Screw
Safety cover
Alignment
tabs
3. Slide the safety cover toward the back of the server until it is secure.
4. Connect the hard disk drive backplane cables into the connector in front of the
safety cover.
5. Install the screw to secure the safety cover.
6. Install the SAS/SATA riser-card assembly (see“Installing the SAS/SATA RAID
riser-card assembly” on page 183).
7. Install the cover (see “Installing the cover” on page 174).
8. Slide the server into the rack.
9. Reconnect the power cords and any cables that you removed.
10. Turn on the peripheral devices and the server.
Removing a microprocessor and heat sink
Attention:
v Microprocessors are to be removed only by trained service technicians.
v Do not allow the thermal grease on the microprocessor and heat sink to come in
contact with anything. Contact with any surface can compromise the thermal
grease and the microprocessor socket.
v Dropping the microprocessor during installation or removal can damage the
contacts.
v Do not touch the microprocessor contacts; handle the microprocessor by the
edges only. Contaminants on the microprocessor contacts, such as oil from your
skin, can cause connection failures between the contacts and the socket.
To remove a microprocessor and heat sink, complete the following steps:
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 167.
2. Turn off the server and peripheral devices and disconnect all power cords;
then, remove the cover (see “Removing the cover” on page 174).
3. Disconnect any cables that impede access to the heat sink and
microprocessor.
244 IBM System x3550 M3 Types 4254 and 7944: Problem Determination and Service Guide
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