LG FA162 - Touch Pad Check

3-8
ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART
3. TOUCH PAD CHECK
Touch pad check
OK
OK
OK
Replace the related part.
Check IC104 output Pin3 : 3.3 V
Check IC104 input Pin2 : 3.7 VA
IF it is right --> OK
IF it is NO --> Refer to SMPS
Troubleshooting.
NO
NO
Check
resistance output of line
CLK : R358
DATA : R351
PN302 Pin5 3.3 V.
Check
IC304 Pin1: SDA, Pin2: SCL
IC101 Pin27: DATA, Pin28 : CLK
IC100 Pin5: CLK, Pin23: DATA
Check IC304
Pin24 3.3 V.
NO
NO
YES
YES
YES
YES