IBM 6343, Hardware Maintenance Manual

Page: 69 / 230

© Copyright IBM Corp. 2001
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Chapter 5. FRU Removals
These removals are to be done by trained service technicians only.
Important: Before you install or remove any option, read “Safety information” on
page 185. These precautions and guidelines will help you work safely.
Replacing a microprocessor
To replace a microprocessor on any of the machine types, do the following:
1. Turn off the server and peripheral devices and disconnect all external cables and
power cords; then, remove the cover. See “Removing the cover” on page 26for the
small desktop, “Removing the cover” on page 37 for the desktop, and “Removing
the cover” on page 48 for the microtower.
2. Remove the system boards. See “System board” on page 68 for small
desktops,“System board” on page 65 for desktops, and“System board” on page 63
for microtowers.
3. Lossen the two captured screws that hold the fansink in place, and pivot them off
of the fansink notches.
4. To remove the fansinkfrom the processor, twist the fansink to break the seal
formed by the thermal grease and remove.
Note: If the thermal grease seal cannot be broken, you may want to start up the
syststem to heat the processor and loosen the thermal grease.
5. Pull out and lift up the processor socket lever arm upward to its maximum
vertical position to release the processor.
6. Lift the processor out of the system board.
Note: When you install the new processor, make sure to reinstall the fansink to
insure proper cooling.
Small desktop removals
Before performing any removals, unplug all power cords and disconnect all adapters.