Samsung SCH-211 Service Manual page 43

Troubleshooting
6-1-6 Abnormal Alert Tone
Abnormal keytone.
CLK waveform output
from U101 pin 49?
'Low' level on U101 pin 56?
CLK waveform applied
to J101 pin 24?
Is the buzzer
connection correct?
Check the buzzer
and replace if required.
6-6
N
Y
N
Y
N
Y
N
Y
Samsung Electronics - Contents may change without notice.
Check U101 pin 49.
Replace if required.
Check U101 pin 56. Replace if required.
Check Q120, Q113, R147, R148, D103,
and D105. Replace if required.
Connect the buzzer correctly.