TM 11-6625-2440-12
Seq
Symptom
Probable Cause
Corrective action
No.
8
PLATFORM, MONITOR, OVER-
Circuit card 1A1A1 or 1A1A3
Replace circuit card 1A1A1 (para 4-18).
TEMP, or MAG HDG
faulty.
If this fails to correct the trouble,
SERVO indicator does not
replace circuit card 1A1A3 (para 4-18).
light.
9
PLATFORM, MONITOR, OVER-
Circuit card 1A1A1 or 1A1A3
Replace circuit card 1A1A1 para (4-18).
TEMP, or MAG HDG
faulty.
If this fails to correct the trouble
SERVO indicator does not go
replace circuit card 1A1A3 (para 4-18).
out.
10
Voltage indicated is out of
Circuit card 1A1A3 faulty
Replace circuit card 1A1A3 (para 4-18).
Tolerance.
11
Circuit card 2A1A9 or 2A1A16
Replace circuit card 2A1A9 (para 4-18).
for TEST SET SCAN switch
faulty.
If this fails to correct the trouble,
position 7, 8, 9, or 10 is out of
replace circuit card 2A1A16 (para 4-18).
tolerance.
12
Frequency indicated for TEST
Circuit card 2A1A12 faulty
Replace circuit card 2A1A12 (para 4-18).
SET SCAN switch position 11 or
12 is out of tolerance.
13
a. CAGE indicator does not light.
a. Circuit card 2A1A10 or 2A1A16
a. Replace circuit card 2A1A10 (para
faulty.
4-18). If this fails to correct the
trouble, replace circuit card 2A1A16
b. PLATFORM, MONITOR,
b. Circuit card 2A1A3 faulty
b. Replace circuit card 2A1A3 (para
OVERTEMP, or MAG HDG
4-18).
SERVO indicator does not light.
14
a. Voltage indicated for TEST
a. Circuit card 2A1A10 faulty
a. Replace circuit card 2A1A10 (para
SET SCAN switch position 4, 5,
4-18).
6, 8, 11, or 12 is out of tolerance.
b. Voltage indicated for TEST
b. Circuit card 2A1A11, 2A1A10,
b. Replace circuit cards in the following
SET SCAN switch position 9 is
2A1A9, or 2A1A16 faulty.
order until faulty circuit card is
out of tolerance.
located: 2A1A11, 2A1A10, 2A1A9,
2A1A16 (para 4-18).
c. Voltage indicated for TEST
c. Circuit card 2A1A11 faulty
c. Replace circuit card 2A1A11 (para
SET SCAN switch position 10 is
4-18).
out of tolerance.
15
Voltage indicated for PLATFORM
Circuit card 2A1A10 faulty
Replace circuit card 2A1A10 (para 4-18)
SCAN switch position 11, or 12
Is out of tolerance.
16
a. CAGE indicator does not go
a. Circuit card 2A1A10 faulty
a. Replace circuit card 2A1A10 (para
out or LEVEL indicator does not
4-18).
light when CAGE switch is set to
OFF.
b. Level mode voltage indicated
b. Circuit card 2A1A10 faulty
b. Replace circuit card 2A1A10 (para
for TEST SET SCAN switch posi-
4-18).
tion 4, 5, 8, 11, or 12 is out of
tolerance.
c. Level mode voltage indicated
c. Circuit card 2A1A10 or 2A1A11
c. Replace circuit card 2A1A10 (para
for TEST SET SCAN switch posi-
faulty.
4-18). If this fails to correct the
tion 6 is out of tolerance.
trouble, replace circuit card 2A1A11
d. Level mode voltage indicated
d. Circuit card 2A1A11, 2A1A9, or
d. Replace circuit cards in the following
for TEST SET SCAN switch posi-
2A1A16 faulty.
order until faulty circuit card is
tion 9 is out of tolerance.
located: 2A1A11, 2A1A9, 2A1A16
e. Level mode voltage indicated
c. Circuit card 2A1A11, 2A1A10,
c. Replace circuit cards in the following
for TEST SET SCAN switch posi-
2A1A9, or 2A1A16 faulty.
order until faulty circuit card is
tion 10 is out of tolerance.
located: 2A1A11, 2A1A10, 2A1A9,
2A1A16 (para 4-18).
4-5
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