ARMY TM 5-6675-238-14
MARINE CORPS TM 08839A-14/1
Table 8-6.1. PADS Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
Malfunction
Test procedure
Normal indication
indication/corrective action
ah.
ai.
Press MEMORY LOAD, VER-
IFY, and REVERSE, and EXE-
CUTE switch-indicators in order
g i v e n
Press SELF TEST switch-indica-
tor to off
EXECUTE switch-indicator may be-
gin flashing when any of the other
three switch-indicators is pressed:
MEMORY LOAD, VERIFY, and
REVERSE switch-indicators go
off when pressed. EXECUTE
switch-indicator remains off if al-
ready off, or goes off if flashing
when pressed
SELF TEST switch-indicator goes
Off. IMU FAIL/COMP FAIL and
OFF indicators remain on. EXE-
CUTE switch-indicator lights.
FAILURE/ACTION
indicator
displays 77
FAILURE/ACTION indicator does
not display 00 when tape stops:
Check number displayed for its
definition in table 8-7 and perform
action specified
A switch-indicator does not go off
w h e n p r e s s e d:
Check specific switch-indicator for
proper operation and shorted con-
tacts
SELF TEST switch-indicator does
not go off:
a. Replace A3
b. Replace buffer unit
c. Replace A1
EXECUTE switch-indicator does not
light:
a. Replace A3
b. Replace A1
aj. Set tape reader FAST/SLOW
switch to FAST
ak. Press REVERSE switch-indica-
tor to on
al. Press REVERSE switch-indicator
to OFF
am. Set tape reader SPL/LOOP
switch to LOOP
an. Press SPU ON switch-indicator
to off
Self-test tape rewinds and stops at
tape beginning. REVERSE switch-
indicator lights
After self-test tape stops, observe
that there is no subsequent for-
ward motion of self-test tape and
tape reader LED display lamps 3,
8, and 10 are lighted
REVERSE switch-indicator goes off
Self-test tape does not rewind, does
not stop rewinding, has forward
motion after stopping, or LED
display does not light as indicated:
a. Check REVERSE switch-indica-
tor for proper operation
b. Replace A1
c. Perform tape reader testing and
troubleshooting
REVERSE switch-indicator does not
go off: Check REVERSE switch
for proper operation and for
shorts
SPU ON switch-indicator goes off
SPU ON switch-indicator does not
go off: Check SPU ON switch-
indicator for proper operation and
for shorts
8-54.12
Change 1
