Alert Tone - Samsung SGH-Q105 Service Manual

SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram

5-10. Alert Tone

Abnormal Alert tone
Alert tone on by pushing the key
#0289#
Is there
alert wave signal on the
R508 during alert tone
test?
Is there
alert wave signal on the
Q502 pin3 during alert
tone test?
Check the C506 3.3V
Buzzer is ok?
END
Y
Y
Y
Y
Y
Y
SAMSUNG Proprietary-Contents may change without notice
Resolder or replace R508
N
Check the circuit related to Q502
N
Resolder D502 and C506
N
Change the Buzzer
N
5-10