Samsung GT-i8910 Service Manual page 87
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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
9-2-6. Abnormal WCDMA900 Rx Operation
RX ON
AMP=-50dBm
1. Check
FEM Ant
F100 PIN20
≥ -65dBm
2. Check
FEM output
F100 PIN17
≥ -70dBm
3. Check
Duplexer Input
DUF101 PIN6
≥ -75dBm
4. Check
Transceiver Input
RTF100 PIN30,31
≥ -75dBm
Check RTF100,
UCP300
END
YES
NO
YES
NO
YES
NO
YES
NO
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Resolder RFS100,
L103, C107
Check F100
PIN15=H, PIN14=H
PIN13=H, PIN12=L
YES
Resolder F100,
C176, L123
Resolder F100
C106, C117, L124, L127
9-50
Check Antenna
Switch Control
NO
Resolder or Change
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