Table of Contents
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Earphone detect problem
Earphone detect
1
Level of pin 5 of CON401
about 1.6V?
5
Yes
Check soldering
U404
Yes
Check working
U404
Yes
4
Earphone sending path problem
Earphone
sending
path problem
3
Level pin4 of CON401
is about 1.6V
Yes
Level of C232 is
About a few tens
or hundreds VAC?
Yes
problem
No
Level of R206, R207
Re-soldering R206, R207
No
No
No
Re-solder
R206, R207
No
Re-solder
C232
Yes
about 2.4V?
No
Re-solder U404
Replace U404
No
Re-download
Does it work well?
Yes
Does it work well?
Yes
4
Change main
5
software
No
board
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