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Flow Chart of Troubleshooting and Circuit Diagram
5-7 SGH-A300 Key Data Input
Check initial operation Y Check the connection between CN602 and Keypad. Y Check the pin 1, 3, 4, of CN602 is �High� Y
N
Check the M46(U201)
When one of the keys is pushed, one of pin [5:12] of CN602 is �High�
N
Replace the key PCB
Y END
SAMSUNG Proprietary-Contents may change without notice 5-7
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