Table of Contents
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When laser light
B
Does lenses move up and down?
YES
Is IC601 pin2 signal waveform
output?
YES
The waveform of IC601 pin2 Is
below figure?
YES
Is Fok signal output?
IC101 Pin2 0.4V over OK.
YES
Is Fok signal input to IC601
Pin13 ?
YES
C
NO
Is signal output at focus
Is signal output at IC601
1, 2?
NO
NO
Amplitude
0.5~1.5V
NO
NO
search terminal?
YES
YES
- 2-6 -
NO
• IC701 defective.
NO
• IC 603 defective.
• Actuator short.
• Connector OPEN.
• Connector short.
• IC601 defective.
• Pick-up defective.
• Turntable height error.
• Laser diode degraded.
• IC 601 defective.
• Pattern defective.
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