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Flow Chart of Troubleshooting
9-44
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9-16. WCDMA Receiver
YES
NO
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
F100 pin 11 >= -
65 dBm
F100 pin 9 >= -
70 dBm
U100 pin34,35 >=
- 75dBm
U100 pin29 >=
- 75dBm
U100 pin26 >=
- 75dBm
F107
pin 2 >=
- 75 dBm
Check F100 truth table
Pin 5 :
LOW
Pin 4,6 : HIGH
Resolder or
Change F100
Resolder RFS100,
L100, L101, C103, C109
Resolder or Change
U100
Resolder
or Change
C184, R131
Resolder or Change
F107, L122, L123, L125,
C173
Check R103, R105,
R109, UCP200
Check F101, C137,CL112,
C142, L116, C141, L117,
C138, L115
Check U100
& UCP200
RX ON
Sector PWR =
-50dBm
Содержание SGH-I780
Страница 44: ...7 Block Diagrams 7 1 7 1 RF Solution Block Diagram ...
Страница 45: ...Block Diagrams 7 2 ...