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FlowChartofTroubleshooting
7-19
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7-4. KEY Working
Press KEY
NG
Volume key ,
Voice Recoding key,
3X4 key, Camera key
NG?
Application key
or Navigation key
NG?
Change
Side Key FPCB
NO
YES
NO
Break a
Side Key FPCB
YES
NO
Check CN804,ZD802,ZD805 &
KEY Metrix connection circuits
Break a
LCD Sub B'd or
Slide FPCB
YES
Change
LCD Sub B'd or
Slide FPCB
YES
Check ZD701, ZD704 &
KEY Metrix connection circuits
NO
Power key
or Lock key
NG?
YES
Break a
SW601
Change
SW601
YES
Check SW601
& neighboring circuits
NO