IBM 84875MU, Руководство пользователя

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System-board switches and jumpers
The following illustration shows the location of the switches and jumper blocks on
the system board.
Boot block
jumper (JP1)
CMOS jumper (JP2)
Any jumper blocks on the system board that are not shown in the illustration are
reserved. For information about BIOS code recovery or the boot block recovery
jumper, see “Recovering from a POST/BIOS update failure” on page 20.
System board removal
Notes:
1. Read “Installation guidelines” on page 23, “Handling static-sensitive devices” on
page 24, and “Safety information” on page 107.
2. When replacing the system board, you must either update the system with the
latest firmware or restore the pre-existing firmware that the customer provides
on a diskette or CD image.
Complete the following steps to remove the system board:
1. Turn off the server and attached devices; then, disconnect all power cords and
external cables.
2. Turn the server on its side so that it is laying flat, with the cover facing up.
3. Remove the cover and support bracket (see“Removing the side cover” on page
26 and “Removing and installing the support bracket” on page 28).
4. Disconnect all cables on the system board.
Attention: Do not place any strain on the hard disk drive cables; if necessary,
disconnect these cables from the hard disk drive backplane before pivoting the
drive cage.
5. Pivot the drive cage up.
Note: The drive cage will lock in the pivoted position. To lower the drive cage,
press in on the blue flap on the side of the drive cage.
Chapter 6. Field replaceable units
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