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TM 11-5820-890-20-2
5-37
5.3.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 7
COMSEC ALARM WILL NOT CLEAR (EXTERNAL DEVICES PRESENT).
(Sheet 3 of 4)
NO
YES
OPEN
?
REPLACE MB.
NO
YES
OPEN
?
REPLACE CX 13292.
1. REMOVE CX 13292 FROM MB J3/J4.
2. CHECK CONTINUITY AT CX 13292,
P1 (SPEAKER), PIN J TO P2 (RADIO), PIN S.
NO
YES
ALARM
CLEARS
?
REPLACED LS 671
IS BAD.
REPLACE LS 671.
3
SH 3
J
H
P
K
S
R
N
M
L
F
E
D
B
A
C
V
U
T
MB J5
CX 13292 P1/P2
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
MB J3/J4
1. REMOVE CX 13314 FROM PSA J1.
2. REMOVE PSA FROM MB.
3. CHECK CONTINUITY AT MB
J5, PIN K, TO J3, PIN S
J5, PIN S, TO J4, PIN S.
4
SH 4
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