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TM 11-5820-890-20-2
2-149
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 42
SRM WILL NOT KEY FROM COMMANDER'S C 2298.
MONITOR SWITCH AT ALL POSITION.
(Sheet 2 of 4)
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
AM 1780 J504
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
1. SET PSA CB1 TO OFF.
2. SET PSA SWITCH S1 TO RMT.
3. SET PSA CB1 TO ON.
4. SET AM 1780 MAIN PWR TO NORM.
5. REMOVE CX 4723 FROM COMMANDER'S
C 2298 J801/J804.
6. MEASURE VOLTAGE AT CX 4723, PIN D TO
PIN A (GND).
NO
YES
1.0 TO 2.5
V dc
?
REPLACE CX 4723.
1. REMOVE COMMANDER'S CX 4723 FROM
AM 1780 J504.
2. MEASURE VOLTAGE AT AM 1780 J504,
PIN D TO PIN A (GND).
REPLACE AM 1780.
NO
YES
1.0 TO 2.5
V dc
?
REPLACE COMMANDER'S
C 2298.
1
SH 2
CX 4723
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