LG XH-T3029S Service Manual page 30

A
Power On.
Show LOGO?
Does
Tray move inside
when it is not at
closed position?
B
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Only for training and service purposes
Flash
Memory operates
properly?
SDRAM
works properly?
ES8380
VIDEO outputs
properly?
Check AV cable
connection to TV set.
Normal
OPEN_SW,
CLOSE_SW
signal?
Normal
IN_SW & OUT_SW
signal?
Normal
LOAD+ & LOAD-
signal?
Check AV cable connection between
main PCBA and loader. (MECHA)
3-3
Check connection lines between FLASH &
ES8380 and the FLASH access time whether
is suitable or not.
Check connection lines between
SDRAM(IC502) & ES8380 and the SDRAM is
damaged.
Check the related circuit of ES8380
IC501 Pins133, 134, 137, 138, 139, 140.
Check the load OPEN & CLOSE switch.
Check the Tray control IO pins on ES8380.
Check the Tray control MOTOR & SERVO
circuit IC401.
LGE Internal Use Only