LG GT540 - Side Key Troubleshooting

4.16 Side Key Troubleshooting
4.16.1 Volume Key FPCB
Volume Key consists of Volume up and Volume down.
Figure. Volume key Troubleshooting Flow
Figure. Volume Key TEST Point
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4. Trouble Shooting
Key Press
TP1(VA606)is high?
TP2(VA602) & TP3(VA605)
are low?
Yes
START
Change the volume key FPCB
No
Change the Main board and Reset
4.16 Side Key Troubleshooting
4.16.1 Volume Key FPCB
Volume Key consists of Volume up and Volume down.
Figure. Volume key Troubleshooting Flow
Figure. Volume Key TEST Point
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