User Guide

Table Of Contents

6-5 SAMSUNG Proprietary-Contents may change without notice

6-1-5 Abnormal Key tone

Press and key

Waveform output

from U102 pin 14, 15, 16

Waveform output

from U102 pin 2, 3?

Waveform applied to

SPK(+), (-)?

normal key tone?

Check SPK.

Replace if required.

Check U102, R250 and C108, FPC.

Replace if required.

Check U102, pin 2, 3 and its

neighboring circuits.

Replace if required.

Check U102 pin 14, 15, 16.

Replace if required.

END

Yes