3-6
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Only for training and service purposes
LGE Internal Use Only
NO
NO
NO
YES
1. Check SW signal.
2. Check circuit between
SW & IC.
NO
YES
Check motor driver
related circuit.
1. Check OPU protection.
2. Check laser on power circuit.
Check cable connection
between PCB & Traverse.
Play Disc
Reading disc
YES
YES
Check tact
switch of cover?
Check DC voltage
of SLED+, -?
Check SLED
motor moves to inner
from outer side when
power on?
Laser on?
NO
Check disc type.
YES
YES
Read disc?
B
C