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TM 11-5820-890-20-2
2-65
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 21
PSA CB1 TRIPS WHEN AM-1780 SET TO NORM.
(Sheet 1 of 2)
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
AM 1780 J501
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
1
SH 2
1. SET PSA CB1 TO OFF.
2. SET AM 1780 MAIN PWR TO OFF.
3. REMOVE CX 13300 FROM AM 1780 J501.
4. SET AM 1780 MAIN PWR TO NORM.
5. CHECK CONTINUITY AT AM 1780
J501, PIN C TO PIN A (GND).
NO
YES
SHORT
TO
GROUND
?
REPLACE AM 1780.
1. CONNECT CX 13300 TO AM 1780 J501.
2. REMOVE CX 13300 FROM CX 13313.
3. CHECK CONTINUITY AT CX 13300,
PIN C TO PIN A (GND).
NO
YES
SHORT
TO
GROUND
?
REPLACE CX 13300.
START
CX 13300
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