4-7

4.2 Power Troubleshooting
Problem Cause and remedy
No power even
with power switch
turnedON.
•Power cord is not
properly connected to the
outlet.
•Power cord is not
properly connected to the
power inlet.
•Input voltage is not
correct; input voltage is
greater or less than the
rated voltage.
•Correct RS-232C cable is
not used.
→Turno ff the power switch and
properly reconnect the power
cordto the outlet.
→Turno ff the power switch and
properly reconnect the power
cord to the power inlet.
→Set input voltage within t he rated
voltage (puncture voltage m ay
occur. Cont act our service
personnel).
→Turno ff the power switch and
unplug the interface cable.
Check that power turns on by
turning the power switch to ON
and then use the correct
RS-232C cable.