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A
RESET or Power On.
NO
Show LOGO?
YES
Does Tray move
NO
inside when it is not
at closed position?
YES
B
Flash Memory operates
properly?
YES
SDRAM works properly?
YES
MT1389 VIDEO outputs
properly?
YES
Have TV signal output?
YES
Check AV cable connection
to TV set.
Normal TROUT &
TRIN signals?
YES
Normal TRCLOSE &
TROPEN signal?
YES
Normal LOAD+ &
LOADsignal?
YES
Check the cable connection
between main PCBA and loader.
Check connection lines between FLASH
NO
& MT1389 and the FLASH access time
whether is suitable or not.
Check connection lines between
NO
SDRAM & MT1389 and the SDRAM
is damaged.
NO
Check the related circuit of MT1389.
NO
Check the filtering and amp circuit of
TV signal.
NO
Check the load OPEN & CLOSE
switch
NO
Check the Tray control IO pins on
MT1389 & IP4504.
NO
Check the Tray control amplifying
circuit on Motor driver.
3-6
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