A CUTBACK alarm indicates that several shutback alarms have occurred.
A CUTBACK alarm may be triggered by a fault in the
transmitter, large VSWR, or a fault in the alarm
circuitry of the system controller PWB. Trouble
shoot a CUTBACK alarm as follows:
(a)Read the output power level on the RF
KILOWATTSmeter on the transmitter’s control
panel. If the output power is not less than the
preset operating level, the CUTBACK alarm may
be false. Suspect the alarm circuitry on the
system controller PWB (see figures SD-8 thru
(b)Press and release the ∧ POWER switch on front
panel to restore the preset power level. If the
fault persists, the output power will
automatically cutback again. Observe the front
panel and note which alarm is forcing shutback.
Refer to the appropriate trouble shooting
paragraph in this section.
(c)If the output power does not cutback, the fault
no longer exists. Press ALARM RECALL. The
fault that caused cutback will turn red. Refer to
the appropriate paragraph in this section for
trouble shooting information, if necessary.