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READING OK CHECK #D (= "NO DISC" DISPLAY)
D
DOES SP+ WAVEFORM APPEAR
AT
( IC503 PIN12 AND PN503 PIN6)
WAVEFORM #4
SPINDLE MOTOR DRIVE WAVE
DOES SPIN WAVEFORM
APPEAR AT
DEFECTIVE IC501
( IC503 PIN 6)
WAVEFORM #4
SPINDLE DRIVE WAVE
DEFECTIVE IC503
DEFECTIVE PN503
CHECK PN802 CONNECTOR LINE
CONNECTOR
DEFECTIVE PICKUP
SPINDLE MOTOR
- 2-16 -
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