Key Data Input - Samsung SGH-X640 Service Manual

F low Chart of Troubleshooting

7. Key Data Input

C heck Initial O peration
Y es
N o
W hen one of the keys is
C heck the D om e sheet &K ey Pad
pushed,
is it displayed on L C D ?
Y es
N o
W hen one of the keys is
R eplace the PBA
pushed,
K B IOsignal is O K ?
Y es
E N D
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