Lenovo A516 Panduan Servis - Halaman 36

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Repair Manual of Lenovo A516 Mobile Phone

4.5 WCDMA comprehensive test

Fault: ACLR or SEM

Cause: No calibration or WCDMA PA（U2202,U2203） is in cold solder joint; RF transceiver

(U2105) doesn't work well.

Repair manner:

Whether it is OK after recalibrating WCDMA?

Re-weld PA or replace PA and the devices in

transmission circuit?

Re-weld

transceiver

4.5.2 ILPC comprehensive test abnormal

Fault: ILPC

Cause: No calibration or just passing calibration.

Repair manner: The same as 4.5.1.

4.5.3 FrequencyErr

Fault: FrequencyErr

Cause: No calibration, or suffered outside interference

Repair manner: Recalibrate WCDMA and test; replace U2104.

ACLR or SEM

replace