4-5
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Only for training and service purposes
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Defective IC801
Does
SL+ waveform
appear at (IC802 PIN13
and PN802 PIN3)
waveform #2
sled motor
wave
Does slin
waveform appear at
(IC802 PIN5)
waveform #2
sled drive
wave
NO
NO
1-4. READING OK CHECK #A (= “NO DISC” DISPLAY)
YES
YES
A
Defective IC802
NO
Defective PN802 connector
Defective pick up sled motor
Check PN802 connector line
YES
Defective IC801
Does
FA+ waveform
appear at (IC802 PIN16
and PN801 PIN13)
waveform #3 focus
coil drive
wave
Does
fain-waveform
appear at (IC802 PIN25)
waveform #3
focus drive
wave
NO
NO
1-5. READING OK CHECK #B (= “NO DISC” DISPLAY)
YES
YES
B
Defective IC802
NO
Defective PN801 connector
Defective pick up
focus actuator
Check PN801 connector line
YES
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