Micromax Selfie 3 E460, Service Manual

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21. Speaker
SN. Possible Cause Validation steps Action
1 Noise/crack
Speaker with dust Clean speaker
Speaker foam issue Change Speaker foam
Speaker issue Re-assemble/ Change speaker
2 No volume
Assemble issue Assemble again
SW issue Flash the handset with latest SW
SUB PCBA issue Re-assemble or change SUB PCBA
Main FPC issue Re-assemble Main FPC or change it
PCBA issue
Clean Main FPC connector/ change
PCBA
3 Low volume
Assemble issue Assemble again
Volume is set too low by
person
Reset the value of volume
Speaker issue Change it
Audio PA issue Change PCBA
22. Battery
SN. Possible Cause Validation steps Action
1 Battery bulge Battery issue Change battery
2 No battery
Battery PIN issue Clean battery PIN
Battery issue Change battery
Speaker
BOX
SPK Slot
Main FPC
connector
Main
FPC