Power Supply - HP rp5800 Maintenance And Service Manual

To install a new processor:
1. Place the processor in its socket and close the retainer.
2. Secure the locking lever. If reusing the existing heatsink, go to step 3. If using a new heatsink,
go to step 6.
3. If reusing the existing heatsink, clean the bottom of the heatsink with the alcohol pad provided in
the spares kit.
CAUTION:
bottom of the heatsink with an alcohol pad supplied in the spares kit. After the alcohol has
evaporated, apply thermal grease to the top of the processor from the syringe supplied in the
spares kit.
4. Apply the thermal grease provided in the spares kit to the top of the processor and install the
heatsink atop the processor.
5. Go to step 7.
6. If using a new heatsink, remove the protective covering from the bottom of the heatsink and
place it in position atop the processor.
7. Secure the heatsink to the system board and system board tray with the four captive screws and
attach the heatsink control cable to the system board.
CAUTION:
X) to evenly seat the heatsink on the processor. This is especially important as the pins on the
socket are very fragile and any damage to them may require replacing the system board.
NOTE: After installing a new processor onto the system board, always update the system ROM to
ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can
be found on the Web at: http://h18000.www1.hp.com/support/files.

Power Supply

Description
Power supply, 90% efficient
WARNING!
active AC outlet. To avoid possible personal injury and damage to the equipment the power cord
should be disconnected from the computer and/or the AC outlet before opening the computer.
1. Prepare the computer for disassembly
2. Remove the access panel
3. Rotate the optical drive cage to its upright position.
4. Disconnect the power cables from all of the drives.
5. Rotate the power supply to its upright position.
Before reinstalling the heatsink you must clean the top of the processor and the
Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an
Voltage is always present on the system board when the computer is plugged into an
Access Panel on page
(Preparation for Disassembly on page
42).
Spare part number
659246-001
41).
Power Supply 93