LG LX-D2560A Service Manual page 53

I TEST & DEBUG FLOW
POWER ON
YES
Show LOGO?
YES
Does first
tray move inside when
it is at closed
position?
YES
B
NO
Flash
Memory operates
properly?
YES
SDRAM works
properly?
YES
ES8381 VIDEO
outputs
properly?
YES
Check AV cable
connection to TV set.
NO
SW5 &SW7 signals
on P4408 are OK?
YES
OPEN /CLOSE
signals on IC401 are
OK?
YES
Load+&load-
signals on P4408
are OK?
YES
Check the cable
connection between DVD
PCB and MD (MECHA)
- 4-2 -
NO
Check connection lines between
FLASH &ES8381 or the FLASH access
time whether is suitable or not.
NO
Check connection lines between
SDRAM (IC502)&ES8381 or the
SDRAM is damaged.
NO
Check the related circuit of
ES6698FD (IC501)PIN
133,134,137,138,139,140
NO
Check the MD mecha
NO
CHECK THE OUTPUT SIGNAL
OF ES8381 TO IC401 FOR
CONTROL OPEN/CLOSE
NO
Check the Tray control
I/O Pin on IC401.