Compaq AlphaServer ES40 Informations techniques Page 346

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B-10 Compaq AlphaServer ES40 Service Guide
B.5
Setting Jumpers
Review the material in the previous sections of this chapter before
setting any system jumpers. Before setting jumpers, shut down the
system and remove the power cord from each power supply.
CAUTION: Static electricity can damage integrated circuits. Always use a
grounded wrist strap (29-26246) and grounded work surface when
working with internal parts of a computer system.
Remove jewelry before working on internal parts of the system.
Setting Jumpers
1.
Shut down the operating system.
2.
Shut down power on all external options connected to the system.
3.
Turn off power to the system.
4.
Unplug the power cord from each power supply.
5.
Remove enclosure panels and chassis covers to gain access to the system
motherboard or PCI board.
If you are setting RMC jumpers, remove CPU 1 to gain access to the
jumpers.
If you are setting TIG/SROM jumpers, remove MMB 1 to gain access to
the jumpers.
If you are setting PCI jumpers, you typically do not need to remove any
PCI cards. However, if you have a full-length card in slot 10, remove it.
6.
Locate the jumper you need to set. Refer to the illustrations in this chapter.
Set the jumpers as needed.
7.
Reinstall any modules you removed.
8.
Reinstall the chassis covers and enclosure panels.
Plug the power cords into the supplies.
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