Lexmark MX421 User Manual page 253

Upgrading and migrating 253
Warning—Potential Damage: Controller board electronic components are easily damaged by static
electricity. Touch a metal surface on the printer before touching any controller board components or
connectors.
4
Unpack the hard disk.
5
Attach the hard disk to the controller board.
Warning—Potential Damage: Do not touch or press the center of the hard disk.