Troubleshooting Flow Charts - Sanyo DP26640 Troubleshooting Manual

NO POWER
to "5V_STBY" line
the voltage to all lines
Check 'Power Failure' Circuit.
Power Failure Line
CPU (IC800) 48pin

TROUBLESHOOTING FLOW CHARTS

Is
fuse open?
No
Is
the voltage
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
Diod
D1670
D1620/D1621
D1684
– 30 –
Detected Voltage
9V
D3.3V
A12V