LG FB162I Service Manual page 41

2. TEST & DEBUG FLOW
POWER ON
YES
Show LOGO?
YES
Does
tray move inside when
it is at closed
position?
YES
B
LGE Internal Use Only
NO
Flash
Memory operates
properly?
YES
SDRAM works
properly?
YES
ES8380 VIDEO
outputs
properly?
YES
Check AV cable
connection to TV set.
NO
OPEN/CLOSE signals
on P401 are OK?
YES
OPEN /CLOSE
signals on IC401 are
OK?
YES
Load+&load-
signals on P401
are OK?
YES
Check the cable
connection between DVD
PCB and MD (MECHA)
5-2
NO
Check connection lines between
FLASH & E8380 or the FLASH access
time whether is suitable or not.
NO
Check connection lines between
SDRAM (IC502) & ES8380 or the
SDRAM is damaged.
NO
Check the related circuit of
ES8380 (IC501)PIN
133,134,137,138,139,140
NO
Check the MD mecha
NO
CHECK THE OUTPUT SIGNAL
OF ES8380 TO IC401 FOR
CONTROL OPEN/CLOSE
NO
Check the Tray control
I/O Pin on IC401.
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Only for training and service purposes