LG FAS166F - Touch Part Check

3-18
ELECTRICAL TROUBLESHOOTING GUIDE
7. TOUCH PART CHECK
YES
YES
YES
Touch part check
OK
Check the FFC cable
or refer to SMPS part.
Replace IC302.
Check TOUCH_IRQ signal(IC302 Pin11).
When you touch pad, it is ‘Low’.
When you non-touch pad, it’s ‘High’.
Check the connection,
or replace IC101.
NO
NO
NO
IC302 Pin28
voltage 3.3 V OK?
TOUCH_DAT,CLK signal OK?