C8, TM 9-2350-230-12
TABLE 8-4. TROUBLESHOOTING - CONTINUED
Malfunction
Probable cause
Corrective action
MISSILE SUBSYSTEM -
Continued
120. 1.1. (Transmitter test
b. Modulator defective
b. Replace modulator. Repeat
switch does not
test.
remain in the or
(up) position for
c.
Test checkout panel defective.
c.
Replace test checkout panel.
a period of at
Repeat test.
least 15 seconds
- Continued
d. Power supply defective
d. Replace power supply.
Repeat test.
e.
Signal data converter
e. Replace signal data converter.
defective
Repeat test. If problem
is not corrected, request
supporting maintenance.
120. 2. (Tracker alignment
a.
Signal data converter
a. Remove cable W6P5 from
test) Align lever
defective
tracker mount. If align
will not remain in
lever will now remain in
the right (up)
the right (up) position,
position
replace signal data con-
verter. Repeat test.
b.
Tracker mount defective
b. Replace tracker mount.
Repeat test. If problem is
not corrected, request
supporting maintenance.
120. 3. (Tracker alignment
Test checkout panel defective
Replace test checkout panel.
test) TRACKER
Repeat test.
ALIGN switch on
test checkout
panel will not
remain in the on
(up) position.
120. 4. (Tracker alignment
a.
Error lever not in the left
a.
Move error lever to the left
test) cannot null
(down) position
(down) position.
meter using AZ
or EL adjustment
NOTE. Verify that align
screws, located
lever is in the right (up) posi-
on telescope
tion.
mount.
b.
Checksight source lamp
b.
Look into the telescope.
defective
Verify that checksight
source spot-of-light is
visible. If not visible,
replace checksight source
lamp.
NOTE. Check to insure
that telescope filter lever is
in the clear position. 'Temp-
orarily cover or shade teles-
cope opening outside turret to
make spot-of-light more visible.
8-38.2
