C8, TM 9-2350-230-12
TABLE 8-4. TROUBLESHOOTING - CONTINUED
Malfunction
Probable cause
Corrective action
MISSILE SUBSYSTEM
115. PRIME POWER lamp
a.
Incorrect prime power
a. If vehicle engine is off, start
glows
engine. Set idle speed to
750 RPM. Check vehicle
circuit breaker.
NOTE. Prime power on
W1P2 pins A and B.
b.
Power supply defective
b. Replace power supply. If
PRIME POWER lamp con-
tinues to glow, request
supporting maintenance.
116. POWER SUPPLY lamp
a.
Modulator defective
a. Disconnect W1P3 and W2P2
glows
from the modulator. If
POWER SUPPLY lamp
goes out, replace
modulator. Reconnect
cables.
b. Rate sensor defective
b. Disconnect W9P1 from rate
sensor. If POWER
SUPPLY lamp goes out,
replace rate sensor.
Reconnect cable.
c.
Tracker or tracker mount
c. Disconnect W6P2 from
defective
tracker. If POWER
SUPPLY lamp goes out,
replace tracker. Recon-
nect cable. If POWER
SUPPLY lamp continues to
glow, disconnect W6P5
from tracker mount. If
light goes out, replace
tracker mount. Reconnect
cable.
d.
Power supply defective
d. Replace power supply. If
POWER SUPPLY lamp
does not go off, replace
signal data converter.
Repeat test. If problem
is not corrected, replace
test checkout panel. Re-
peat test.
e.
Cables defective
e. Request supporting main-
tenance.
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