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SAMSUNG Proprietary-Contents may change without notice
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Flow Chart of Troubleshooting
9-26
9-14. EGSM TX
TX ON (PCL 5 level)
F101 pin11
>=5 dBm
F101 pin17
>=5 dBm
Yes
No
Yes
Check
F101 truth
table
No
Resolder or
Change F101
Resolder or Change
F101,C100,L115
Yes
Yes
No
Check U101
END
PAM100 pin9
>=5 dBm
No
Check Vramp
OK
Resolder PAM100,
Check UCP201
Check VBAT or
Resolder / Change
PAM100
Yes
No
No
PAM100 pin7
>=-30 dBm
1.
Check FEM(F101) output
2.
Check FEM(F101) input
3.
Check PAM(PAM100) output
4.
Check PAM(PAM100) input
5.
Check RTR6275(U101)
②
①
③
④
⑦
Pin#6: High
Pin#5: Low
Pin#4: Low
Check
Operating
mode
Yes
No
Resolder or change
R129,UCP201
⑤
Pin#3(BS)=L
Pin#1(EN)=H
Resolder RFS101,
C105,L101,R105,L132
Check
R107,R110,
R116,UCP201