|
| |
TM 11-5820-890-20-2
5-44
5.3.
TROUBLESHOOTING FLOWCHARTS. Continued
CHART 11
NO SIDETONE HEARD AT THE LS 671.
(Sheet 1 of 3)
PSA J1
K
L
F
E
R
M
H
C
B
A
D
J
N
P
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
START
1. SET LS 671 CB1 TO OFF.
2. REMOVE PSA FROM MB.
3. CHECK CONTINUITY AT PSA J1, PIN N
TO J2, PIN E.
NO
YES
OPEN
?
REPLACE RT.
1. SET DMM AS AC VOLTMETER.
2. MEASURE AC VOLTAGE AT PSA J1, PIN N
TO PIN A (GND).
3. WHISTLE SHARPLY INTO LS 671 HS WHILE
OBSERVING AC VOLTMETER.
NO
YES
AC VOLT
CHANGE
?
REPLACE PSA.
1
SH 2
|
