Troubleshooting - RF Power HVLA1K3 PLUS User Manual

14 TROUBLE SHOOTING
The following table analyzes some common faults and their correction:
Fault Possible Cause
AC mains not a)AC fuses blown
operating b)AC cord not plugged
in
Can't enter a)Control cable not
Transmit connected
mode b)Protection circuits ON
Over a)Internal temperature
temperature high
lights
Faults lights a)High antenna VSWR
b)Wrong Band set
Over drive a)RF overdrive
lights
TVI, EMI a)RF overdrive
b)RF leakage from coax
cable, grounding wire,
AC power cord, etc.
PLUS
HVLA1K3 USERS MANUAL
Solution
a)Replace with new ones.
b)Plug in securely.
a)Check the control cable and connect properly.
b)Check the drive power, antenna VSWR, wrong band
selected, antenna selector A or B, high temperature.
Reset with AC power switch.
a)Ensure adequate airflow around the unit. Keep the
cooling fins unobstructed. Also check the VSWR of the
antenna system since a high VSWR increases the heat
dissipation by the amplifier, causing faster temperature
rise. Reduce drive level or duty cycle.
a)Check integrity of antenna and feedline connections.
Ensure antenna is resonant at the desired frequency.
b)Match the band correctly.
a)Decrease drive.
a)Decrease drive.
b)Insert common mode filters on antenna cable or AC
line. Add clamps on ferrite cores on various cables.
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