LG FB162I Service Manual page 43

C
Laser turns
on when reading
disc?
YES
Put disc in tray.
YES
Does SPINDLE
rotate?
YES
D
LGE Internal Use Only
NO
DVDLD or CDLD
output properly?
YES
Collector
voltage of power
transistor is ok?
(Q405,Q406)
YES
Check cable connection
between P400 and
pick-up head.
NO
Laser off.
NO
Proper SPINDLE
signal on ES8380.
YES
SPIN+&SPIN-
output properly?
YES
Check the cable
connection between
P400 and MD
NO
Check the laser power circuit between
NO
NO
NO
Check the SPINDLE control of motor driver
5-4 Copyright © 2007 LG Electronics. Inc. All right reserved.
ES8380 and power
transistor. (Q405,Q406)
Check the related circuit of laser
power transistor.
Check the SPINDLE related
circuit on ES8380
(IC404).
Only for training and service purposes