SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-23
9-13. WCDMA RX
RX ON
Sector Power = -50dBm
F101 pin11
>=-65dBm
Resolder RFS101,
C105,L101,R105,L132
F101 pin9
>=-70 dBm
No
Yes
No
Check F101
truth table
Check R107,R110,
R116,UCP201
No
Resolder or
Change F101
Resolder or Change F104,
C165,C197,L129
Yes
No
Yes
Check U101 & UCP201
Check
C141,C145,C144,L112,L114,F106
,L117,C143,L113
END
F104 pin5
>=-75 dBm
Yes
No
No
U101 pin26
>=-75 dBm
Yes
U101 pin29
>=-75 dBm
Yes
U101 pin34,35
>-75dBm
Yes
1.
Check FEM(F101) input
2.
Check FEM(F101) output
3.
Check Duplexer(F104)
4.
Check RTR6275(U101) input
5.
Check RTR6275(U101) output
6.
Check RTR6275(U101) I/Q input
7.
Check RTR6275(U101) , MSM6260 (UCP201)
Resolder or Change
R103,C106
No
②
①
③
④
⑤
⑥
⑦
⑧
Resolder or Change
U101
Pin#6: High
Pin#5: Low
Pin#4: High
