Dcs Transmitter - Samsung SGH-X600 Service Manual

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SG H- X 600 F low Chart of T roubleshooting

15. DCS Transmitter

TXO N (5L evel)
Y es
U 102 Pin10
>= 20dBm
N o
U 102 pin1
>= 20dBm
N o
U 101 pin11
>= 20dBm
N o
U 101 pin1
>= -11dBm
N o
O SC 100 pin5
>= -8dBm
N o
U 103 pin6, 7, 8, 9
>= 1V
N o
R 134, R 135, R 136,
R 137 >= 500m V
N o
C heck U 200
E N D
Y es
R esolder C N 101, C 101
Y es
Y es
R esolder C 110, L 115
Y es
Y es
R esolder R 105, R 107, R 108
Y es
R 130,R 131,C 143,C 144,C 146
Y es
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
C heck U 102
pin4 = H(2.68V ),
pin7 = L
N o
C heck U 101
+V BA TT, pin4, 1
O K ?
N o
C heck &R esolder
O SC 100
C heck U 103
pin4, 22 >= 2.7V
7- 20
Y es
C hange or R esolder U 102
C heck A N T Switch
control circuit
Y es
R esolder or C hange U 101
C heck +V BA TT or PA M
control signal
Y es
R esolder U 103

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