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TROUBLESHOOTING FLOW CHARTS
NO POWER
to "5V_STBY" line
the voltage to all lines
Check 'Power Failure' Circuit.
Power F ailure Line
MAIN IC (IC5500) D9pin
Is
Yes
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.
Diod
D1613
D1668
D6700
Check: Power Unit
No
Check: Power Unit
All 0V
No:
(except '5V_STBY' line)
Check: arround
MAIN IC (IC5500),
Crystal (X5500), Power Unit
Detected Voltage
– 31 –
5V
AUDIO_POW
5V
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