Sanyo 2009 DP46849 - Troubleshooting Flow Charts

TROUBLESHOOTING FLOW CHARTS
– 30 –
NO POWER
No
Ye s
Ye s
Ye s
No
(or the voltage to some lines is not supplied.)
After a few seconds, the set will be switched off.
Check 'Power Failure' Circuit.
No:
All 0V
(except '5V_STBY' line)
Is
the voltage to all lines
supplied?
Is
the voltage
to "5V_STBY" line
supplied?
Is
fuse open?
Check: arround
CPU (IC800), IC (IC803),
Crystal (X801), Power Unit
Check: Power Unit
Check: Power Unit
Diod Detected Voltage
Diod Detected Voltage
D1670 9V
Power Failure Line
CPU (IC800) 48pin
D1620/D1621 D3.3V
D1641 5V
D1684 AUDIO_POW
LVDS_POW
D1682
CPU (IC800) 23pin