8-48
ARMY TM 5-6675-238-14
MARINE CORPS TM 08839A-14/1
Table 8-6. PADS Test Set Self-Test Procedure - Continued
Malfunction indication/
Test procedure
Normal indication
corrective action
h. Press and hold LAMP TEST All lamps illuminate except EN-
switch to check indicators and
TER and LAMP TEST, and the
switch-indicators, then release
FAILURE/ACTION indicator
remains blank for at least 1.5
seconds.
FAILUR/ACTION
indicator sequentially displays
the following within 15 seconds
after pressing LAMP TEST
switch:
Indication
Blank
30
20
Blank
88
Blank
32
Blank
77
No indicator or switch-indicator lights:
a. Press SELF TEST switch-indicator
b. Press and hold LAMP TEST switch
to recheck if indicators light
c. If none of the indicators light, check
LAMP TEST switch (S1) and SELF
TEST switch-indicator (DS12) and re-
place as necessary
d. If S1 and DS12 are good, replace A3
Some indicators or switch-indicators do
not light: Replace applicable indicator
or indicator-switch bulb
FAILURE/ACTION indicator does not
remain blank for 1.5 seconds:
a.
b.
c.
d.
e.
f.
g
h.
i.
Check +15V and –15V fuses, re-
place if necessary
Check PS3 output voltage at W7 ( + )
and W8 (–) for + 15V
If + 15V are not present, check for
115 VAC between terminals 1 and 2
of PS3
If 115 VAC is not present between
terminals 1 and 2 of PS3, check K1
for being energized and check R3 and
repair as necessary
If 115 VAC is present and + 15V is
not present at output of PS3 between
W7 and W8, disconnect Z3 and
recheck + 15V at W7 and W8
If + 15V is still not present, replace
PS3
If + 15V is present between W7 and
W8, adjust Z3 according to proce-
dure 8-23g
If Z3 cannot be adjusted, replace Z3
Check PS4 output voltage at W8 (+)
and W9 (–) for –15V
