User Guide

— 51 —
TROUBLESHOOTING FLOW CHARTS
NO POWER
No
Ye s
No
Ye s
Ye s 
(or the voltage to some
lines is not supplied.)
After a few seconds, the set
will be switched off.
Check 'Power Failure' Circuit.
Is LED flashing?
No
All 0V
(except '5V_ST' and
'3.3V_ST' lines)
Is
the voltage to all lines
supplied?
Is
fuse (F601) 
open?
Check Varistor (VA601).
Main Power Module is broken.
Check arround CPU (IC801).
Main Power Module is broken.
Check '5V_ST' or '3.3V_ST'
line from Main Power Unit
to CPU (IC801).