Section VI. ORGANIZATIONAL MAINTENANCE OF TEST SET

TM 11-6625-539-14-4

Table 4-2. Organizational Maintenance Troubleshooting

Corrective action

Probable cause

Malfunction

a. Tighten latch or strike screws.

1. Cover fails to open or close properly.

a. Loose latch or strike.

b.. Remove foreign material from gas-

b. Foreign material imbedded in gas-

ket.

c. Replace cover.

c. Cover damaged.

a. Tighten setscrews.

2. Knobs slip on control shafts.

a. Loose setscrews.

b. Replace knobs (para 4-12).

b. Knobs have stripped threads.

c. Replace knobs (para 4-12).

c. Knobs cracked.

3. Banana plugs loose in remote test

a. Replace test leads.

a. Damaged plugs on test leads.

b. Remote test jacks defective.

b. Refer to higher category mainte-

jacks.

nance.

4. Meter fails to indicate in BAT CHK

a. Batteries depleted.

a. Replace batteries (para 2-8).

range when BAT CHK switch is

operated.

b. Battery circuit defective.

b. Refer to higher category mainte-

nance.

Section VI. ORGANIZATIONAL MAINTENANCE OF TEST SET

4-11. General

b. To replace a knob, loosen the setscrew in the

knob and pull the knob from the shaft. Back off

This section describes maintenance procedures

the setscrew in the new knob and slide the knob

that are the responsibility of organizational main-

onto the shaft so that setscrew is aligned with the

tenance.

flat of the shaft. Tighten the setscrew snugly to

secure knob.

4-12. Knob Replacement

c. After tightening or installing knob, operate

If knobs are loose on the control shafts,

the control through its full operating range and

tighten the setscrews to secure the knots to the

check that the knob pointer aligns with the panel

shafts.

markings for all operating positions.

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