Section V GENERAL SUPPORT MAINTENANCE PROCEDURES

TM 11-6625-2975-40

Subject

Para

Page

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-27

2-45

Dust Cover Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-28

2-47

Front Panel Assembly A1 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-48

2-29

POWER Switch S54 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-30

2-49

SELF TEST Switch S53 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-31

2-50

Front Panel Handle Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

2-32

2-51

RF Modulator Assembly A3 and Synthesizer Assembly A4 Replacement . . . . . . . . . . . . . . . . . .

2-52

2-33

Power Supply Assembly A5 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-54

2-34

Controller/Audio Assembly A2 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-35

2-56

Power Supply Fuse A5F1 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

2-36

2-57

Power Supply Fan B1 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-37

2-58

Wire Harness Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-60

2-38

Front Panel Pushbutton Switch Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-39

2-62

Attenuator Assembly A6AT1 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-40

2-65

Rewiring Test Set For 230 VAC Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-41

2-66

RF Output Connector A6J5 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-42

2-68

2-27. GENERAL.

This section provides instructions for general support maintenance of Test Set, Receiver AN/ARM-

180. The following initial setup applies to all maintenance procedures.

Resources required are not listed unless they apply to the particular procedure.

Personnel are listed only if the task requires more than one technician. If Personnel Required is not

listed, one technician can do the task.

The normal equipment condition to start a maintenance procedure is power off and power supply cable

disconnected from the test set.

Tool Kit, Calibration and Repair is used for all maintenance procedures, and is not listed. Any special

tools, or tools not authorized with this tool kit, will be listed for each maintenance procedure as

needed.

Tag, or otherwise identify, all disconnected wires and/or cables. Note color coding, placement, and

methods of insulation (if used) on all wires, cables, and/or components before unsoldering or

removing.

Always pull printed circuit board connectors straight out until connector clears mating pins on printed

circuit boards.

All soldering will be in accordance with TB SIG-222.

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