Samsung YP-P3 Service Manual page 22

4-1-3 If the touch pad doesn't work
No
Samsung Electronics
If the touch pad doesn't work
After checking that it is
set to the hold status, cancel the hold
status and check.
No
Connect the touch pad
connector correctly and then check
touch pad operation.
No
Check if the
touch pad input power is normal.
Check that IC808 pin 1 is 3.2V.
Yes
Check if the touch pad works
correctly after replacement.
No
N.G.
(detailed inspection)
Yes
Yes
 Refer to wave pattern
image of Fig. 4-4.
Yes
Troubleshooting
Complete
4-7