Harris HTlFM - Page 36

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PROBLEM
Contactor does not pull up.
Auto Power Set drifts.
VSWR
Foldback
does
not
oper-
ate.
Transmitter
off
frequency.
High FM Noise.
High AM Noise
High Audio Distortion
No modulation
Remote control functions and
metering failure.
5-6
TROUBLESHOOTING PROCEDURES
POSSIBLE CAUSES
POSSIBLE SOLUTIONS
2. Antenna damaged due
to
objects
2.
Repair the antenna.
striking the Antenna or from weather
damage.
1.
Fuse F2 open
1.
Replace F2
2. Coil
of
contactor 16 open. 2. Replace contactor
Kl.
1.
Defective forward power coupler.
1.
replace the FORWARD Direc-
tional Coupler
2. Auto Power circuit on Controller
board.
1.
Defective reverse power Direc-
tional Coupler
DCI.
1.
Exciter AFC drifting.
1.
RF
from the antenna appearing
in
the program lines
to
the Exciter.
2. Poor transmitter and audio input
equipment grounding.
3. Noise generated inside exciter.
1.
Defective filtering in
PA
supply.
1.
Defective Exciter.
2. Defective program lines and/or
audio input equipment.
1.
No audio input to the Exciter.
2. Defective Exciter.
2. Refer to Controller Troubleshoot-
ing table for corrective action.
1.
If
no voltage is present when a
known VSWR is present, replace the
reverse power coupler element.
1.
Refer to the Exciter Technical
Manual.
1.
Filter Carrier
RF
from program
lines, limiter, and all other audio
equipment.
2. Ground the equipment properly.
3.
Troubleshoot exciter.
1.
Check filter chokes and capaci-
tors. Replace defective components.
1.
Refer to the Exciter Technical
Manual for corrective action. Check
the Exciter operation separate from
the transmitter.
2. Check all audio input equipment
and lines separately.
1.
Check limiters, lines, STL, and
station wiring
to
the Exciter. Repair
as
necessary.
2. Refer
to
the Exciter Technical
Manual and restore Exciter operation
as
necessary.
1.
Remote control equipment faulty.
1.
Refer to the Remote Control
Equipment Technical Manuals.
Check the operation of the equip-
ment and repair as necessary.
2. Controller inputs and outputs.
888-2312-001
2.
Refer to Controller Troubleshoot-
ing Table and repair the Controller
as
necessary.
WARNING:
Disconnect primary power prior to servicing.