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Page Title:
Section III. REPAIR PROCEDURES |
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 TM 55-4920-325-14&P
Table 4-1. Troubleshooting Chart -continued
Probable cause
Corrective action
Malfunction
a. Check system test
a. Poor shielding or
11. With FUNCTION
setup to assure
grounding of sys-
SELECTOR switch
proper shielding
tem test intercon-
(25, figure 2-1)
and grounds.
nections.
set to CAP IND
b. Check and replace
b. Short or significant
HIGH CAL,
as required.
value change in
(Refer to para-
standard capacitor
INDICATOR (6)
graph 4-12.)
C412.
does not read
within 1% of value
c. Defective FUNCTION
c. Check that pin 4
shown on
SELECTOR switch
of switch S401
STANDARD
S401.
(section C) is
CAPACITOR
not shorted to
MMF nameplate
ground. Repair
(24).
wiring or re-
place switch
S401 as re-
quired. (Refer
to paragraph
S e c t i o n Ill. REPAIR PROCEDURES
4-6. Scope.
This section contains instructions for author-
tent required to replace defective components.
The following procedures are keyed to figures 4-
ized repair of the test set and replacement of de-
fective components. These instructions include
10 through 4-14, which are indexed in disas-
removal and disassembly, cleaning, detail repair
sembly order.
instructions, lubrication, and testing.
4-8. Test Set Disassembly.
4-7. Removal and Disassembly.
To disassemble the test set, refer to figure 4-10
Disassembly of the entire test set is not recom-
and proceed as follows:
mended; disassemble the test set only to the ex-
4-11
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