Micromax Selfie 3 E460, Service Manual

Page: 18 / 20

20. MIC
SN. Possible Cause Validation steps Action
1 Noise with uplink side
Some dust with MIC
Remove the dust/ Re-assemble MIC
holder
MIC issue
Change SUB PCBA
Re-assemble or Change Main FPC
Clean Main FPC connector/
reassemble
PCBA issue Change PCBA
2 Volume low
MIC dust-proof net issue Clean dust-proof net/ Change it
Volume is set too low by person Reset the value of volume
SW issue Flash the handset with latest SW
PCBA issue Change PCBA
No recording
SW issue Flash the handset with latest SW
MIC issue Re-assemble SUB PCBA/ Change it
PCBA issue Change PCBA
MIC 2
MIC
Main FPC
connector
Main FPC