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TM 11-5820-890-20-2
2-30
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 3
AM 1780 POWER LAMP DS501 DOES NOT LIGHT.
(Sheet 4 of 5)
1. CONNECT CX 13417 TO MB J3.
2. REINSTALL VAA OR PSA.
3. REMOVE CX 13300 FROM CX 13417.
4. MEASURE VOLTAGE AT CX 13417, PIN B TO
PIN A (GND).
NO
YES
22 TO 32 V dc
?
REPLACE CX 13417.
REPLACE CX 13300.
NO
YES
22 TO 32 V dc
?
1. REMOVE CX 13417 FROM MB J3.
2. MEASURE VOLTAGE AT MB J3, PIN B
TO J5, PIN A (GND).
REPLACE MB.
4
SH 4
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
CX 13417
J
H
P
K
S
R
N
M
L
F
E
D
B
A
C
V
U
T
MB J5
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