Samsung GT-i8000 Service Manual page 42

Flow Chart of Troubleshooting
9-5. KEY Working
Press Key
Volume Key
NG ?
No
Camera Key
NG ?
No
Hold key NG?
No
Power Key NG?
YES
END
Yes
Yes
Yes
Yes
Key FPCB Breakdown?
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Yes
Key FPCB
Breakdown?
Yes
Camera Key
FPCB
Breakdown?
Yes
Hold Key
Breakdown?
Yes
No
9-14
Change Key FPCB
Change Key FPCB
Change Hold Key
Change Key FPCB
Change LED