LG V9120W Service Manual page 52

B
Does the SLED move
NO
to inner side when it is at
outter position?
YES
Do not put in disc and tray
close.
Optical Lens has
NO
movements for searching
Focus?
YES
C
Motor Driver STBY
Pin is High?
YES
Is FMSO DC Level higher
than 1.4V?
YES
SL+ and SL- output
properly?
YES
Check the cable connection with
MECHA.
Proper FOSO outputs
to motor driver?
YES
Proper F+ & F- outputs?
YES
Check cable connect on with
pick-up head.
3-59
NO
Check the connection line of
STBY signal.
NO
Check the related circuit of
FMSO.
NO
Check the amp circuit on motor
driver.
NO
Check FOSO connection on
MT1389 and motor dirver.
Check the amp circuit on motor
NO
dirver.