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TM 55-4920-383-13&P
tion. The steps given in table 3-2 must be performed in the sequence indicated, in order to
ensure proper system build-up and provide an immediate means of detecting a fault. Before
starting the performance checks given in table 3-2, the POWER ON/OFF switch (20, figure
2-1) must be set to OFF.
Table 3-2. Performance Checks
Normal
Abnormal
Corrective
Step
Action
indication
indication
action
NOTE
Numbers in parentheses refer to index numbers of figure 2-1.
1
2
Set POWER ON-
OFF switch (20)
to ON.
Depress DISPLAY
TEST switch (4).
POWER ON indi-
cator (19)
lights.
Digital display (7)
reads
8.8.8.8.8.8.
POWER ON indi-
cator (19) does
not light.
Digital display (7)
does not read
8.8.8.8.8.8.
Replace POWER ON
indicator (19), 3/4
AMP SLO BLO fuse
(14), power cable
W1, or adapters
W2 or W3, if defec-
tive. If normal
indication cannot
be obtained, refer
Test Set to higher
level of maintenance.
Refer Test Set to
higher level of
maintenance.
3-8
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