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Troubleshooting
Sound Problem
Step. Check point Result value Defect point
1 Confirm the defect symptom. - -
2 *#0*# → speaker
No sound Go to the next step
Normal S/W or Settings
3
Replace the speaker, and also replace the Assy
case-rear to use a new speaker tape.
Solved speaker
Not solved Go to the next step
4
Activate the speaker path.
(*#0*# → Speaker)
- -
5
Check the signal at two of speaker contacts.
(Using oscilloscope)
Notice : It should be measured when the
speaker path is activated on.
Same signal compared with a
good PBA
Go to step 6
No signal Go to step 7
6
Check if the SPK is contacted to PBA well, and
assemble the phone again.
Solved Assembly error
Not solved Go to step 3
7
Check if the SPK is contacted to PBA well, and
If yes, replace the PMIC.
Solved PMIC
Not solved Go to step 3
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