5-10. Alert Tone
Abnormal Alert tone
Y
Y
N
Y
Is there
alert wave signal on the
Q508 during alert tone
test?
Resolder or replace R508
N
Y
Is there
alert wave signal on the
Q502 pin3 during alert
tone test?
Check the circuit related to Q502
N
Y
Check the C506
≥
3.3V
Resolder D502 and C506
N
Y
Buzzer is ok?
Change the Buzzer
END
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5-10
SGH-Q200 Flow Chart of Troubleshooting and Circuit Diagrams
Alert tone on by pushing the key
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