LG MDT505 - SLED and Lens Movement Troubleshooting

3-12
NO
Check the connection line of
M_STBY.
YES
YES
YES
YES
YES
YES
Check the related circuit of
SLD.
NO
Motor
Driver M_STBY
Pin is high?
Check the amp circuit on motor
driver.
NO
NO
Check Focus connection on
MT1389SE/GH and motor driver.
NO
YES
YES
Check the amp circuit on motor
driver.
NO
Proper
Focus outputs
to motor driver?
C
B
Optical Lens
has movements for
searching Focus?
Does
the SLED move to inner
side when it is at outer
position?
NO
Check the cable connection
with MECHA.
Do not put in disc
and close tray.
Motor
Driver SLD
Pin is High?
SLED+ and
SLED- output
properly?
Check cable connection with
pick-up head.
Proper F+ & F-
outputs?