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Flow Chart of Troubleshooting
10-62
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10-2-9. EGSM RX
RX ON
AMP--50dBm
U101 PIN17
≥
-60dBm
YES
Re-solder CN101,
C101, L102
Check Antenna
Switch Control
NO
Check U101
PIN6=H, PIN7=H
PIN8=H
U101 PIN14
≥
-70dBm
YES
Re-solder or Change
U101
YES
NO
F102 PIN3,4
≥
-75dBm
YES
Re-solder or Change
F102, C109, C101
U201 PIN48,49
≥
-75dBm
NO
Re-solder or Change
C112, C113, L106, L107
YES
NO
Check U201,UCP301
END
Summary of Contents for I8510
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