LG PRADA KE850 - Touch Pad Trouble

5. Trouble shooting
- 97 -
5.12 Touch pad trouble
Check Points
-FPCB pad Solder
-FPCB Crack
-Contorl IC working
2V85_IO
2
3
4
5
CN102
1
SDA
SCL
TP_ATTN
This fault depend on
Touch-pad mainly.
Almost of all case,
Replace front touch panel.
START
FPCB PAD (CN102)Solder
check OK?
FPCB No Crack?
Assemble
Resolder CN102
Replace FPCB
Yes
No
No
Check Touch Sensitivity
(If not replace front touch
panel)