![background image](http://html.mh-extra.com/html/samsung/sgh-z620/sgh-z620_service-manual_1191359061.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
9-
12
This Document can not be used without Samsung's authorization
9-1-6. Speaker Part
There is no sound from speaker
The type of sound from
the Speaker is Melody
Replace the Speaker
The pin #7,32 of
U301
≒
2.8V
Check the U304
Are there any signal
at the pin #29 of U300 ?
END
NO
NO
YES
The terminal of Speaker is
OK
There is signal
@ U303 pin #2
YES
NO
There is signal
@ U304 R309
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
Check the U302
Check the U304
Check the UCP100
Check the U301
Check the UCP100
Speakerphone Mode?
Receiver part
There is signal
@ U304 C309
NO