Service Procedures
Service Procedures
Digital PRIORIS XL Server
Digital PRIORIS XL Server
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MCS Logistics Engineering - Nijmegen
MCS Logistics Engineering - Nijmegen
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Upgrading the 590 CPU module
The CPU module might be equipped with a 90MHz Pentium
processor installed in a CPU ZIF socket
(socket 5 type). A second CPU ZIF socket is available for future Pentium OverDrive processors. The
Pentium processor(s) and related high-performance caching circuitry are located on a CPU module
connected to the main logic board inside the computer. Features of the CPU module include:
NOTE
CPU upgrades are not available for dual processor CPU modules.
If the computer has a dual processor CPU module, both CPU ZIF sockets will be
occupied by a Pentium processor
1) To install a higher performance CPU:
2) Remove the CPU module.
3) Place the CPU module on an anti-static surface.
4) Lift up on the release lever for the empty ZIF socket..
5) Install the new CPU and return the release lever to its original position.
6) Make sure pin 1 on the CPU is aligned with pin 1 on the ZIF socket (A, Figure 3 - 25). Pin 1 is
located at the notched corner of the CPU (You can see the notched corner by looking at the CPU from
the pin side).
7) Also, the CPU is keyed so it cannot be installed incorrectly.
8) Set any appropriate jumpers.
Refer to the following section titled “590 CPU Jumper Settings”
.
9) Install and secure the CPU module to the main logic board.
Figure 3 - 25 Installing a New CPU
