Harris HTlFM - Page 39

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TROUBLESHOOTING
PROCEDURES
PROBLEM POSSIBLE CAUSES
3. FWD PWR position.
4.
SWR
position.
5.
APC position.
6. BAT TEST position.
Incorrect readings on one or
1.
Faulty control wiring.
more
of
the remote metering cir-
cuits.
888-2312-001
POSSIBLE SOLUTIONS
3. Check integrated circuit U3A with
a high-impedance meter to ground.
Gain from Rl-4/13 (either end)
to
U3A-1 is 11.
4.
Check integrated circuit USA with
a high-impedance meter to ground.
Gain from resistor Rl-3/14 (either
end)
to
USA-
I
is 11.
5.
Check integrated circuit U4B with
a high-impedance meter
to
ground.
With S5 in the APC OFF position,
the gain from U4 pin 5
to
U4 pin
7
is
9.3.
6. Check that a battery is installed.
1.
Check remote control wiring for
defects.
WARNING: Disconnect primary power prior to servicing.
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