IBM 847661U Hardware Maintenance Manual - Page 161

Microprocessor speed switches settings

Page 161 highlights

Microprocessor speed switches settings: When you replace a microprocessor with one that has a different speed8, you might have to change the switch settings on the system board. Before you begin: Read "Safety information" on page 212 Power-off the server and all other connected devices. Disconnect all external cables attached to the server; then, remove the server cover. Locate the Flash Utility Diskette that you created in "Remote administration" on page 34. Note If you have not already done so, go to http://www.ibm.com/support/ on the World Wide Web and download the appropriate flash update program. Review the applicable README files, and use this information to create a Flash Utility Diskette. Perform the POST/BIOS (flash) update procedure (see "Remote administration" on page 34 for additional information). 1. Locate the configuration switches (also known as rocker switches) on the system board. For more information, refer to the label inside the server, or see "System board illustration" on page 142. 2. To set the appropriate microprocessor speed, set switches 1 to 4 as shown in the following illustration. It might be helpful to use the end of a small screwdriver to set the switch. Note Switches 5 to 8 are not used for microprocessor speed settings. Attention The following illustration is for reference only. Before you change the settings for switches 1 through 4, be sure that you check the orientation of the server system board to correctly identify the switch number locations. If you change the settings for the wrong switches, you might seriously damage server components or options. 8 MHz denotes internal clock speed of the microprocessor only; other factors also affect application performance. IBM Netfinity 3000 - Type 8476 153

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Microprocessor speed switches settings:
When you replace a microprocessor with one that has a
different speed
8
, you might have to change the switch
settings on the system board.
Before you begin:
±
Read “Safety information” on page
212
±
Power-off the server and all other connected
devices.
±
Disconnect all external cables attached to the
server; then, remove the server cover.
±
Locate the
Flash Utility Diskette
that you created
in “Remote administration” on page
34.
Note
If you have not already done so, go to
http://www.ibm.com/support/ on the World Wide Web
and download the appropriate flash update program.
Review the applicable README files, and use this
information to create a
Flash Utility Diskette
. Perform
the POST/BIOS (flash) update procedure (see
“Remote administration” on page
34 for additional
information).
1.
Locate the configuration switches (also known as
rocker switches) on the system board.
For more
information, refer to the label inside the server, or see
“System board illustration” on page
142.
2.
To set the appropriate microprocessor speed, set
switches 1 to 4 as shown in the following illustration.
It might be helpful to use the end of a small
screwdriver to set the switch.
Note
Switches 5 to 8 are not used for microprocessor
speed settings.
Attention
The following illustration is for reference only.
Before you change the settings for switches 1
through 4, be sure that you check the orientation
of the server system board to correctly identify
the switch number locations.
If you change the
settings for the wrong switches, you might
seriously damage server components or options.
8
MHz denotes internal clock speed of the microprocessor only;
other factors also affect application performance.
IBM Netfinity 3000 - Type 8476
153