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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
7-20
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14. DCS Transmitter
U102 pin10
>= 13dBm
Resolder CON101, L112
TX ON (0Level)
Check U102
pin7 = L,
pin4 = H (2.68V)
U102 pin1
>= 13dBm
U105 pin31
>= 13dBm
U105 pin37
>= 12dBm
U105 pin37
>15dBm
Change or Resolder U102
Check ANT Switch
control circuit
Resolder C141
Resolder R129, R130, R131
U101 pin6, 7, 8, 9
>= 500mV
Yes
Check U105
+VBATT, 42,43,
37 OK?
Resolder or Change U105
Check +VBATT or PAM
control signal
Check & Resolder RFLO
signal, RF26MHz,
RF PSU Part
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
END
Check U200
Check U100 pin 10,
22,23>=2.7V
OK?
Resolder U100
Yes
No