Touchpad Failure; Internal Speaker Failure - Acer eMachines E720 Series Service Manual

TouchPad Failure

If the TouchPad doesn't work, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRUs:

Internal Speaker Failure

If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace
a non-defective FRUs:
144 Chapter 4