Replacing Or Adding Processors And Vrms; Installing A Processor - NEC Express5800 320La User Manual

Replacing or Adding Processors and VRMs

The following subsections provide the procedures for removing and installing
the Pentium III processor. Use these procedures when replacing or adding
processors to your system. When adding a second processor to a CPU module
an identical processor must be added to the other CPU module to provide total
system redundancy and mirroring. Each processor includes a thermal cool sheet
(heat radiation sheet) and a heat sink. The processors are also supported by one
or more voltage regulator modules (VRMs) depending on the number of
installed processors.
Each processor installs in a processor socket on a CPU board located in the CPU
module. Each processor socket must contain either a processor or a terminator
board (if there are less than two processors installed.) The VRM modules are
installed in VRM sockets adjacent to the processors.
Note:
CPU board. All installed processors must be matched for
speed. If replacing a processor, the replacement processor
must match the speed of all installed processors. If
upgrading a processor, all processors must be upgraded to
match.
Electrostatic discharge (ESD) can damage components;
place them on an antistatic surface. Update the CPU board
using an antistatic wrist strap attached to chassis ground.
If the system was running, any processor and heat sink
installed is hot. To avoid the possibility of a burn, let the
components cool for 10 minutes before continuing with these
procedures.

Installing a Processor

1. Remove the appropriate CPU module from the server chassis. See Removing
a CPU Module earlier in this chapter.
2. Remove the two screws from the rear of the CPU module securing its top
cover. See Figure 4-10.
4-14 CRU Replacement and Server Upgrades
Your system may have up to two processors on a
! CAUTION
! WARNING