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
m. Set tape
reader SPL/LOOP
switch to SPL and FAST/SLOW
switch to SLOW
n. Press the SELF TEST switch-in-
dicator 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 be necessary to
press SELF TEST switch-indicator
again.
SELF TEST switch-indicator lights.
Self TEST switch-indicator does not
Self-test tape runs forward and
light but self-test tape runs for-
then stops. FAILURE/ACTION
ward and stops with a FAILURE/
indicator displays 40 when tape
ACTION indication of 40:
stops and PARITY ERROR indica-
tor lights
a. Check SELF TEST switch-indica-
tor lamps (DS12) and replace if
necessary
b. If lamps are OK, check lamp wir-
ing
N O TE
SELF TEST switch-indicator does
Various lamps will cycle on and off
not light and tape does not run
during the self-test operation and are
forward:
to be ignored unless specified in this a.
procedure to be observed.
b.
c.
Recheck step i because the self-
test cannot proceed unless the se-
quence of step i was completed
correctly
Check SELF TEST switch-indica-
tor (DS12) for proper operation
by checking continually between
pins A-C and A-NO when switch
is pushed. Replace DS12 if neces-
sary
Replace A3
SELF TEST switch-indicator lights
and self-test tape does not run for-
ward:
a.
b.
c.
d.
e.
Observe FAILURE/ACTION in-
dicator after 10 seconds. Take ap-
propriate action if there is a
FAILURE/ACTION indication
If no FAILURE/ACTION indica-
tion, check tape reader fuses and
cable W203
Replace Al and then A3
Perform tape reader testing and
troubleshooting. Recheck step h
Check for faulty self-test tape
Change 1
8-54.7
