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SGH-N620E Flow Chart of Troubleshooting
14. DCS Transmitter
TX ON (0Level)
Yes
U302 Pin8
>= 25dBm
No
U301 pin3
>= 25dBm
No
U303 pin11
>= 25dBm
No
U303 pin1
>= 0dBm
No
U302 pin24
>= 0dBm
No
U302 pin5, 6, 7, 8
>= 40mV
Yes
Resolder U301
END
Yes
Yes
Yes
Yes
Yes
Resolder R302,R303,R304,C315
Yes
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Resolder CN301
Check
VC1 : H
VC2 : L
No
Resolder C311
Check U303
+VBATT, pin2,5,8
OK?
No
Check U302
pin9,10,12,13 >=
-6dBm
OK?
Check U302
pin9,10,12,13 >=
-6dBm
OK?
7-19
Yes
Change or Resolder U301
Check ANT Switch
control circuit
Yes
Resolder or Change U303
Check +VBATT or PAM
control signal
No
Check & Resolder
I/O signal, RF 13MHz
No
Resolder U302
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