TM 11-5820-890-30-4
Section IV.
Subject
General . . . . . . . . . . . . . . . . . .
Operational Check . . . . . . . . . . . . . . . .
Repair Procedures . . . . . . . . . . . . . .
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RT Covers . . . . . . . . .
MAINTENANCE PROCEDURES
Para
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2-31
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2-32
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2-33
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2-34
Modules 1A2, 1A6, 1A7, 1A12, 1A13, 1A14, 1A15, and 1A16 . . . . . . .
Impedance Matching Network (1A1) . . . . . . . . . . . . . . . . . .
Power Supply (1A3)
. . . . . . . . . . . . . . . . . . . . . . .
ECCM Module (1A5) . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Module (1A4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
lF/Demodulator (1A8) . . . . . . . . . . . . . . . . . . . . . . . . .
Tuner/Mixer (1A9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Synthesizer (1A10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exciter/Power Amplifier (1A11)
. . . . . . . . . . . . . . . . . . . . . .
RF Cables1W1 through 1W5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RT Chassis (1A17)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Entry Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Flex (1A17A1W3) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Flex (1A17A1W2)
. . . . . . . . . . . . . . . . . . . . . .
Display CCA (1A17A1A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Observation Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Threaded Screw Inserts . . . . . . . . . . . . . . . . . . . . . . . . . .
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2-53
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2-31. GENERAL.
This section includes the operational check and the repair procedures. The operational check is used to verify
the operation of a repaired RT. It is also used to verify the symptom of a faulty RT. When a bad module is
identified, replace it using the procedures in this section.
2-32. OPERATIONAL CHECK.
Perform the operational check in paragraph 2-29 to verify correct RT operation.
2-33. REPAIR PROCEDURES.
Repair of the RT consists of replacing a bad module. A module is replaced by removing it and installing a good
module. Procedures for doing this follow.
a.
General Instructions. The following instructions apply to all repair tasks.
1. Set the RT FCTN switch to , and set the test adapter PTT switch to OFF.
2. Remove any cables connected to the RT.
3. Inspect the RT for damage. Repair any obvious physical damage.
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