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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
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