Troubleshooting Flow Charts - Sanyo DP42142 Service Manual

NO POWER
Check 'Power Failure' Circuit.

TROUBLESHOOTING FLOW CHARTS

Is
fuse open?
No
Is
the voltage
to "5V_STBY" line
supplied?
Yes
Is
the voltage to all lines
supplied?
Yes
(or the voltage to some lines is not supplied.)
After a few seconds, the set will be switched off.
Power Failure Line
MAIN IC (IC5500) 234pin
Yes
Check: Power Unit
No
Check: Power Unit
No:
All 0V
(except '5V_STBY' line)
Check: arround
MAIN IC (IC5500),
Crystal (X5500), Power Unit
Diod Detected Voltage
D1668
D6700
D1613
– 36 –
AUDIO_POW
5V
5V