Samsung SM-A320F Svc Manual page 19

Troubleshooting
Sound Problem
Step.
1 Confirm the defect symptom.
*#0*# → speaker
2
3 Replace the speaker
Activate the speaker path.
4
(*#0*# → Speaker)
Check the signal at two of speaker contacts.
(Using oscilloscope)
5
Notice : It should be measured when the
speaker path is activated on.
Check if the SPK is contacted to ANT6002,
6
ANT6003 well, and assemble the phone again.
Check point
- This document cannot be used without Samsung's Authorization -
Result value
-
No sound
Normal
Solved
Not solved
-
Same signal compared with a
good PBA
No signal
Solved
Not solved
Defect point
-
Go to the next step
S/W or Settings
speaker
Go to the next step
-
Go to step 6
Replace U6001
(Audio amp)
Assembly error
Go to step 3
Confidential