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Repair Manual of Lenovo S920 Mobile Phone

3.1.6

No ring

Replace Speaker and recheck whether it is

normal?

Check to see whether the SPK contact

shrapnel is normal?

Replace main FPC and check whether it is OK .

Check whether main FPC connector is welded

well

Use earphone to test whether there is sound; if

there is sound from earphone, there is audio

signal to input. Check whether U1201 module

device is of cold solder joint; recheck whether it

is ok after re-welding,

Check to see whether the main chip U1302 is

damaged. Replace it if damaged.