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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-17
9-12. DCS Transmitter
END
Check UCP300
Check VBAT or PAM
control signal
No
Change or Resolder
FEM100
Yes
FEM100 pin2
≥ 25dBm
Resolder RFS101,C103,L102
TX ON (5Level)
VDD = H (2.8V),
CTRL1 = H
CTRL2,3,4 = L
FEM100 pin9
≥ 25dBm
PAM100 pin12
≥ 25dBm
PAM100 pin1
≥ -4dBm
Check ANT Switch
control circuit
Resolder or Change L109,C106,C107
Yes
Check PAM100
pin2,3,4,6 is ok?
Resolder or Change PAM100
No
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Summary of Contents for SGH-F480I
Page 29: ...8 PCB Diagrams 8 1 1 Main top ...