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Flow Chart of Troubleshooting
10-56
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10-2-7. EGSM/GSM850 Tx
TX ON(5 level)
YES
Re-solder CN101,
C101, L102
U101 PIN17
≥
-5dBm
Check Antenna
Switch Control
NO
Check U101
PIN6=L, PIN7=H
PIN8=L, pin9=L
YES
U101 PIN3
≥
-15dBm
Re-solder or Change
U101
YES
NO
Re-solder C217,
R102, R103, R104
U201 PIN55
≥
-15dBm
YES
NO
END
Check U201,UCP301
Summary of Contents for I8510
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