD CD error history clear
MAIN TEMP Templature indication of main board
VERSION Micon version indication

1-16 (No.MA235)
SECTION 5
TROUBLESHOOTING
5.1 Feed section
5.2 Focus section
Check the feed motor.
Is the voltage present at both
sides of the feed motor?
YES
NO
Is the voltage output at pin 17
and pin 18 of IC681?
Is the power supply present
at pin 10, pin 19 and pin 28
of IC681?
Check the connections
between the feed motor and
IC681.
YES
NO
Is the voltage input at pin 24
of IC681?
YES YES Check IC681.
NO
Check the connections of
CD8V power supply.
NO
Is the voltage output at pin 40
of IC621?
Check the connections
between IC681 and IC621.
YES
NO
Is the power supply present
at pin 6, pin 15, pin 25, pin 39,
pin 43, pin 48, pin 51 and pin
64 of IC621?
YES Check IC621.
NO
Check the connections of
CD8V power supply.
When the lens is moving:
Does the S-search waveform
appear at IC681 pin 13 and
pin 14?
4V
Check the pickup and
its connections.
YES
NO
Is the voltage input at pin 1
and pin 2 of IC681?
YES YES
NO
Is the voltage output at pin 33
of IC621?
NO
YES
Check IC681.
Is the power supply present
at pin 10, pin 19 and pin 28
of IC681?
NO
Check the connections of
CD8V power supply.
Is the power supply present
at pin 6, pin 15, pin 25, pin 39,
pin 43, pin 48, pin 51 and pin
64 of IC621?
YES Check IC621.
NO
Check the connections of
CD8V power supply.
Check the connections
between IC681 and IC621.

(No.MA235)1-17
5.3 Spindle section
5.4 Tracking section
Is the disk rotated?
NO
YES
Is the voltage output at pin 15
and pin 16 of IC681?
Does the RF signal appear at
pin 19 of IC601?
YES
Check the spindle motor and
its wiring.
Is the RF waveform at pin
19 of IC601 distorted?
Proceed to the Tracking
section
Check the circuits in
the vicinity of IC601
or the pickup.
YES
NONO
YES
NO
NO
Is the power supply present
at pin 6, pin 15, pin 25, pin 39,
pin 43, pin 48, pin 51 and pin
64 of IC621?
YES Check IC621.
NO
Check the connections of
CD8V power supply.
Is the voltage output at pin 41
of IC621?
Check the connections
between IC681 and IC621.
YES
Is the power supply present
at pin 10, pin 19 and pin 28
of IC681?
Is the voltage input at pin 26
of IC681?
YES YES Check IC681.
NO
Check the connections of
CD8V power supply.
NO
When the disc is rotated
at first:
Approx. 1.2V
Is the tracking error signal
output at pin 11 of IC601?
Check the circuits in IC601 or
the vicinity of IC601.
Replace IC601 or repair the
malfunction connection point
YES
NO
Check the pickup and
its connections.
YES
NO
Check IC601.

1-18 (No.MA235)
5.5 Signal processing section
No sound from either
channel.
Is 9V present at pin 40
of IC151?
Compare the L-ch and
R-ch to locate the
defective point.
Is the sound output from
both channels (L, R)?
YES
NO Is the audio signal
(including sampling
output components)
output to pins 1 and 7 of
IC572 during playback?
Is the audio signal output
at pin 36 and pin 37 of
IC151 during playback?
Normal
YES
NO
YES YES
NO
Check IC572 and its
peripheral circuits.
NO
Check IC151 and its
peripheral circuits.
YES
Check the power
amplifier IC181.
NO
Is 9V present at pin 10
of IC901?
YES
Check the connections
between pin 40 of IC151
and pin 10 of IC901.
NO
Check IC901 and its
peripheral circuits.

(No.MA235)1-19
5.6 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.
(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 la-
ser 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.
5.7 Replacement of laser pickup
Is RF output
1.3 0.4Vp-p?
YES
NO
OK
Replace it.
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.)
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
pin 19 of IC601.
Finish.

1-20 (No.MA235)
5.8 16 PIN CORD DIAGRAM
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
9
BK
RD
BL
BL/WH
WH
GN
VI
GY
YL
OR/WH
NC
NC
WH/BK
GN/BK
VI/BK
GY/BK
GND
16 YL
8 BK
7 RD
15 OR/WH
3 GN
11 GN/BK
2 VI
10 VI/BK
4 WH
12 WH/BK
1 GY
9 GY/BK
5 BL/WH
6 BL
Black
RD
BK
Red
BL Blue
WH White
GN Green
VI Violet
GY Gray
OR Orange
YL
Yellow
RR
FR
FL
RL
REMOTE
ANT
ACC
ILL
GND
MEMORY
Rear Right
Front Right
Front Left
Rear Left
Remote out
ACC Line
Illuminations Control
Ground
Memory Backup Battery+
Auto Antenna
MEMORY
GND
ACC
ILL
RL+
RL-
RR+
RR-
FL+
FL-
FR+
FR-
REMOTE
ANT
REMOTE OUTPUT ONLY
POWER ANTENNA