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TM 11-5820-890-20-2
2-56
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 14
AM 1780 LAMP IS NOT LIT WITH VAA DS1 LIT.
(Sheet 1 of 2)
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.
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
MB J3
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
AM 1780 J501, J504, J505, J506, J507
NO
YES
OPEN
?
REPLACE AM 1780.
1. SET RT TO STBY.
2. SET VAA CB1 TO OFF.
3. REMOVE CX 13300 FROM AM 1780 J501.
4. CHECK CONTINUITY AT AM 1780
J501, PIN C TO J504/J507, PIN C.
NO
YES
OPEN
?
REPLACE MB.
1. REMOVE CX 13313 OR CX 13417 FROM
CX 13300.
2. REMOVE RT.
3. REMOVE VAA.
4. REMOVE CX 13313 OR CX 13417 FROM MB
J3.
5. CHECK CONTINUITY AT MB, J3, PIN C
TO J5, PIN C.
1
SH 2
START
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