14
DVD-S540/DV-S5650
DVD-S540
DV-S5650
Start
Power on
Voltages
at all pins of connector (Ref 1601)
are normal ?
Are
DV33 and V25
normal ?
Display LOGO ?
Is
Main Clock
normal ?
Check oscillation circuit.
Is
reset signal
normal ?
Check reset circuit.
Is signal
on FLASH (item 7611)
normal ?
Is signal
on SDRAM (item 7609)
normal ?
Is input
signal of TV encoder
normal ?
Is output
signal of TV encoder
normal ?
Check the circuit of video
filter, amplifying and cables
with TV
Check peripheral circuit of FLASH (Ref 7611)
Check peripheral circuit of SDRAM (Ref 7609)
Check peripheral circuit of TV
Encoder
Check peripheral circuit of TV
Encoder
A
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
1. Check Cable
2. Replace Power Supply Unit if Mono Board is not shorted,
otherwise find out first where the short is.
Check LD1117 (Ref 7601) and 1N4002 (Ref 6604) and
peripheral circuit.
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