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5-8 Alert Tone
Abnormal Alert tone
Is there alert wave form on the
R110 during alert tone test?
Is there alert wave form on the
Q102 pin 3 during alert tone test?
U116 pin 5
5-13
Yes
Yes
3.3V?
Yes
Buzzer is ok?
Yes
END
No
ALERT by Test S/W
No
Check the circuit related to Q102
No
Check the circuit related to U116
No
Change the Buzzer
Flow chart of trouble shooting and Circuit Diagram
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