Read Sony DVP-FX740DT Service Manual online
8-4
DVP-FX740DT
START
Power on
Power
green LED
on
Do all
the buttons work
normally?
Does
remote control work
normally?
Check P_3V3
Does
U7 (MT1389LP)
OK?
Does IR1 work
by testing waveform
normally?
Is the Battery
OK?
Check
J4 on the
MAIN board
Replace
U7 (MT1389LP)
Replace battery
Replace IR1
Check the buttons
Is P_3V3 OK?
Check power
3. Front Circuit
YES
YES
YES
NO
YES
YES
YES
YES
YES
NO
YES
NO
NO
NO
NO
NO
NO
Do the U6
work normally?
Replace U6
YES
NO
Check U6
Replace U6
NO
Check U7
(MT1389LP)
Replace
U7 (MT1389LP)
NO
YES
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