8-51
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
c.
d.
e.
f.
If no FAILUR/ACTION indication,
check tape reader fuses and cable
W203
Replace A1 and then A3
Perform tape reader testing and trou-
bleshooting (table 8-8). Recheck step
g
Check for faulty self-test tape
n.
o.
p.
q.
r.
s.
t.
u.
v.
Press SELF TEST switch-indi- SELF TEST switch-indicator goes
cater to off
off. FAILURE/ACTION indica-
tor displays 77
Set tape reader SPOOLING
switch to DISABLE
Press SPU ON switch-indicator SPU ON switch-indicator goes off
to off
Connect cable W205 as shown
in figure 8-2
Connect cable W210 as shown
in figure 8-2
Turn TTY keyboard MOTOR
switch to OFF
Connect TTY cable W212 as
shown in figure 8-2. Refer to
notes 2 and 3, figure 8-2
Connect TTY power cable to
115 VAC, 60 Hz
Press SPU ON switch-indicator Same as step b
to on
EXECUTE switch-indicator lights.
IMU FAIL/COMP FAIL indi-
cator lights. OFF or portion of
PADS ON/OFF switch-indica-
tor lights
Self-test tape runs forward but FAIL-
URE/ACTION indicator does not dis-
play 40 when tape stops: Check num-
ber displayed for its definition in table
8-7 and perform action specified
Self-test tape does not stop:
a. Check for faulty self-test tape
b. Replace A3, then A1, and then A2
SELF TEST switch-indicator does not
a.
b.
go off:
Check SELF TEST switch-indicator
for proper operation or shorted wir-
ing
Replace A3
SPU ON switch-indicator does not go
off: Check SPU ON switch-indicator
for proper operation
Same as step b
EXECUTE switch-indicator does not
light: Replace buffer unit, then A1,
and then A3
