IBM IntelliStation A Pro 6224, Руководство по техническому обслуживанию и ремонту

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System board removal
Notes:
1. Read “Installation guidelines” on page 25, “Handling static-sensitive devices” on
page 25, and Appendix B, “Safety information,” on page 117.
2. When replacing the system board, you must either update the system with the
latest firmware or restore the pre-existing firmware that the customer provides
on a diskette or CD image.
Complete the following steps to remove the system board:
1. Turn off the computer and attached devices; then, disconnect all power cords
and external cables.
2. Turn the computer on its side so that it is lying flat, with the cover facing up.
3. Remove the cover and support bracket (see “Replacing the side cover” on
page 27 and “Replacing the support bracket” on page 29).
4. Disconnect all cables on the system board.
5. If there is a drive installed in bay 3, slide it out through the front far enough so
that it will not impede the removal of the system board.
6. Pivot the drive cage up.
Note: The drive cage will lock in the pivoted position. To lower the drive cage,
press in on the blue flap on the side of the drive cage.
7. Remove any of the following components and put them in a safe,
static-protective place:
v
Adapters
v Air baffle, if present
v
Microprocessor board, if present
Note: Before removing the microprocessor board, remove microprocessor 2
and fan sink 2 (see “Microprocessor and fan sink” on page 72), as well as
DIMMs 4 through 8.
v
Microprocessor and fan-sink assembly
Important:
a. Fan sink 1 and fan sink 2 are not interchangeable. Installing fan sink 2
on microprocessor 1 will impede movement of the drive cage.
b. Be careful when handling the adhesive material on the microprocessor.
If the adhesive material on the microprocessor will be reused, do not
contaminate it. If replacement adhesive material is provided with the
replacement part, be sure to remove all traces of existing adhesive
material from the microprocessor before applying the new adhesive
material.
v
DIMMs (see “Replacing memory modules” on page 45).
Notes:
a. If any installed items impede your ability to easily access the system board,
remove them before proceeding.
b. The illustrations in this document might differ slightly from your hardware.
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IntelliStation A Pro Type 6224: Hardware Maintenance Manual and Troubleshooting Guide