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Flow Chart of Troubleshooting
10-50
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10-2-5. WCDMA2100 RX
RX ON
AMP=-50dBm
YES
Re-solder CN101,
C101, L102
U101 PIN17
≥
-65dBm
Check Antenna
Switch Control
NO
Check U101
PIN6=H, PIN7=L
PIN8=L , PIN9=L
YES
U101 PIN18
≥
-70dBm
Re-solder or Change
U101
NO
YES
Re-solder F106,
L117, L112, C121
F106 PIN5
≥
-75dBm
YES
NO
Re-solder or change
C286, C284
U201 PIN36
≥
-75dBm
YES
NO
Re-solder or Change
U201
U201 PIN34
≥
-75dBm
YES
NO
Re-solder or Change
F201, L204, R210, C243, L206,
C242, C244, C245, L203, L205
F201 PIN3,4
≥
-75dBm
YES
NO
Check U201, UCP301
END
Summary of Contents for I8510
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