TM 11-6130-243-12-1
d. Clean the front panel, meters, and
3-8. Cleaning
switches; use a soft clean cloth. If necessary,
Inspect the exterior of the equipment. The
dampen the cloth with water; mild soap may
exterior surfaces should be free of dirt, grease,
be used for more effective cleaning.
and fungus.
a. Remove dust and other loose dirt with a
3-9. Touchup Painting Instructions
clean soft cloth.
Remove rust and corrosion from metal sur-
Warning: Prolonged breathing of cleaning
faces by lightly sanding them with fine sand-
compound is dangerous; make certain that
paper. Brush two thin coats of paint on the
adequate ventilation is provided. Cleaning
bare metal to protect it from further corrosion.
compound is flammable; do not use near a
Refer to the applicable cleaning and refinishing
flame. Avoid contact with the skin; wash off
practices specified in TB SIG 364.
any that spills on your hands.
b. Remove grease, fungus, and ground-in
3-10.
Troubleshooting
dirt from the case; use a cloth dampened (not
wet) with Cleaning Compound (FSN 7930-
a. General. The troubleshooting chart ( b
395-9542) .
below) will help locate trouble in the power
c. Remove dirt from plugs and jacks with a
supply. Only those corrective measures are
brush.
given which the unit repairman can accomplish.
If the corrective measure does not restore nor-
Caution: Do not press on the meter faces
mal equipment performance, higher category of
(glasses) when cleaning; the meters may be-
maintenance is required.
come damaged.
b. Troubleshooting Chart.
`No.
Probable trouble
Symptom
Check power output. If correct, replace
1
DC OUTPUT indicator
Defective indicator lamp or no
indicator lamp (para 3-11).
power output.
lamp does not illumi-
nate.
Check for loose connection in output
VOLTAGE meter does
2
Connections to meter faulty or
defective.
circuit. Check connections to meter.
not indicate properly.
If meter connations are not faulty,
higher category maintenance is re-
quired.
Connections to meter or to PUSH Check for loose connections at meter
CURRENT meter does
3
and switch. If connections are nut
TO INDICATE switch faulty
not indicate properly.
faulty, higher category maintenance
or defective.
is required.
4
With INPUT POWER
Higher category maintenance is re-
Defective circuit breaker switch.
circuit breaker switch
quired.
set to OFF, CUR-
RENT mater does not
indicate 0 and indicator
lamp does not ex-
tinguish.
INPUT POWER circuit
5
a. Overload ------------------ a . Disconnect from input power, and
breaker trips exces~
check wire and jumper connec-
tions.
sively.
b. Higher category maintenance is re-
quired.
15
