Built-In Keyboard Failure; Internal Keyboard Failure - Acer ASPIRE 553G Service Manual

Built-In Keyboard Failure

If the built-in Keyboard fails, perform the following actions one at a time to correct the problem. Do not replace
non-defective FRUs:
154
Start
Keyboard properly
connected?
Keyboard functioning?
Replace
mainboard
Disconnect and
No
reconnect
No
Replace Keyboard
Chapter 4