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Level 3 Repair
8-3-21. Wi-Fi Rx/ Tx
Can't make a call in WCDMA2100 network
Check the connection
Rx: C234/ Tx: C235
@C213 or C253=2.9V?
Check TCXO CLOCK
@C249,C246=26MHz?
Replace Board(PBA)
Is the status of
BT_ANT O.K?
YES
L211,C205,C204,
YES
Check the Voltage
YES
YES
Back to
previous step
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NO
Put more lead solder
@BT_ANT(sharing Wi-Fi)
NO
Put more lead solder
each terminal
NO
Put more lead solder
each terminal
NO
Put more lead solder
each terminal
NO
activation & searching?
8-44
Can it wifi
YES
END
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