Troubleshooting - JVC KD-G110 Service Manual

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5.1 KD-G110 J and KD-S11 J version model
5.1.1 Feed section
Is the voltage output at
IC561 pin 22 5V or 0V
YES
Is 4V present at both
sides of the feed motor?
YES
Check the feed motor.
5.1.2 Focus section
TE
L 13942296513
5.1.3 Spindle section
Is the disk rotated?
YES
Does the RF signal
appear at TP RF?
YES
Is the RF waveform
at TP RF distorted?
YES
Proceed to the Tracking
section
5.1.4 Tracking section
When the disc is rotated
at first:
Is the tracking error
signal output at TP TE?
www
.
Check IC561.
1-26 (No.MA121)
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SECTION 5

TROUBLESHOOTING

NO
Is the wiring for IC561
pin 22 correct?
NO
NO
Is 6V or 2V present at
IC541 pins 4 and 5?
NO
Check IC541.
When the lens is
moving:
4V
Does the S-search
waveform appear at
IC541 pins 8 and 9?
YES
NO
Is 4V present between
IC541 pins 6 and 7?
YES
Check the spindle motor
and its wiring.
NO Check the circuits in
the vicinity of IC501
or the pickup.
NO
Check the circuits in
NO
the vicinity of IC501
pins 25 and 26.
Approx. 1.2V
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y
YES
i
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2 9
8
YES
Is 5V present at IC541
pin 27?
YES
Check the vicinity of
IC561.
YES
Check the feed motor
connection wiring.
Check the circuits in
NO
the vicinity of IC541
pins 15 and 16.
YES
Check the pickup and
Q Q
its connections.
3 6 7 1 3 1 5
NO
Is 4V present at IC561
pins 24 and 25?
YES
Check the vicinity of
IC541
NO
Check the pickup and
its connections.
co
.
9 4 2 8
NO
Check CD 8V.
0 5 8 2 9 9 4 2 8
NO
Check IC561.
m
9 9
9 9