LG DK589XB Service Manual page 15

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