CHAPTER 2. OPERATION

TM 11-6625-409-12

CHAPTER 2

OPERATION

Section I. SERVICE UPON RECEIPT OF EQUIPMENT

2-1.

Unpacking

g. Place the running spares in the storage

(fig. 2.1)

compartment inside the case of the M 3736/ARM-45.

If the AN/ARM-45 is not to used immediately, place all

a. Packaging Data. When packaged for shipment,

the test cal assemblies and the technical manuals in t

Tests Sets, Radio AN/ARM-45(*) is - packed in

storage compartment. Close and fasten the case cover.

corrugated cardboard cartons. A typical shipping carton

and its contents are shown in figure 2-1.

b. Removing Contents.

2-3.

Preoperational Tests

(1) Open the outer corrugated carton.

(2) Open the waterproof barrier paper.

a. General. Perform the following preoperational

(3) Open the inner corrugated carton. Remove

tests after the AN/ARM-45 h been unpacked and

the package containing the technical manuals.

inspected (para 2-2). Make t preliminary control settings

(4) Remove the corrugated filler pads on the

given in (2) through (5) below and connect the MX-

top and at the sides of the test set.

3766/ARM-45 an external 27.5-volt dc power source ((6)

(5) Carefully lift the test set from the inner

and below) before performing the preoperational test

carton.

given in b and c below. Operating controls f listed and

described in paragraphs 2-4 and 2-5.

2-2.

Checking Unpacked Equipment.

(1) Unlatch and remove the case cover on t

MX-3736/ARM-45.

a. Inspect the equipment for damage incurred

(2) Operate the METER SELECTOR switch to

OFF (fig. 2-3).

during shipment. If the equipment has been damaged,

(3) Operate the 27.5 VDC-DC ADJU' switch to

report the damage on DD Form 6 (para 1-3).

b. Check the equipment against the items

27.5 VDC. Operate the EXT POWE SHIP POWER

switch to EXT POWER.

comprising an operable equipment and the packing slip

(4) Operate all remaining switches to

to see if the shipment is complete.

Report all

downward position.

discrepancies in accordance with the instructions of TM

(5) Set the remote control unit megacycle and

38.750. The equipment should be placed in service

kilocycle dial knobs to 116.00 megacycle (mc).

even though a minor assembly or part that does not

(6) Connect one end of cable No. 3 to the i DC

affect proper functioning is missing.

c. Check to see whether the equipment has been

POWER receptacle (J-107) (fig. 2-2) inside the MX-

3736/ARM-45 case (fig. 2-4).

modified. (Equipment which has been modified will have

(7) Connect the red clip on the other end cable

the MWO number on the front panel, near the

No. 3 to the positive terminal on the 27 volt dc power

nomenclature plate.) Check also to see whether all

source; connect the black clip to t negative terminal on

currently applicable MWOs have been applied. (Current

the power source. Observe the correct polarity.

MWOs applicable to the equipment are listed in DA Pam

b. Transmitter Channeling Circuit Test ( fig. 2-2).

310-7.)

Perform the procedures below to test t AN/ARM-45 (*)

d. Check all switches and controls for proper

controls and test cat assemblies associated with

mechanical operation.

transmitter chan-neling. If improper test lamp indications

e. Check all test cable receptacles to see that they

E obtained during the test, request higher category of

are free from dirt and corrosion.

maintenance.

2-1

f. Check the remote control unit to see that it is

securely fastened in the front panel of the MX-

3736/ARM-45.