LG DK763X, Service Manual

Page: 17 / 51

3-6
B
Motor Driver STBY Pin is
High?
Does the SLED move to
inner side when it is at outter
position?
Do not put in disc and tray
close.
Optical Lens has movements
for searching Focus?
C
NO
NO
YES
YES
YES
YES
YES
YES
Check the connection line of
STBY signal.
NO
Is FMSO DC Level higher
than 1.4V? Check the related circuit of
FMSO.
NO
SL+ and SL- output
properly?
YES
Check the amp circuit on
motor driver.
Check FOSO connection on
MT1389E and motor dirver.
NO
NO
Check the cable connection
with MECHA.
Proper FOSO outputs
to motor driver?
Proper F+ & F- outputs?
Check the amp circuit on
motor dirver.
NO
Check cable connect on with
pick-up head.