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• READING OK CHECK #A (= "NO DISC" DISPLAY)
A A A A
DOES SL+ WAVEFORM
APPEAR AT ( IC503 PIN14 AND
PN503 PIN3) WAVEFORM #2
SLED MOTOR WAVE
YES
CHECK PN503 CONNECTOR LINE
YES
NO
DOES SLIN WAVEFORM
APPEAR AT ( IC503 PIN 5)
WAVEFORM #2 SLED
DRIVE WAVE
NO
NO
- 2-6 -
NO
DEFECTIVE IC501
NO
DEFECTIVE IC503
DEFECTIVE PN503
CONNECTOR
DEFECTIVE PICKUP
SLED MOTOR
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