LG LH-T3520X Service Manual page 16

B
YES
Does
the SLED move to inner
side when it is at outer
position?
YES
Do not put in disc
and close tray.
Optical Lens
has movements for
searching Focus?
YES
C
Motor
NO
Driver DRV_MUTE
pin is high?
YES
Motor
Driver DRV_MUTE
pin is High?
YES
SLED+ and
SLED- output
properly?
YES
Check the cable connection
with MECHA.
NO
Proper Focus outputs
to motor dricer?
YES
Proper F+ & F- outputs?
YES
Check cable connection with
pick-up head.
2-7
NO
Check the connection line of
DRV_MUTE.
NO
Check the related circuit of
SLEGN.
NO
Check the amp circuit on
motor driver.
NO
Check Focus connection on
MT1389/L and motor driver.
NO
Check the amp circuit on motor
driver.