Lenovo A859 Service Manual - Page 27

Browse online or download pdf Service Manual for Cell Phone Lenovo A859. Lenovo A859 36 pages.
Also for Lenovo A859: Important Product Information Manual (23 pages), Quick Start Manual (6 pages), Quick Start Manual (13 pages), Quick Start Manual (33 pages)

Print Page

Repair Manual of Lenovo S920 Mobile Phone

Fault 2:



Fault: The output power of the mobile phone is too high.



Cause: The cable isn't well connected in calibration.



Shooting:

Calibration power is too high

Check RF cable and fixtures to

ensure well connection

Fault 3:



Fault: After repeated calibration, the power is still low.



Cause: Some element patches of PA and surrounding VAPC input are displaced or PA is

damaged.



Shooting:

After repeated calibration, the

power is still low.

PA（U2102） may be

partially

damaged;

recalibrate.

Reconnect and calibrate

Replace

Vramp

circuit