Lenovo S930 Service Manual - Page 12

Browse online or download pdf Service Manual for Cell Phone Lenovo S930. Lenovo S930 33 pages.
Also for Lenovo S930: Quick Start Manual (6 pages), Important Product Information Manual (20 pages)

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LENOVO S930 Cellphone Service Manual

Replace speaker. Retry to see whether it

rings.

Check whether audio power amplifier on

antenna sub-board has a dry joint problem

or is damaged. Repair soldering or replace

it. Try again to see whether it rings.

Check whether the connections of the main

FPC connectors are OK.

Test with earphones. If there's sound in

earphones, then there is audio signal

input. Check whether the components

related to the audio power amplifier have

dry joint problems. Re-solder. Check

whether the problem is fixed.

Check PMU chip U1201. If it's damaged,

replace it.

It does not ring.

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