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TM 11-5820-890-20-2
2-46
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 10
AM 7239 DS1 IS NOT LIT.
(Sheet 1 of 1)
J
H
P
K
S
R
N
M
L
F
E
D
B
A
C
V
U
T
MB J5
NO
YES
DS1
LAMP
LIT
?
REPLACED LAMP IS BAD.
REPLACE MB.
1. SET VAA CB1 TO OFF.
2. REMOVE VAA FROM MB.
3. MEASURE VOLTAGE AT MB J5,
PIN B TO PIN A (GND).
NO
YES
22 TO 32
V dc
?
REPLACE VAA.
1. REPLACE VAA DS1 LAMP.
2. SET VAA CB1 TO ON.
START
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