5-13
Flow chart of trouble shooting
5-8 Alert tone
Abnormal Alert tone
ALERT by Test S/W
Is there alert wave form on the
R539 during alert tone test?
Is there alert wave form on the
Q500 pin 3 during alert tone test?
U100 pin 3 3.3V?
Check the circuit related to Q500
END
Check the circuit related to U100
Yes
No
Yes
Yes
No
No
Buzzer is ok?
Change the Buzzer
Yes
No