Operation Manual

Note: See Chapter 7, “Parts listing, Types 8861, 8862,” on page 139 to determine which components are
replaceable by the customer and which components must be replaced by an IBM field service technician.
Service Processor/RXE-100 message FRU/action
PCI Expansion Unit X Side A or B: +1.8v over
voltage
v Replace board as indicated.
PCI Expansion Unit X Side A or B: +1.8V
Power Not Adequate
v Replace board as indicated.
PCI Expansion Unit X Side A or B: +1.8v
under recommended voltage
1. Check for shorts on boards.
2. Replace board as indicated.
PCI Expansion Unit X Side A or B: +1.8v
under voltage
1. Check for shorts on boards.
2. Replace board as indicated.
PCI Expansion Unit X Side A or B: +12V A
Bus Fault
1. Check all slots.
2. Replace Board A
3. Replace DMC card.
4. Power backplane.
5. Power supply.
PCI Expansion Unit X Side A or B: +12V B
Bus Fault
1. Check all slots.
2. Replace Board B.
3. Replace DMC card.
4. Power backplane
5. Power supply
PCI Expansion Unit X Side A or B: +12V C
Bus Fault
1. Replace fans one at a time until error clears.
2. Replace DMC card.
3. Power backplane
4. Power supply
PCI Expansion Unit X Side A or B: +12V D
Bus Fault
1. DMC card.
2. Power backplane
3. Power supply
PCI Expansion Unit X Side A or B: +12v over
recommended voltage
v Power supply.
PCI Expansion Unit X Side A or B: +12v over
voltage
v Power supply.
PCI Expansion Unit X Side A or B: +12v
under recommended voltage
1. Check adapters for shorts.
2. Check pins.
3. Power supply
PCI Expansion Unit X Side A or B: +12v
under voltage
1. Check adapters for shorts.
2. Check pins.
3. Power supply.
PCI Expansion Unit X Side A or B: +2.5V
Branch-A Power Not Adequate
v Remove adapters one at a time.
PCI Expansion Unit X Side A or B: +2.5V
Branch-B Power Not Adequate
v Remove adapters one at a time.
PCI Expansion Unit X Side A or B: +2.5v over
recommended voltage
v Replace Board A or B as indicated.
116 IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide