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Flow Chart of Troubleshooting
9-19
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9-5. KEY Working
YES
NO
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
PRESS KEY
POWER
KEY NG?
Volume
key NG?
Camera
key NG?
OJ key NG?
Qwerty
Key NG?
Key FPCB
Breakdown?
OJ key
Breakdown?
Key FPCB
Breakdown?
Key FPCB
Breakdown?
SW600
Breakdown?
Check SLC601 &
Neighboring Circuit
Change SW600
Check Soldering
PAD & Neighboring
Circuit
Change key FPCB
Check Soldering
PAD & Neighboring
Circuit
Change key FPCB
Check SLC601 &
Neighboring Circuit
Change OJ key
Check SLC602 &
Neighboring Circuit
Change key FPCB