Toshiba SD-K530SU Service Manual page 109

A
RESET or Power On.
Show LOGO?
Does
Tray move inside
when it is not at
closed position?
B
Flash
Memory operates
properly?
SDRAM
works properl y?
MT1379
VIDEO outputs
properly?
Have
TV signal output?
Check AV cable
connection to TV set .
Normal
TROUT & TRIN
signals?
Normal
TRCLOSE &
TROPEN signal?
Normal
LOAD+ & LOAD-
signal ?
Check the cable connection between
main PCBA and loader. (MECHA)
Check connecti on lines between FLASH
& MT1379 and the FLASH access time
whether is suitable or not.
Check connection lines between
SDRAM(IC602,IC603) & MT1379 and the
SDRAM is damaged.
Check the related circui t of MT1379.
(IC601 PIN 161,166, 168 check)
Check the filteri ng and amp circuit of
TV signal.
Check the load OPEN &
CLOSE switch
Check the Tray control IO pins
on MT1376 & MT1379.
Check the Tray control amplifying
circuit on Motor driver.(IC202)
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