HP Netserver L Server series - Manual (Page 50)

Chapter 6 Troubleshooting
9. Check that the voltage regulator module (VRM) is fully seated in the upper
VRM socket on the system board. If two CPU modules are installed, check
that both VRMs are fully seated. See the Technical Reference Label inside
the top cover for the location of the VRM(s).
After Installing an Accessory
1. Turn off the display, the computer, and any external devices.
2. Unplug all cables from the power outlet.
3. Remove the front bezel, top cover, and side cover. Raise the system board
if you need access to Slots 5 and 6 on the backplane.
4. Check the following:
0 If you have installed an accessory board, check that the board is
firmly seated in its slot and that any switches orjumpers on the
accessory board are properly set. (Refer to the manuals that came with
the board.)
0 Check that the CPU, terminator board, and VRM are seated properly in
their correct positions, as listed above in "General Checks."
0 Check that all DIMMs are HP-supplied and are seated properly. The
boot screen provides information on the installed DIMMs.
0 Check all internal cabling and connections.
0 If you have changed any switches on the system board, check that they
are properly set.
5. Lower the system board if it was raised and lower the retaining latches
simultaneously. Replace the covers and front bezel, and connect all cables.
6. Turn on the display and HP NetServer.
7. If the HP NetServer still does not work:
0 Repeat steps 1, 2, and 3 of this section.
Remove all accessories, except the primary boot hard disk drive.
Replace the covers and connect all cables.
Turn on the display and the HP NetServer.
If the HP NetServer now works, replace the boards and accessories one
at a time to determine which one is causing the problem.
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