IBM 8479 User Reference - Page 40

System board jumpers, Before you begin, outlets for your server, monitor

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System board jumpers The following illustration identifies the jumpers on the system board. 1 2 3 CMOS jumper (JBAT1) 3 2 1 Boot block jumper (JROM1) 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 an IBM authorized service representative. 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: • 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. 26 IBM xSeries 200: User's Reference

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26
IBM xSeries 200: User’s Reference
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
an IBM authorized service representative.
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:
•
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.
CMOS jumper
(JBAT1)
Boot block jumper
(JROM1)
1
1
2
2
3
3