4-6
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Only for training and service purposes
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Defective IC804
Is ?V applied
to PIN10 of PN801
laser supply voltage
check
Is 3.3V
applied to
PIN30, 36, 39, 41, 61,
68, 75 of IC801 RF IC
supply voltage
check
NO
NO
1-6. READING OK CHECK #C (= “NO DISC” DISPLAY)
YES
YES
Defective IC801
Is 2.3V
PIN18 (LDO) of IC801
laser control voltage
check
NO
YES
C
Defective Q801 or D801
NO
Defective PN801 connector
Defective pick up laser part
Check PN801 connector line
YES
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