Samsung SGH-E340 - Input and RF Troubleshooting

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Flow Chart of Troubleshooting
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7-13
7-7. 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