1080 Keyboard Unit

•  Battery Pack
•  Top Cover

1.  There are two keyboard latches on each side of the computer frame.  Slide the keyboard as shown in step 2 to release  the keyboard from those latches, them remove the keyboard.  (Small arrows on the both sides of the keyboard  show the locations of the latches.)
2.  The keyboard has three cables, be careful not to damage  the cables when you open the keyboard and to remove them.

•  Check that the three keyboard cables are clean, and  inserted straight and fully into the connectors.  Slide both ends of each connector latch at the same time  to make sure that each cable is correctly inserted.
•  Go to 'Keyboard / Auxiliary Input Device Checkout' and test all keys before returning the  computer to the customer.