Troubleshooting Flow Charts - Sanyo Vizon DP32746 Service Manual

NO POWER
to "5V_STBY" line
the voltage to all lines
Check 'Power Failure' Circuit.

TROUBLESHOOTING FLOW CHARTS

Is
Yes
fuse (F601)
open?
No
Is
the voltage
No
supplied?
Yes
No:
Is (except '5V_STBY' line)
supplied?
Yes
(or the voltage to some lines is not supplied.)
After a few seconds, the set will be switched off.
Check:
Varistor (VA611), Diode Bridge (D603),
IC (IC1602, IC603), Thermistor (R609),
Diode (D1618)
Check:
IC (IC1602,IC1604), Diode (D1607, D1608,
D1609, D1610, D1613, D1615, D1616,
D1620, D1629)
All 0V
Check: around
CPU (IC801), IC (IC802, IC1803),
Crystal (X801), Transistor (Q1609, Q1610,
Q1611, Q602, Q670), Diode (D1630,
D1633, D601, D670)
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