Specifications

SAMSUNG Proprietary-Contents may change without notice

8-5

Trouble Shooting

8-1-5 Abnormal Key tone

Abnormal keytone.

CLK waveform

outputted from U908

pin 189?

CLK waveform

applied from U902

pin 2~3?

CLK waveform applied

to C907 R932?

Normal key tone?

Replace the Keypad assembly.

Check C907, R932

Replace U902

Check U908 pin 189. Replace if required.

END

YES