![background image](http://html.mh-extra.com/html/samsung/sgh-x480/sgh-x480_service-manual_1191253031.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
7-7
6. Speaker Part
Is the terminal of Speaker
O.K.?
There is no sound from Speaker
No
Replace the Speaker
The pin#4 of
U402 is
"Low"
Check U402
The pin#4 of
U402 is
"High"
Check U402
Are there any signals
at the pin#5 and
pin#7 of U402?
END
Yes
Yes
No
The type of sound
from the Speaker is
Melody
Yes
No
No
No
Yes
Yes
Yes
Are there any signals
at the pin#2 and
pin#10 of U402?
No
Check U100