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MX8550
23, 24 of CON201 of key PCB. Is there any pulse when
23, 24 of CON102 of FPCB. Is there any pulse when you
33, 34 of CON101 of FPCB.Is there any pulse when you
33, 34 of CON600 of Main B/D. Is there any pulse when
LG Electronics Inc.
Checking Flow #3
Checking Flow #3
3
Check the signal at pin 22,
you press touch key ?
NO
Check the signal at pin 22,
press touch key ?
NO
Check the signal at pin 32,
press touch key ?
NO
Check the signal at pin 32,
you press touch key ?
NO
Replace Main B/D
Replace key PCB
YES
Resolder CON201 of key
PCB
YES
Replace FPCB
YES
Resolder CON101 of FPCB
YES
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