System Event Log Troubleshooting Guide for EPSD
Platforms Based on Intel
®
Xeon
®
Processor E5 4600/2600/2400/1600/1400 Product Families
Power Subsystems
Revision 1.1 Intel order number G90620-002 29
Baseboard +12V
(BB +12.0V)
+12V is supplied by the power supplies.
+12V is used by SATA drives, Fans, and PCI cards. In addition it is used to generate various processor
voltages.
1. Ensure all cables are connected correctly.
2. Check connections on the fans and HDDs.
3. If the issue follows the component, swap it, otherwise, replace the board.
4. If the issue remains, replace the power supplies.
+5.0V is supplied by the power supplies for pedestal systems, and supplied by the main board on rack-
optimized systems.
+5.0V is used by the PCI slots.
1. Ensure all cables are connected correctly.
2. Reseat any PCI cards.
3. Try PCI cards in other PCI slots.
4. If the issue follows the card, swap it, otherwise, replace the main board.
5. If the issue remains, replace the power supplies.
Baseboard +3.3V
(BB +3.3V)
+3.3V is supplied by the power supplies for pedestal systems, and supplied by the main board on rack-
optimized systems.
+3.3V is used by the PCIe and PCI-X slots.
1. Ensure all cables are connected correctly.
2. Reseat any PCI cards.
3. Try PCI cards in other PCI slots.
4. If the issue follows the card, swap it, otherwise, replace the main board.
5. If the issue remains, replace the power supplies.
Baseboard +5V Stand-by
(BB +5.0V STBY)
+5.0V STBY is supplied by the power supplies for pedestal systems, and supplied by the main board on
rack-optimized systems.
+5.0V STBY is used to generate other standby voltages.
1. Ensure all cables are connected correctly.
2. If the issue remains, replace the board.
3. If the issue remains, replace the power supplies.