Removing An Expander Board - Sun Microsystems Sun Fire E25K Service Manual

Note – You might need to power off more than one domain if the expander is part
of a split-slot domain.
12.2.3

Removing an Expander Board

Caution – Be sure you are properly grounded before you begin the hardware
removal and installation. There are four ground points on the system cabinet, two at
the front top left and top right, and two at the rear top left and top right.
Caution – The expander board and mounting system (carrier plate) are used as the
electrical interface and mounting mechanism for the slot 0 and slot 1 modules or
filler panels. Therefore, prior to removal of the expander board, the slot 0 and slot 1
modules must be deconfigured, powered off, and removed. The references to those
procedures are included in the following steps:
1. Open the Sun Fire E25K/E20K system cabinet access doors.
Caution – Before removing a board from the system, the green activation LED must
be off and the amber or blue removal OK LED must be on. See
"Powering Off an Expander Board" on page
2. Remove any slot 0 boards, slot 1 boards, or filler panels following the appropriate
directions for each board type as outlined in later sections of this document.
Caution – Never remove the carrier plate while it contains slot 0 or slot 1 boards as
this will cause severe damage to the connector system.
3. Using two (2) 0.5 in. (13 mm) nut drivers, simultaneously loosen the carrier plate
captive ejector screws until they are fully disengaged.
4. Remove the carrier plate and place on an ESD-protected surface.
5. Using a Phillips No. 2 screwdriver, remove the two (2) M3x8 panhead screws on
the top expander cover that are not common to the rest of the slotted holes.
6. Remove the one (1) M3x8 flathead screw and remove the cover plate air dam
bracket located near the center of the assembly.
Section 12.2.2,
12-4.
Chapter 12 System Expander Board Set 12-5