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To install an additional microprocessor:
Attention: When you handle Electrostatic Discharge-Sensitive devices (ESD),
take precautions to avoid damage from static electricity. For details on handling
these devices, refer to the following Web site and search for ESD:
http://www.ibm.com
Note: If you are replacing a failed microprocessor, verify that you have selected the
correct microprocessor for replacement. To do this, check the Diagnostic
panel that is located under the top cover to see which LED is on.
1. Turn off the server and disconnect all power cords and external cables; then,
remove the top cover (see “Removing the server top cover and bezel” on
page 53).
2. Determine the slot where the microprocessor is to be installed.
3. If you have installed microprocessors in slots 1 through 3 and you are now
installing a microprocessor in slot 4, remove the terminator card from the
microprocessor connector. Store the terminator card in a safe place in the
static-protective package that your new microprocessor comes in; you will need
to install it again if you ever remove the microprocessor.
4. Install the microprocessor:
a. Touch the static-protective package containing the new microprocessor to
any unpainted metal surface on the server; then, remove the microprocessor
from the package.
b. Hold the microprocessor by the open latches, and center the microprocessor
over the microprocessor connector.
Attention: Make sure that the microprocessor is oriented and aligned
correctly before you try to close the latches.
c. Carefully close the latches to seat the microprocessor in the connector.
5. If you replace the microprocessors in the server with microprocessors of a
different speed, set the microprocessor-core-frequency-selection jumper block
as described in Table 12 To ensure that the server maintains the correct
microprocessor bus-to-core ratio, you must set the following microprocessor
speed (core-frequency-selection) jumpers: J13, J27, J28, and J29. The jumpers
on this block are in the following order, from top to bottom: J13, J27, J28, and
J29. For locations of these jumpers, see “System board jumpers” on page 44
Note: See “Changing jumper positions” on page 69 for additional information on
setting jumpers.
Table 12. Microprocessor-core-frequency-selection jumper block settings
J13 J27 J28 J29 Bus Ratio
Core Frequency
(MHz)
H L L H 7:1 700/100
H L H L 8:1 800/100
6. If you have other options to install or remove, do so now; otherwise, go to
“Installing the server top cover and bezel” on page 74
68 IBM xSeries 350 Type 8682: Hardware Maintenance Manual