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TM 11-5820-890-20-2
2-136
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 39
RT-B WILL NOT KEY FROM CREWMEMBER C 2298.
MONITOR SWITCH SET TO C.
(Sheet 1 of 1)
NOTE:
The driver's C 2297 is unable
to monitor or key RT-B in the
C position. The slip ring
assembly does not have the
proper connections.
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
AM 1780 J505, J506, J507
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
NO
YES
1.0 TO 2.5
V dc
?
REPLACE AM 1780.
1. CONNECT SUSPECT CX 4723 TO AM 1780
J505 J507.
2. REMOVE SUSPECT CX 4723 FROM C 2298
J801/J804.
3. MEASURE VOLTAGE AT CX 4723,
PIN F TO PIN A (GND).
1. REMOVE ALL CX 4723 CABLES FROM
AM 1780 J504 J507.
2. MEASURE VOLTAGE AT SUSPECT AM 1780
J505 J507, PIN F TO PIN A (GND).
NO
YES
1.0 TO 2.5
V dc
?
REPLACE CX 4723.
REPLACE C 2298.
START
CX 4723
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