LG MICRO Hi-Fi SYSTEM - Page 25

3-12
NO
Check the related circuit of SLED
and Motor driver IC (IC401)
NO
YES
Check the cable connection
with MECHA
Do not put in disc
and tray close
Does the
SLED move to inner side
when it is at outer
position?
YES
YES
YES
SLED signal is ok?
Check the MD
NO
YES
Motor driver
DRV_MMUTE pin
high 3
A
NO
Check Focus connection on
ES8391 and motor driver IC
NO
Check cable connection
with pick-up head
Optical
lens is moving
for searching focus?
YESYES
Proper
Focus outputs
to motor driver?
Check the motor driver (IC401)
NO
YES
Proper F+ & F- outputs?
B