GENERAL.

TM 11-5820-670-30

Para

Page

Subject

Control Unit C-7088/ARC-131

Front Panel Knobs Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-75

2-224

Front Panel Dial Mask Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-76

2-225

Light Panel Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-77

2-226

Switch and Wiring Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-78

2-228

Squelch Switch S9106 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-79

Volume Control Switch R9103 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-230

Tenths Frequency Selector switch S9103 and/or Hundreths

2-80

2-232

Frequency Selector Switch S9104 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-234

Mode Switch S9105 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-81

Electrical Connector J9101 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tens Frequency Selector Switch S9101 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-244

2-84

Units Frequency Selector Switch S9102 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-38. GENERAL.

This section provides instructions for general support maintenance of Radio Set AN/ARC-131 and its

components. The following initial setup information applies to all procedures.

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

Personnel are listed only if task requires more than one technician.

Normal standard equipment condition to start a maintenance task is power off and disconnected from

power source. Equipment condition is not listed unless some other condition is required.

All soldering will be in accordance with TB SIG 222.

All soldering must be done quickly and where wiring permits, use heat sink pliers to dissipate exces-

sive heat. Use an isolating transfer when only an ac operated soldering iron is available. Do not use a

soldering gun. Do not use a soldering iron rated at over 40 watts because excessive heat may damage

components.

Observe all WARNINGS, CAUTIONS, and NOTES to prevent injury to personnel and damage to

equipment.

Use Tool Kit, Electronic Equipment TK-100/G and Tool Kit, Electronic Equipment TK-105/G for all

procedures unless otherwise specified.

2-151