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TROUBLESHOOTING FLOW CHARTS
NO POWER
No
No
Yes
Yes
Yes
(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 (F601)
open?
Check:
Varistor (VA601),Sub Power
& Filter Unit
Check: around
CPU (IC801), IC (IC802),
Crystal (X801), Power Unit
Check: Power Unit
(PDP Module)
Diode Detected Voltage
D1602/D1604 D3.3V
D1651 12V_AMP
D1640 A9V
D1631 A5V
D1621 TU33V
Power Failure Line
CPU (IC801) 32pin
Q803-Q804
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