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4-1-2 No Sound
Symptom
No output at earphones
Check if the earphones are normal. / Check the cold solder on the earphones jack.
Major Checklist
1 Check if the DCVDD's power input to the CODEC is being inputted properly.
No Sound
Are the
earphones normal?
Yes
Does the YEPP
LOGO SONG play?
Yes
Do R/L-CHs output
normally?
Yes
No
Are there skips and
noises?
Yes
Are the skips and
No
noises even when playing
another file?
Yes
Does the
same symptom persist
No
even after upgrading the
firmware to the latest
version?
Yes
Replace the BOARD (needs
thorough examination).
Completion
Samsung Electronics
(Check for 1.8V)
No
No
No
Does the same
symptom persist even
after replacing the
earphones?
Yes
Does it play after
supplementing the solder
on the JACK?
Yes
Troubleshooting
No
Replace the earphones
No
1
Check if IC501 is
shorted.
Yes
Refer to wave pattern
image of Table 4-2.
No
4-5
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