Troubleshooting Flow Charts - Sanyo DP42840 Service Manual

TROUBLESHOOTING FLOW CHARTS

NO POWER
the voltage to all lines
Check 'Power Failure' Circuit.
Power Failure Line
CPU (IC800) 48pin
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
CPU (IC800), IC (IC803),
Crystal (X801), Power Unit
Diode Detected Voltage
D1660
D1620/D1621
D1651
D1671
D1681
– 35 –
9V
D3.3V
5V
AUDIO_POW
LVDS_POW