See Section 3.15 “How to Set the Serial PortJumpers” on page 122 and Section
3.16 “How to Set the Flash PROM Jumpers”on page 124.
3. Position the replacement main logic board in the chassis.
Align the notches on the sides of the board with the corresponding tabson the
chassis.
4. Slide the main logic board toward the back of the system.
120 Sun Enterprise 220R Server Service Manual January 2000, Revision A