Table of Contents
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5-8 Alert Tone
Abnormal Alert tone
Is there alert wave form on the
R305 during alert tone test?
Is there alert wave form on the
Q300 pin 3 during alert tone test?
U470 pin 5
5-14
Yes
Yes
3.3V?
Yes
Buzzer is ok?
Yes
END
No
ALERT by Test S/W
No
Check the circuit related to Q300
No
Check the circuit related to U470
No
Change the Buzzer
Flow Chart of Troubleshooting and Circuit Diagrams
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