Key Data Input - Samsung SGH-ZV50 Service Manual

Flow Chart of Troubleshooting

9-7. Key Data Input

Check Initial Operation
Yes
No
When one of the keys is
Check the Dome sheet & Key Pad
pushed,
is it displayed on LCD?
Yes
No
When one of the keys is
Replace the PBA
pushed,
KBIO signal is OK?
Yes
END
9-13
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