Alert Tone - Samsung SGH-R200 Service Manual

5-8 Alert Tone

Abnormal Alert tone
Is there alert wave form on the
R124 during alert tone test?
Is there alert wave form on the
Q103 pin 3 during alert tone test?
U105 pin 5
5-14
Yes
Yes
3.0V?
Yes
Buzzer is ok?
Yes
END
No
ALERT by Test S/W
No
Check the circuit related to Q103
No
Check the circuit related to U105
No
Change the Buzzer
Flow Chart of Troubleshooting and Circuit Diagrams