Flow Chart of Troubleshooting

9-7. Key Data Input

Check Initial Operation

Yes

When one of the keys is

pushed,

is it displayed on LCD?

Yes

When one of the keys is pushed,

KBIO signal is OK?

Yes

END

No

No

Check the Dome sheet & Key Pad

Replace the Key PBA

9-18

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Page 46
Image 46
Sharp SGH-F250 manual Key Data Input