LG DS563X, Service Manual, Page: 15 / 48

3-5
A
Flash Memory operates
properly?
Show LOGO?
Does Tray move inside when
it is not at closed position?
B
NO
NO
YES YES
YES
YES
YES
YES
YES
YES
YES
Check connection lines between
FLASH & MT1389C and the FLASH
access time whether is suitable or not.
NO
SDRAM works properly?
Check connection lines
between SDRAM & MT1389C
and the SDRAM is damaged.
NO
MT1389C VIDEO outputs
properly?
Check the related circuit of
MT1389C.
NO
Have TV signal output?
Check AV cable connection
to TV set.
Normal TROUT &TRIN
signals?
Check the filtering and amp
circuit of TV signal.
NO
Check the load OPEN &
CLOSE
switch
NO
Normal TRCLOSE &
TROPEN signal?
Check the Tray control IO
pins on
MT1389C & IP9005.
NO
Normal LOAD+ &
LOADsignal?
Check the cable connection
between
main PCBA and loader.
Check the Tray control ampli-
fying
circuit on Motor driver.
NO