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SG H- X100 F low Chart of Troubleshooting
13. DCS Receiver
R XO N
R Fin p u t : C Hcen ter freq: +67.7k H z
A m p: -50d B m
Y es
U 100 Pin5
>= -65dB m
Y es
U 100 pin7
>= -65dB m
Y es
F102 pin1
>= -70dB m
Y es
U 103
pin38 >= -70dBm
pin39 >= -70dBm
Y es
U 103 pin6, 7, 8, 9
>= 1V
Y es
R 135, R 136, R 137,
R 138 >= 1V
Y es
C heck U 200
E N D
N o
R esolder C N 100, C 108
N o
N o
R esolder F102, C 114, L 116
N o
R esolder L 110, L 114, L 115
N o
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C heck U 100
pin8 = L , pin4 = L
Y es
C heck U 103
pin4, 10, 22 >=2.7V
Y es
7- 18
N o
C heck A N T Switch
control circuit
R esoder U 100
N o
C heck &R eslder
U 103, R 105, R 109
R F13M H z, R F PSU Part
R esolder U 103
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