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| TM 11-5820-670-30
2-26. TROUBLESHOOTING CHARTS. (CONT)
CHART 2-24
Control Unit Troubleshooting
(Sheet 5 of 12)
MODE SWITCH at T/R, SEQUELCH switch at DIS.
FROM PIN
TO PIN
X,FF,HH,MM,NN,t,s,u,
PP,w,C,a,A,Y
All other pins
Inf
GG
DD
27 k
v
0
q
JJ
N
0 (VOL fully clockwise)
x
0
y
KK,B
0
d
0
e,f,F
E,D,C
Ground
b,Z,V
0
MODE SWITCH at T/R, SQUELCH switch at CARR.
FROM PIN
TO PIN
Inf
V
Ground
Y,X,FF,HH,MM,NN,t,s,
Inf
All other plns
u,PP,w,c,A,b,Z
Ground
b,Z
0
GG
DD
27 k
v
0
q
N
0 (VOL fully clockwise)
JJ
x
0
y
KK,B
0
d
0
E,D,C
e,f,F
MODE SWITCH at T/R, SQUELCH switch at TONE.
TO PIN
FROM PIN
X
Ground
0
DD
GG
27 k
FF,HH,MM,NN,t,s,PP,
w,c,A,a,Y,V
All other pins
Inf
v
0
q
JJ
N
0 (VOL fully clockwise)
x
0
y
KK,B
0
d
E,D,C
e,f,F
0
0
Ground
b,Z
2-118
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