SAMSUNG Proprietary-Contents may change without notice
6-5
Troubleshooting
6-1-5 Abnormal Key tone
Abnormal Keytone
CLK Waveform output
from U202 pin 17?
CLK waveform applied to
CON J1 pin 22?
Is the buzzer
connection correct?
Check the buzzer and
replace if required
Connect the buzzer correcty
Check Q200, Q201, R213, D202.
Replace if required.
Check U202 pin 17.
Replace if required.
Yes
Yes
Yes
No
No
No