Compaq AP500 - Manual (Page 38)

3-18 Removal and Replacement Procedures
Removing the Backplane Board
The backplane board (also called the riser card) is attached to the I/O bracket assembly. The
backplane board contains the expansion slots described and shown in the “Expansion Boards”
section in this chapter.
To remove the backplane board:
1. Perform the service preparations shown on page 3-2, then lay the workstation on its side.
2. Remove the following components:
❏ Workstation feet
❏ Side access panel
❏ I/O bracket assembly
❏ Expansion boards (if installed)
❏ Graphics controller (if installed)
3. Remove the four screws that secure the backplane board to the I/O bracket assembly.
4. Slide out then remove the backplane board from the I/O bracket assembly.
Figure 3-14. Removing the backplane board
To replace the backplane board, reverse the above procedure.
IMPORTANT: Before replacing the I/O bracket assembly, read “Important Guidelines for
I/O Bracket Assembly Replacement” earlier in this chapter.
NOTE: When replacing the backplane board, align the top edge of the board with the slots in the
I/O bracket assembly.