TO 31R2-2TRC199-1
6-3
b.
Verify that the only LEDs illuminated on the tactical repeater front panel are POWER and XMT.
c.
Verify the green LED on the XMT receiver-transmitter is illuminated and the green LED on the RCV
receiver-transmitter is not illuminated.
6-2.5
Fault LED.
The red FAULT LED (2, Figure 4-1) on the tactical front panel is illuminated when the power amplifier temperature is
excessive. A thermistor in the power amplifier will trigger the fault indication when the internal temperature of the power
amplifier reaches 90
o
C (194
o
F). Power amplifier current draw is decreased slowly until the temperature decreases to
approximately 80
o
C (176
o
F).
6-3
SERVICING.
6-3.1
Servicing Intervals.
Table 6-4 provides recommended service intervals.
Table 6-4. Recommended Service Intervals
Recommended Interval
Task
D
W
M
Q
Visual inspection (see paragraph 6-3.2)
X
Preventive maintenance:
Inspection (see paragraph 6-3.3.1)
X
Cleaning (see paragraph 6-3.3.2)
X
D =
Daily
M =
Monthly
W =
Weekly
Q =
Quarterly
6-3.2
Inspection.
Many potential or existing faults can be detected by making a visual inspection of the equipment. For this reason, a visual
inspection should be made on a routine basis or whenever the tactical repeater is inoperative.
NOTE
If any discrepancies are observed, return the unit to higher level maintenance.
At a minimum, the following items should be inspected by the operator.
a.
Inspect the equipment covers and front panel for condition of finish and panel markings.
b.
Inspect for dents, punctures, and warped areas.
c.
Inspect external surfaces for loose or missing screws or washers.
d.
Inspect the receptacles and connectors for condition of pins, contacts, and mounting.
e.
Inspect the antenna for signs of physical damage.
f.
Inspect the knobs and switches for mechanical integrity.
g.
Inspect LEDs for dust accumulation.
6-3.3
Preventive Maintenance.
The tactical repeater requires very little routine maintenance other than inspection and cleaning. The operator shall
perform the following procedures at the intervals recommended in Table 6-4.
Summary of Contents for AN/TRC-199
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Page 51: ...TO 31R2 2TRC199 1 5 5 Figure 5 2 Repeater Control CCA A3 Functional Block Diagram...
Page 52: ...TO 31R2 2TRC199 1 5 6 Figure 5 3 15 Watt Power Amplifier Assembly A6 Functional Block Diagram...
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Page 71: ...TO 31R2 2TRC 199 1 7 5 HOW TO USE THE ILLUSTRATED PARTS BREAKDOWN...
Page 72: ...TO 31R2 2TRC 199 1 7 6 HOW TO USE THE ILLUSTRATED PARTS BREAKDOWN...
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Page 74: ...TO 31R2 2TRC 199 1 7 8 Figure 7 1 Radio Set AN TRC 199 Sheet 1 of 2...
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Page 79: ...TO 31R2 2TRC 199 1 7 13 Figure 7 2 Tactical Repeater Assembly SS 4100806 501 Sheet 1 of 2...
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Page 85: ...TO 31R2 2TRC 199 1 7 19 Figure 7 3 Power Amp Assembly 15W SS 4100853 501...
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