
B–70115EN/03
6. TROUBLESHOOTING
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(4)Table 6.4.1 explains each type of alarm.
Table 6.4.1 Causes of power supply alarms
Type of alarm Source Major causes
DCI 1
DCI 2
DCI 3
This alarm is issued if the DC
current of the power supply unit
is high when the oscillator is op-
erating in CW/pulse mode.
Load short–circuit
Discharge tube dielectric
breakdown
DCV This alarm is issued if the DC
voltage of the power supply unit
is high when the oscillator is op-
erating in CW/pulse mode.
Vc This alarm is issued if an over-
current or overvoltage occurs in
the control power supply of the
power supply unit.
OH This alarm is issued if water is
not flowing through the cooling
water heat sink of the power
supply unit.
In case of C6000B, it is oc-
curred when the fan of power
supply (or matching box) is bro-
ken.
RFV This alarm is issued if a high
voltage is applied to the dis-
charge tube when the oscillator
is operating in CW/pulse mode.
Infinite load
Discharge tube separation
Failure to install a feeder
RFI This alarm is issued if a high RF
current flows through the dis-
charge tube when the oscillator
is operating in CW/pulse mode.
Vi This alarm is issued if a high in-
verter voltage is detected in the
power supply unit when the os-
cillator is operating in CW/pulse
mode.