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5-13. DCS Receiver
RX On
RF input : 698 CH
Amp. : -50 dBm
1
-65 dBm
2
-65 dBm
3
-73 dBm
4
pin 16, 17
-40 dBm
5
pin 1, 2, 5, 6
-47 dBm
6
-25 dBm
7
-30 dBm
8
pin 26, 27
END
Y
U505
Pin 9
Y
U505
Pin 7
N
Y
F500
pin 5
Y
U507
N
Y
F301
Y
F300
pin 1
N
Y
F300
pin 4
Y
U300
Y
SAMSUNG Proprietary-Contents may change without notice
SGH-A408 Flow Chart of Troubleshooting and Circuit Diagram
N
Resolder or Change CN500
Resolder & U505
Pin 7
-65 dBm
Y
N
Check OSC300
pin 1
-10 dBm
Y
N
Check D300
pin 1
1 V
Y
N
N
5-21
Check voltage
U505 pins
Pin 2 : L
N
Pin 4 : H
Pin 8 : H
Pin 10 : L
Resolder
F500
Change OSC300
N
Change U507
Change F301
Resolder or change
N
D300
Change
U300
Change
F300
Change U300
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