Maintenance Flow Chart - Yamaha DVD-E600 Service Manual

DVD-E600
I MAINTENANCE FLOW CHART
at all pins of connector (Ref 1601)
DV33 and V25
Is logo displayed
on TV sceen?
10
Start
Power on
Voltages
No
are normal ?
Yes
Are
No
normal ?
Yes
No
on FLASH (Ref 7611)
Yes
on SDRAM (Ref 7609)
Check TV connetion cable.
A
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.
Is
Check 74HC04 (Ref 7605) and
No
Main Clock
peripheral circuit.
normal ?
Yes
Is
No Check NCP302 (Ref 7650) and
reset signal
peripheral circuit.
normal ?
Yes
Is signal
No
Check peripheral circuit of FLASH (Ref 7611)
normal ?
Yes
Is signal
No
Check peripheral circuit of SDRAM (Ref 7609)
normal ?
Yes
Is image
Check AD8091 (Ref 7660, 7661)
No
signal normal?
and peripheral circuit.
Yes