SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
9-70
This Document can not be used without Samsung's authorization
9-2-10. Abnormal GSM850 Rx Operation
1. Check
FEM Ant
2. Check
FEM output
3. Check
Transceiver input
RX ON
AMP = -50dBm
YES
Resolder RFS100,
L103, C101
F100 PIN20
≥
-60dBm
Check Antenna
Switch Control
Check F100
PIN15=L, PIN14=L
PIN13=L, PIN12=L
NO
YES
F100 PIN1,2
≥
-75dBm
NO
Resolder or Change
F100
NO
YES
Resolder or Change
F100, L104,
L100, L101
RFT100 PIN50,51
≥
-75dBm
YES
NO
Check U100, UCP300
END
PIN12
PIN13
PIN14
PIN15