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TM 11-5820-890-20-2
2-24
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 2
AM 1780 CB501 TRIPS WHEN SET TO ON.
(Sheet 1 of 3)
NOTE:
Remove cables one at a time to
ensure isolation to the short.
CB501 will stop tripping after
the faulted cable is removed.
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
C 2298 J801, J804
1. REMOVE A CX 4723/7060, FROM AM 1780
J504, J505, J506, OR J507.
2. SET CB501 TO ON.
NO
YES
SHORT TO
GROUND
?
REPLACE CONTROL BOX.
NO
YES
DRIVER'S
CONTROL BOX
SUSPECTED
?
1
SH 2
NO
YES
CB501
TRIPS
?
REPLACE AM 1780.
NO
YES
ALL
CX 4723/7060
REMOVED
?
1. REMOVE CX 4723 FROM C 2298 J801/J804.
2. CHECK CONTINUITY AT J801/J804,
PIN C TO PIN A (GND).
REPLACE CX 4723.
START
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