SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
9-49
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9-15. WCDMA 2100 Transmitter
TX ON
Target Power = 23dBm
U100 pin11
>=10 dBm
Resolder RFS100,
C104,L100,R100, C105
U100 pin9
>=8 dBm
Yes
No
Yes
Check
U100 truth
table
Check
R106,R109,
R118,UCP200
No
Resolder or
Change U100
Resolder or Change
DUF100, L126,C171
Yes
Yes
No
Check U101 & UCP200
Resolder or change
F103,L117
END
DUF100 pin1
>=5 dBm
No
Check
Operating
mode
No
Check
UCP200
Check VBAT or
Resolder or
Change PAM101
Yes
Yes
Yes
PAM101 pin8
>=-15 dBm
No
PAM101 pin2
>=-30 dBm
No
F103 pin1
>-30dBm
No
Check UCP200
Yes
Pin#6: High
Pin#5: Low
Pin#4: High
Pin#3(VMode2)=L
Pin#4(VMode1)=L
Pin#3(VENA)=H