Owner manual

Problem
l Error message indicates a microprocessor problem
l Error message indicates a microprocessor board problem
l Front-panel status LCD indicates a problem with microprocessors, VRMs, or the microprocessor board
l A heat sink is not installed for each microprocessor
Action
1. Observe the precautions in "Safety First—For You and Your System."
2. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
3. Remove the microprocessor tray (see "Removing the Microprocessor Tray").
4. Ensure that VRMs are installed for each microprocessor and reseat the VRMs.
5. Replace the microprocessor tray (see "Replacing the Microprocessor Tray").
6. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
7. Run the Quick Tests in the system diagnostics.
If the problem persists, go to step 8.
8. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
9. Remove the microprocessor tray (see "Removing the Microprocessor Tray").
10. Remove all microprocessors and VRMs except CPU1 and VRM1 (see "Adding or Replacing a Microprocessor").
If there is only one microprocessor installed, see "Getting Help."
11. Replace the microprocessor tray (see "Replacing the Microprocessor Tray").
12. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
13. Run the Quick Tests in the system diagnostics.
If the tests complete successfully, go to step 14.
14. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
15. Remove the microprocessor tray (see "Removing the Microprocessor Tray").
16. Reinstall one of the microprocessors and VRMs that you removed in step 10 (see "Adding or Replacing a Microprocessor").
17. Repeatsteps11through16foreachmicroprocessorandVRMremovedinstep10.
If the problem persists, see "Getting Help."
Troubleshooting the I/O Riser Card
Problem
l Error message indicates an I/O riser card problem (mouse, keyboard, serial port, parallel port, NIC, video, SCSI, USB, BIOS, or BMC problem)
Action
1. Observe the precautions in "Safety First—For You and Your System."
2. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
3. Remove the back cover (see "Removing the Back Cover").
4. Disconnect all cables from the I/O riser card.
5. Reseat the I/O riser card (see "Replacing the I/O Riser Card").
6. Reconnect all cables to the I/O riser card.
7. Replace the back cover (see "Replacing the Back Cover").
8. Reconnect the system to its electrical outlet, and turn on the system.
NOTICE: If a microprocessor socket does not have a microprocessor installed, a heat sink blank must be installed for that socket.
NOTICE: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
NOTICE: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.