Micromax A27 - Earphone Function Faults

22
3.16 Earphone fault
Check: earphone is ok?
No damage
Failure to use earphone
OK
Replace new earphoneNo
Check earphone connector for
soldering defect
Yes
Yes Solder earphone connector
No
Replace new mainboard
No
Is there any foreign matter in
earphone connector?
Yes Clean or replace connector
Check earphone circuit for any
fault
Yes
Mark the mainboard with
analysis result
No