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TM 11-5820-890-20-2
5-33
5.3.
TROUBLESHOOTING FLOWCHARTS. Continued
CHART 6
NO AUDIO HEARD AT HANDSET AND/OR LOUDSPEAKER WHEN RT IS IN SELF TEST.
(Sheet 2 of 3)
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
PSA J1
K
L
F
E
R
M
H
C
B
A
D
J
N
P
1
SH 2
1. SET UP DMM AS AN AC VOLTMETER ON THE
20 VOLT RANGE.
2. SET RT AS FOLLOWS:
FCTN: SQ OFF
VOLUME: FULL CW
3. MEASURE AC VOLTAGE AT PSA J1,
PIN F TO PIN A (GND).
1. REMOVE PSA FROM MB.
2. CHECK CONTINUITY AT PSA J2, PIN D
TO J1, PIN F.
NO
YES
OPEN
?
REPLACE PSA.
REPLACE RT.
NO
YES
0.3 TO 0.7
V ac
?
2
SH 3
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