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TM 11-5820-890-20-2
2-54
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 13
RT DISPLAY DOES NOT LIGHT WITH AM 1780 MAIN PWR SWITCH SET TO NORM.
(Sheet 2 of 3)
NOTE:
The normal installation connects the
CX 13313 or CX 13417 and CX 13300
from MB J3 to the AM 1780 connector
J501. Connector J501 provides the dc
power to the rest of the VIC system.
MB J4 could be a possible connection
for some systems.
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
MB J3
J
H
P
K
S
R
N
M
L
F
E
D
B
A
C
V
U
T
MB J5
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
NO
YES
OPEN
?
REPLACE MB.
1. REMOVE CX 13313 OR CX 13417 FROM MB
J3.
2. REMOVE POWER CABLE FROM MB J1.
3. CHECK CONTINUITY AT MB J5,
PIN E TO J3, PIN D.
NO
YES
OPEN
?
REPLACE CX 13300.
1. CONNECT CX 13313 OR CX 13417 TO MB J3.
2. REMOVE CX 13313 OR CX 13417 FROM
CX 13300.
3. CHECK CONTINUITY AT OPEN CX 13300
CONNECTOR, PIN B TO PIN D.
REPLACE CX 13313 OR
CX 13417.
1
SH 2
CX 13300
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