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TM 11-5820-890-20-2
5-34
5.3.
TROUBLESHOOTING FLOWCHARTS. Continued
CHART 6
NO AUDIO HEARD AT HANDSET AND/OR LOUDSPEAKER WHEN RT IS IN SELF TEST.
(Sheet 3 of 3)
A
D
B
C
E
F
K
S
U
T
L
H
M
V
R
P
PSA P1
N
J
Z
Y
d
b
a
S
R
X
W
V
T
U
Q
P
N
M
L
K
J
F
E
D
C
B
A
G
H
PSA J2
2
SH 3
1. SET LS 671 CB1 TO OFF.
2. REMOVE PSA FROM MB.
3. IF LS 671 IS CONNECTED TO MB J3, CHECK
CONTINUITY AT PSA J2, PIN D TO P1, PIN H.
4. IF LS 671 IS CONNECTED TO MB J4, CHECK
CONTINUITY AT PSA J2, PIN D TO P1, PIN P.
NO
YES
OPEN
?
REPLACE PSA.
1. REMOVE CX 13292 FROM MB J3 OR J4.
2. IF CX 13292 IS CONNECTED TO MB J3,
CHECK CONTINUITY AT MB J5, PIN H
TO J3, PIN K.
3. IF CX 13292 IS CONNECTED TO MB J4,
CHECK CONTINUITY AT MB J5, PIN P
TO J4, PIN K.
NO
YES
OPEN
?
REPLACE MB.
NO
YES
OPEN
?
1. REMOVE CX 13292 FROM LS 671 J1.
2. CHECK CONTINUITY AT CX 13292 P1, PIN K
TO P2, PIN K.
REPLACE CX 13292.
REPLACE LS 671.
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
PSA J3, J4
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