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: +2.5v over
voltage
v Replace Board A or B as indicated.
PCI Expansion Unit X Side A or B: +2.5v
under recommended voltage
1. Check for obvious shorts.
2. Replace board A or B as indicated.
PCI Expansion Unit X Side A or B: +2.5v
under voltage
v Replace Board A or B as indicated.
PCI Expansion Unit X Side A or B: +3.3v over
recommended voltage
1. Check ac power.
2. Replace VRM40.
3. Replace dc power supply.
PCI Expansion Unit X Side A or B: +3.3v over
voltage
1. Verify ac power is working correctly.
2. VRM-40.
3. Power supply.
PCI Expansion Unit X Side A or B: +3.3v PCI
over recommended voltage
v Replace adapter card as indicated.
PCI Expansion Unit X Side A or B: +3.3v PCI
over voltage
v Replace Board.
PCI Expansion Unit X Side A or B: +3.3v PCI
under recommended voltage
1. Check ac power.
2. Check for shorted adapter in slots 5 or 6.
3. Replace VRM40.
4. Replace dc power supply.
5. Replace board.
PCI Expansion Unit X Side A or B: +3.3v PCI
under voltage
v Replace Board as indicated.
PCI Expansion Unit X Side A or B: +3.3V
Power Not Adequate
v Remove adapters one at a time.
PCI Expansion Unit X Side A or B: +3.3v
under recommended voltage
1. Check ac power.
2. Check for shorted adapter in slots 1,2,3, or 4.
3. Replace VRM40.
4. Replace dc power supply.
5. Replace board.
PCI Expansion Unit X Side A or B: +3.3v
under voltage
1. Check ac power.
2. Check for shorted adapter in slots 1,2,3, or 4.
3. Replace VRM40.
4. Replace dc power supply.
5. Replace board.
PCI Expansion Unit X Side A or B: +3.3V
VRM Power Not Adequate
v Remove adapters one at a time.
PCI Expansion Unit X Side A or B: +5V Fault
1. Check slot 1, 2, 3, or 4 for short.
2. Power supply.
PCI Expansion Unit X Side A or B: +5v over
recommended voltage
v Replace power supplies one at a time until error clears.
PCI Expansion Unit X Side A or B: +5v over
voltage
v Replace power supplies one at a time until error clears.
Chapter 6. Symptom-to-FRU index 117