Troubleshooting Flow Charts - Sanyo DP42841 Service Manual

TROUBLESHOOTING FLOW CHARTS

NO POWER
the voltage to all lines
Check 'Power Failure' Circuit.
Power Failure Line
MAIN IC (IC5500) D9pin
Is
fuse open?
No
Is
the voltage
to "5V_STBY" line
supplied?
Yes
Is
supplied?
Yes
(or the voltage to some lines is not supplied.)
After a few seconds, the set will be switched off.
Yes
Check: Power Unit
No
Check: Power Unit
All 0V
No:
(except '5V_STBY' line)
Check: arround
MAIN IC (IC5500),
Crystal (X5500), Power Unit
Diod Detected Voltage
D1641
D1613
D1668
D6700
– 33 –
9V
5V
AUDIO_POW
5V