4-4
Samsung Electronics
Troubleshooting
4-1-2 No Sound
Symptom
No output at earphones
Major Checklist
Check if the earphones are normal. / Check the cold solder on the earphones jack.
1
Check if 3.1V is output from C714.
2
Check if 2.8V is output from C705.
3
Check if 1.8V is output from L704.
Does the YEPP
Logo Song play?
Are the earphones
normal?
Do R/L-CHs output
normally?
Are there skips and
noises?
Are the skips and
noises even when playing
another file?
Does the
same symptom persist
even after upgrading the
firmware to the latest
version?
Yes
No
Yes
Yes
Yes
Yes
Yes
Does the same
symptom persist even
after replacing the
earphones?
Does it play after
supplementing the solder
on the jack?
No
No
No
No
Yes
Yes
No
Power Defective
Check if IC703 is shorted.
Check if IC704 is shorted.
Replace the earphones
No
Yes
Yes
No
No Sound
Refer to wave pattern
image of Table 4-2.
1
/
2
/
3
Is audio codec voltage
a normally? C714: 3.1V,
C705: 2.8V, L704: 1.8V
Check
Replace the board
(needs thorough examination).
Summary of Contents for YP-P2
Page 41: ...5 7 Samsung Electronics MEMO...
