Troubleshooting
Top Speaker
Symptom
Potential
Root Cause
Procedure
T019: Top Speaker no sound
T020:Top Speaker low sound
T021: Top Speaker distorted
sound
Mesh not clean
● Inspect Top Speaker mesh and a soft ESD
brush to remove any debris.
●
Test audio.
Internal debris
● If sound quality is still poor, inspect the mesh and
speaker with a microscope.
●
Disassemble the device and inspect the speaker.
Use an ionizing air fan to remove any debris and
test audio.
Connectivity
issue
● Check if connectivity between Top SPK Pad and
Logic board are normal.
● If they are not fully buckled, re-assemble and
then retest.
Connectors Location
Component issue
●
If sound quality is still poor, use a good Top
Speaker and Logic board to cross check with
original ones
●
Replace the defective component.
Disassembly
● Logic board
●
Top Speaker