|
| |
TM 11-5820-890-20-2
2-72
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 23
AM 1780 LAMP IS NOT LIT WITH PSA DS1 LIT.
(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, J504,J505, J506, J507
A
D
B
C
E
F
K
S
U
T
L
H
M
V
R
P
PSA P1
N
J
PSA J1
K
L
F
E
R
M
H
C
B
A
D
J
N
P
1. REMOVE PSA FROM MB.
2. SET UP DIGITAL MULTIMETER TO MEASURE
A DIODE.
3. AT PSA, PLACE RED DMM LEAD AT J1, PIN B,
AND BLACK DMM LEAD AT P1, PIN C.
NO
YES
OPEN
?
1
SH 2
REPLACE AM 1780.
1. SET AM 1780 MAIN PWR TO OFF.
2. SET PSA CB1 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 J504/J507, PIN C.
NO
YES
OPEN
?
REPLACE PSA.
START
|
