Organizational Troubleshooting Chart

TM 11-6625-2616-14

graph 4-12 (referenced in the chart) contains

rective measures indicated do not result in cor-

additional information and step-by-step instruc-

rection of the trouble, or if the corresponding

tions for effecting repair of the equipment dur-

number does not appear in the troubleshooting

ing the troubleshooting procedures.

chart, higher level maintenance is required. Para-

4-11. Organizational Troubleshooting Chart

Checks and corrective meawres

Trouble symptom

Probable trouble

Item No.

a. Improper ac line cord connec-

a. Check ac line cord and connector

Readout tubes and incandescent

tion.

plug,

lamps do not light when PWR

b. Defective ac line fuse. . . . . . . . . .

b. Check ac line fuse (para 4-12a).

ON switch is depressed.

Note. Defective line fuse may in-

dicate some other trouble. If fuse

replacement continues to result in

blown fuse, higher level of main-

tenance is required.

c. Check position of power-selection

Power-selection switch in 230 po-

switch.

sition with 115 volts ac applied.

Defective readout tube . . . . . . . . . . . .

A single readout tube does not

Replace readout tube (para 4-12b).

light.

a. Allow 30 minutes for complete

a. Insufficient warmup time . . . . . . .

Readout will not come to all

warmup.

zeros with input leads shorted

b. Zero adjustment (ZA) required . . . .

b. Zero the readout (para 2-5).

together.

4-4