13
Table 2-4. Troubleshooting Guide
SYMPTOM
PROBABLE CAUSE
SUGGESTED FIX
XMT light ON in
conjunction with
FLT light flashing
when transmitting
Incorrect operating frequency for
selected mode.
Or
RF source is sweeping (not fixed
frequency)
Change mode or frequency for
proper operation.
Do not use a swept source
FLT light flashes
Constantly,
output power is
reduced.
FLT light ON,
Radio connected
to UHF port.
PA has exceeded its normal
operating temperature limit.
PA has exceeded its high
temperature limit and is in
“failsafe” mode – the equivalent
of UHF Bypass.
Provide additional airflow or reduce
transmission time. The PA
automatically reduces output power
under high temperature conditions.
Operation will return to normal and
the FLT light will extinguish once
the PA reaches normal operating
temperature.