Samsung SM-A307FN Service Manual page 100

8. Level 3 Repair
8-4-9. Speaker Part
Check speaker function.
Play MP3 with maximum volume level.
Check SPK Module.
(crack, open, damaged)
(SUB PCB)
Check C-clips
ANT1003, ANT1004
Check the signals on
L6008,L6010
Check SPK AMP : U6000
(crack, open, damaged)
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Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
END
No
Replace SPK Module
No
Resolder or Replace
ANT1003, ANT1004
No
Replace L6008,L6010
No
Replace U6000