Section IV. MAINTENANCE PROCEDURES - TM-5-6625-2691-13-P0032

TM 5-6625-2691-13&P

Table 3-2. Troubleshooting (Cont'd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. LOAD SWITCHES ARE ON BUT NO LOAD IS APPLIED

Step 1. Check to see if the voltage plug is in the wrong receptacle.

Insert the voltage plug into the correct receptacle (fig. 3-2).

Step 2. Inspect the test set for loose connections.

Tighten any loose connections.

3. POWER ABSORBER OVERHEATS

Step 1. Inspect for proper ventilation.

Remove any foreign objects blocking air flow.

Step 2. Inspect fan for proper operation.

Report any malfunction to higher maintenance personnel.

4. RADIO INTERFERENCE

Step 1. Check the test set ground. Be sure the chassis and cabinet are grounded.

Ground the test set (para 2-3d).

Step 2. Inspect the filter capacitor for Ieakage and loose mounting or connections.

Tighten any loose connections. If this does not correct the situation, refer to higher level maintenance.

5. LOAD DROPPAGE

Step 1. Inspect for a defective fuse by removing the three holder caps (fig. 3-1). Turn the caps counterclockwise and pull the fuses out.

Inspect the fuses for bums, cracks or breaks.

Replace the fuse with a fuse of the same rating and size. Replace fuse holder cap by screwing full clockwise

until snug. Do not overtighten.

Step 2. Be aware of any strange odors.

If acrid odor is present, do not operate the set; refer to higher level maintenance.

S e c t i o n IV. MAINTENANCE PROCEDURES

3-11. Toggle Switches

3-7. General

There are six toggle switches located in the control

The instructions in this section apply only to the

panel (fig. 2-1). Inspect for proper operation and secure

operator, to assist in maintaining the test set.

mounting. Refer test and replacement action to

3-8. Grills

organizational maintenance.

There are three grills: two located on the intake side

3-12. Rectifier

of the unit and one on the exhaust side of the unit. In-

WARNING

spect for cracks or breaks in the screen welding. Notify

Very toxic fumes of selenium dioxide

organizational maintenance of replacement action.

are given off when selenium coated

3-9. Doors

plates burn. Do not breathe the fumes.

a. Inspection. Inspect the doors for cracks, breaks or

Keep fumes and compound away from

other damage. Notify direct support maintenance for

the skin. Handle the burned plates

replacement action.

with gloves and dispose.

WARNING

Inspect rectifier (fig. 1-2) for proper operation and

Dry cleaning solvent P-D-680 or P-

mounting. If burned, notify direct support for replace-

S-661, used to clean parts is potentially

ment action.

dangerous to personnel and property.

3-13. Terminal Studs

Avoid repeated and prolonged skin

a. Inspection. Inspect for cracks, breaks or other

contact. Do not use near open flame or

damage. Refer to organizational maintenance for

excessive heat. Flash point of solvent

replacement action.

is 100 F. (38 C.) -138 F. (60 C.).

WARNING

b. Cleaning. Clean all parts with cleaning solvent P-

Dry cleaning solvent P-D-680 or P-

D-680 and dry thoroughly.

S-661, used to clean parts is potentially

dangerous to personnel and property.

3-10. Wind Switch

There is one wind switch (fig. 1-2) located in each

Avoid repeated and prolonged skin

power absorber. Inspect each switch for proper opera-

contact. Do not use near open flame or

tion and connections. Notify organizational mainte-

excessive heat. Flash point of solvent

nance for test action.

is 100 F. (38 C.) - 138 F. (60 C.).

3-5