Acer Aspire 5820T Service Guide - Page 161

TouchPad Failure If the TouchPad doesn't work, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs: Start OK Check M/B T/P FFC OK Check TouchPad Re-assemble the NG T/P FFC to M/B OK Swap/Reassemble NG the T/P board or T/P FFC Swap M/B Chapter 4 151