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1
Is output
voltage of IC1 pin 37
(TP35) approx.
1.3 V *1
YES
Is voltage
on both sides of R5
at least 0.025 V?
YES
Faulty optical pickup
*1:
For measurements of IC1,
refer to the item 8.5.2. of
"Operation Checks and
Component Replacement
Procedures".
2
Is current
flowing equal to at
least 1.2 times value
indicated on pick
FPC? *2
NO
Faulty optical pickup
*2: Indicated value:
Current equal to that on both
sides of R5 divided by 1 ™
NO
of IC1 pin 36
NO
Is there
output from IC3
pin 92?
YES
Is voltage of
IC1 pin 2 (left side of R8)
approx. 1.9 V?
*1
YES
Is voltage
on both sides of R5
at least 0 V?
YES
Faulty Q1
YES
Is output of
IC3 pin 92 OK?
YES
Is voltage of
IC1 pin 2 (left side of R8)
approx. 1.9 V?
*1
YES
Faulty optical pickup
Is voltage
NO
2.6 V? *1
YES
Faulty IC9
Faulty IC1
3.3V
0V
NO
Faulty IC3
NO
Faulty IC1
NO
Faulty optical pickup
3.3V
0V
NO
Faulty IC3
NO
Faulty IC1
Is voltage
NO
of IC9 pin 3
2.6 V?
YES
Faulty L5
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