LG MBD-D102X Service Manual page 28

ELECTRICAL TROUBLESHOOTING GUIDE OF DVD PART
A
Does
the SLED
move to inner side
when it is at outer
position?
YES
Do not put in disc
and tray close.
YES
Optical
Lens is moving
for searching
Focus?
YES
B
Moter driver
NO
DRV_MUTE
PIN is high?
SLED
signal is OK?
Check the cable
connection with MECHA.
Proper
NO
focus outputs to
motor driver?
Proper
F+ & F- outputs?
Check cable connection
with pick-up head.
3-17
NO
YES
NO
YES
NO
YES
NO
YES
Check the MD
Check the related
circuit of SLED and
motor driver IC (IC401)
Check focus connection on
ES8380 and motor
driver IC.
Check the motor
driver (IC401).