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TROUBLE SHOOTING 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 (F1600)
open?
Check:
Varistor (VA1600), Diode Bridge (D1604),
IC (IC1601), Diode (D1612),
Thermistor (R1600)
Check: arround
CPU (IC801), IC (IC886,IC1831,IC1899),
Crystal (X801), Transistor (Q876,Q1608)
Check:
IC (IC1601,IC1600), Diode (D1600,D1601,
D1605,D1606,D1610), Transistor (Q1607)