TM 11-6625-539-14-4
B-Before Operation
D--During Operation
A--After Operation
Time required: 0.9 M/H
Time required: 0.9 M/H
Time required: 0.1 M/H
Interval and
WORK
Sequence No.
ITEM TO BE INSPECTED
TIME
PROCEDURE
(M/H)
B
D
A
CLEANLINESS
2
0.1
Refer to paragraph 3-5.
3
COVER LATCHES
Check to see that the cover latches are present, free from distortion, and that they
0.1
close firmly.
4
METER
Check to see that the meter face is clear and free from discoloration, all numbers
are legible, and that no moisture has collected under the glass face. Make sure the
0.1
glass face is intact. Report damaged meter to higher category maintenance.
5
TEST LEADS
Inspect the test leads for abrasions, loose connectors, damaged insulation, and
0.3
broken alligator clips. Replace damaged test leads.
6
REMOTE TEST JACKS
Check for cracked insulation and loose mounting. Check to see that the banana
plug on the test lead is tight and secure when inserted. Report defective jacks to
0.1
higher category maintenance.
7
KNOBS
Check to see that all knobs are present and free from cracks and damage. Indicator
mark must be clear and easily visible. Replace damaged knobs. Tighten setscrews
0.1
on loose knobs.
8
CHECK BATTERIES
0.2
Perform battery check. If batteries are weak, replace them (para 2-8).
VARIABLE RESISTOR CONTROLS
9
Check for rough, catching, and binding operation. Report defects to higher cate-
0.1
gory maintenance.
10
TOGGLE SWITCHES
Check for restricted movement and for catching and binding. Make sure switches
return to upper position when released. Report defective switches to higher
0.1
category maintenance.
11
ROTARY SWITCHES
Check for rough, catching, and binding movement and for failure to lock firmly in
each of the designated positions. Report defective switches to higher category
0.1
maintenance.
12
TRANSISTOR SOCKET
Check for cracks, loose mounting, and for pins that fail to hold transistor during
0.1
test. Report defective socket to higher category maintenance.
13
FAULTY METER READINGS
If readings fluctuate or if a disproportionate number of readings are out of range,
0.3
report to higher category maintenance.
14
POLARITY SWITCH POSITION
0.1
Check that the switch is turned to OFF position to prevent battery drain.
Section IV. OPERATOR TROUBLESHOOTING
3-6. General
b. Any malfunction that is beyond the scope of
the operator to correct shall be referred to higher
a. This section provides a chart listing the most
category maintenance.
frequent malfunctions, their probable causes, and
the corrective actions required. Symptoms indi-
cated in this chart include those observed during
3-7. Operator Troubleshooting Chart.
preventive maintenance checks as well as those
encountered during normal operation of the test
The troubleshooting chart for the transistor test
set.
set is provided in table 3-2.
