Samsung SGH D900i Service Manual - Page 50

Key Data Input

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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 Flow Chart of Troubleshooting No Check the Dome sheet & Key Pad No Replace the PBA 9-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization

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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
Check Initial Operation
Yes
When one of the keys is
pushed,
is it displayed on LCD?
Check the Dome sheet & Key Pad
No
Yes
When one of the keys is
pushed,
KBIO signal is OK?
Replace the PBA
No
Yes
END