System Board Jumpers; Before You Begin - IBM eServer 200 xSeries User Reference Manual

System board jumpers

The following illustration identifies the jumpers on the system board.
Boot block jumper
For typical operation of the system, a jumper is installed on pins 2 and 3 of the boot
block jumper.
Note: Do not remove the boot block jumper (JROM1) unless instructed to do so by
CMOS jumper
For typical operation of the system, a jumper is installed on pins 1 and 2 of the
complementary metal oxide semiconductor (CMOS) jumper. See "Clearing CMOS" on
page 78 for information about the CMOS jumper.

Before you begin

Before you begin to install options in your server, read the following information:
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26
IBM xSeries 200: User's Reference
an IBM authorized service representative.
Become familiar with the handling guidelines specified under "Handling static-
sensitive devices" on page 27, and the safety statements in "Safety information"
on page 28. These guidelines will help you work safely with your server or
options.
The blue color on components and labels identifies touch points where a
component can be gripped, a latch moved, and so on.
Make sure that you have an adequate number of properly grounded electrical
outlets for your server, monitor, and any other options that you intend to install.
When you need to access the inside of the server to install options, you might find
it easier to lay the server on its side. If you do so, make sure the stabilizing feet
are in the horizontal position. Otherwise, the feet might break off because of the
weight of the server. For complete details, see "Moving the stabilizing feet" on
page 32.
Back up all important data before you make changes to hard disk drives.
Have a small, flat-blade screwdriver available.
1
2
3
CMOS jumper
(JBAT1)
3
2
1
Boot block jumper
(JROM1)