8-50
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
j. Press EXECUTE switch-indica-
EXECUTE switch-indicator goes Same as i
tor to off
off
k. Install the self-test tape on the
tape reader per paragraph 3-6.
Manually move tape until ar-
rows on tape are past read head
NOTE
Do not use masking tape to secure
diagnostic tape to the take-up
reels. Wrap the free end of tape
around the take-up spool hub until
no slippage occurs
l. Set tape reader SPOOLING
switch to ENABLE
m. Press the SELF TEST switch-
indicator to on
NOTE
If the tape leader exceeds 20
inches or 3 seconds before data on
the tape reaches the head, the tape
reader will stop and it will
essary to press SELF
switch-indicator again
be nec-
TEST
SELF-TEST
switch-indicator SELF TEST switch-indicator does not
lights. Self-test tape runs for-
light but self-test tape runs forward
ward and then stops. FAIL-
and stops with a FAILUR/ACTION
URE/ACTION indicator dis-
indication of 40:
plays 40 when tape stops and
PARITY ERROR indicator
a. Check SELF TEST switch-indicator
lights
lamps (DS12) and replace if necessary
NOTE
b. If lamps are OK, check lamp wiring
Various lamps will cycle on and
SELF-TEST switch-indicator does not
off during the self-test operation
light and tape does not run forward
and are to be ignored unless speci-
fied in this procedure to be ob-
a. Recheck step h because the self-test
served.
cannot proceed unless the sequence
of step h was completed correctly
b. Check SELF TEST switch-indicator
(DS12) for proper operation by
checking continually between pins
A-C and A-NO when switch is
pushed. Replace DS12 if necessary
c. Replace A3
SELF TEST switch-indicator lights and
self-test tape does not run forward:
a. Check that tape reader SPOOLING
switch is set to ENABLE
b. Observe FAILUR/ACTION indica-
tor after 10 seconds. Take appropri-
ate action if there is a FAILURE/
ACTION indication
