5-14
Flow Chart of Troubleshooting and Circuit Diagrams
5-8 Alert Tone
Abnormal Alert tone
ALERT by Test S/W
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 3.0V?
Check the circuit related to Q103
END
Check the circuit related to U105
Yes
No
Yes
Yes
No
No
Buzzer is ok?
Change the Buzzer
Yes
No