Samsung GT-i8910 Service Manual page 95
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Also See for GT-i8910:
- Quick start manual (47 pages) ,
- User manual (78 pages) ,
- User manual (112 pages)
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Flow Chart of Troubleshooting
9-2-8. Abnormal WCDMA1900 Rx Operation
RX ON
AMP = -50dBm
1. Check
FEM Ant
F100 PIN20
≥ -65dBm
2. Check
FEM output
F100 PIN18
≥ -70dBm
3. Check
Duplexer Input
DUF100 PIN6
≥ -75dBm
4. Check
Transceiver Input
RFT100 PIN32,33
≥ -75dBm
Check RFT100,
UCP300
END
NO
YES
NO
YES
NO
YES
NO
YES
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Resolder RFS100,
L103, C101
PIN12=H
PIN13=L
PIN14=H
PIN15=L
YES
Resolder DUF100,
C145, L136
Resolder or change
C150, C159,
L117
9-58
Check Antenna
Switch Control
NO
Resolder or Change
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