LG HT306SF Service Manual page 17

ELECTRICAL TROUBLESHOOTING GUIDE
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 M_STBY
pin is high?
YES
Motor
Driver M_STBY
pin is High?
YES
SLED+ and
SLED- output
properly?
YES
Check the cable connection
with MECHA.
Proper
NO
Focus outputs
to motor driver?
YES
Proper F+ & F-
outputs?
YES
Check cable connection with
pick-up head.
2-8
NO
Check the connection line of
M_STBY.
NO
Check the related circuit of
SLD.
NO
Check the amp circuit on
motor driver.
NO
Check Focus connection on
MT1389MH and motor driver.
NO
Check the amp circuit on motor
driver.