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(B) when laser light.
Do lenses move up and down?
YES
Insert disc and
in the case of
check of initial
leading.
Is RF(HF) signal waveform
output?
YES
The waveform of RF(HF) is
below figure?
Amplitude
0.5~1.0v
YES
Is FOK signal output? RF(HF)
0.4V over OK.
FOK
YES
Is FOK signal to IC201 Pin41?
FOK
YES
(C)
NO
Is signal output at focus search
terminal? IC101 Pin48 (CDP PCB)
YES
Is signal output at IC301
Pin1, 2 (CDP PCB)?
YES
Actuator short.
Connector short.
NO
IC101(CDP PCB) defective.
Connector short.
IC101(CDP PCB) defective.
NO
TR1, IC101(CDP PCB)
surrounding circuitry defective.
NO
IC101(CDP PCB) defective.
NO
Pattern defective.
- 2-5 -
NO
IC101(CDP PCB) defective.
NO
IC301 defective.
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