Dell GCR-8481B Service Manual page 7

C. The Laser of Pick-Up doesn't light.
Does "Low" or "High"
output at IC102 pin
YES
Is the voltage of IC102 pin
(LD) 2V?
YES
Check Pick-Up FFC, PN101.
D. The Pick-UP lens doesn't move up and down.
Does the focus search signal
appear at FAO (TP9)?
(Refer to Fig. D-1.)
YES
Is the 1.35V at IC201 pin
YES
Does the focus search
signal appear between F+
(TP10) and F- (TP11)?
(Refer to Fig. D-2.)
YES
D-1
24
NO
Check R118 and replace
?
12
NO
Check Q101, C101, C102
1
and then replace IC102.
Check the pattern from
NO
IC501 pin
and then replace IC501.
NO
Check the R190 and then
?
25
replace IC102.
NO
Replace IC201.
IC501.
to R225
4