Section Il. OPERATOR'S SWITCHES, CONTROLS, INDICATORS, AND JACKS

TM 11-6625-1635-12

in the packing slip. Report all discrepancies in

b. Removing Contents.

accordance with TM 38-750. Shortage of a minor

(1) Cut the tape and open the top of the ship-

assembly or part that does not affect proper func-

ping carton.

tioning of the equipment should not prevent use

(2) Remove the cushioning material from the

of the equipment.

carton.

c. If the equipment has been used or recondi-

(3) Remove the equipment from the carton.

tioned, see whether it has been changed by a modi-

(4) Remove front and rear covers from the

fication work order (MWO). If the equipment has

maintenance kit.

been modified, the MWO number will appear on

(5) Release the three fasteners on the inner

the front panel near the nomenclature plate. If

panel of the rear cover, lift the panel, and remove

m o d i f i e d , see that any operational instruction

the envelopes containing the manual and dia-

changes resulting from the modification have been

grams.

entered in the equipment manual.

(6) Remove the nylon tape that secures the

NOTE

test cables at the rear of the unit.

Current MWO's applicable to the equip-

(7) Place all cushioning material in the ship-

ment are listed in DA Pam 310-7.

ping container and save for storage or reshipment.

d. Check the latest issue of DA Pam 310-4 and its

2-2. Checking Unpacked Equipment

latest changes to see whether the latest editions of

a. Inspect the equipment for damage incurred

all applicable maintenance literature are avail-

during shipment. If the equipment has been dam-

able. (Equipment issued by depots may have been

aged report the damage on DD Form 6.

in stock for some time and may contain super-

seded manuals.)

b. See that the equipment is complete as listed

Section Il. OPERATOR'S SWITCHES, CONTROLS, INDICATORS, AND JACKS

2-3. Maintenance Kit Operating Switches, Controls, Indicators, and Jacks

(Fig, 2-2 or fig. 2-2.1)

Switch, control, indicator,

Function

jack, or fuse

POWER switch (maintainence kit unmodified)

In the ON position, applies the primary operating voltages to the

radio control and lights the test panel 27.5-Vdc and 5-Vac POWER

indicator lamps and the radio control panel lamps.

(maintenance kit modified)

In the ON position, applies the primary operating voltage to the

radio control and the intercom control. Lights the POWER indica-

tor lamp and the panel lamps on the radio control and the intercom

control.

VHF COMM OFF-PWR switch

In the PWR position, applies primary operating voltage to the AN/

ARC-134 and lights the radio control VHF COMM frequency

counter dial indicator lamps.

VMH COMM MHz frequency selector switch

Tunes the AN/ARC-134 to the desired frequency (116 to 149 MHz).

VHF COMM fractional MHz frequency selector switch

Tunes the AN/ARC-134 to the desired fractional megahertz frequen-

cy(116.000 to 149.975 MHz).

VHF COMM VOL control

Adjusts the AN/ARC-134 volume level.

COMM TEST switch

Disables the AN/ARC-134 squelch circuit.

VHF COMM frequency counter dial

Indicates channel frequency to which the AN/ARC-l34 is tuned.

NOTE. VHF NAV portion of Radio Set Control C-7241/ARC

is not wired in, and is not used with the maintenance kit at

this time.

Change

2-3