![background image](http://html.mh-extra.com/html/samsung/sgh-e250d/sgh-e250d_service-manual_1190525038.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-13
9-7. Key Data Input
When one of the keys is
pushed,
is it displayed on LCD?
Check the Dome sheet & Key Pad
END
No
Yes
Yes
Check Initial Operation
When one of the keys is
pushed,
KBIO signal is OK?
Replace the PBA
No
Yes
Summary of Contents for SGH-E250D
Page 23: ...Block Diagrams 7 2 ...