Acer Fossil HD B1-760 Service Manual page 84

10. MP4 plays abnormally
NO. Issue Description
Multi-media plays
1
abnormally
11. Earphone issue
NO. Issue Description
1 No function
Earphone acoustic
2
anomaly
12. Receiver/speaker box issue
NO. Issue Description
Acoustic anomaly
1
2
No sound
13. Microphone issue
NO. Issue Description
1
Acoustic problem
2 MIC has no sound
79
Cause
MB is damaged
SW issue
Speaker box is defective
Speaker box isn't well assembled
Cause
Earphone is defective
MB is damaged
Earphone is defective
MB is damaged
Cause
Speaker box has defects
MB has defects
Speaker box connects poorly
Speaker box has defects
MB has defects
1. Check if the speaker bracket is
welded well to MB.
2. Check if the speaker is good.
3. Check and repair MB
Cause
MIC has defects
Miss assembling MIC rubber case
MB has defects
MB has defects
Solution
Repair MB
Upgrade SW
replace Speaker box
re-assemble
Solution
replace earphone
Repair MB
replace earphone
Repair MB
Solution
replace
Repair MB
re-assemble
replace Speaker box
Repair MB
Solution
replace
Re-assemble
Repair MB
Repair MB