LG GW520 - Slide Key Sense Trouble

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Trouble shooting
GW520 service manual
5.7 Slide Key sense Trouble
Start
Change the Key PCB
Change the key pcb
And check again.
Work well?
Change the dome sheet
Work well?
Check soldering of CN801
Change the FPCB, work well?
Change the FPCB connector
soldering or change
Follow the Qwerty key
trouble shooting
END
END
YES
NO
YES
YES
YES
NO
NO
Start
Change the Key PCB
Change the key pcb
And check again.
Work well?
Change the dome sheet
Work well?
Check soldering of CN801
Change the FPCB, work well?
Change the FPCB connector
soldering or change
Follow the Qwerty key
trouble shooting
END
END
YES
NO
YES
YES
YES
NO
NO
CN801CN801
SEND MULTI END
VBAT
SEND
VA80 6
varistor
ENDMULTI
END_KEY
KEY_COL6
KEY_COL5
KEY_ROW5