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Flow Chart of Troubleshooting
9-50
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9-2-6. Abnormal WCDMA900 Rx Operation
RX ON
AMP=-50dBm
1. Check
FEM Ant
Resolder RFS100,
L103, C107
F100 PIN20
≥
-65dBm
YES
Check Antenna
Switch Control
2. Check
FEM output
Check F100
PIN15=H, PIN14=H
PIN13=H, PIN12=L
NO
F100 PIN17
≥
-70dBm
NO
YES
Resolder or Change
3. Check
Duplexer Input
NO
YES
Resolder F100,
C176, L123
DUF101 PIN6
≥
-75dBm
YES
4. Check
Transceiver Input
RTF100 PIN30,31
≥
-75dBm
NO
Resolder F100
C106, C117, L124, L127
YES
NO
Check RTF100,
UCP300
END
Содержание GT-I8910
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