IBM System x3950, Problem Determination And Service Manual

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing, Type 8878 and 8879,” on page 109 to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Error message Action
PCI to PCI Bridge Discard Timer Error
Chassis#=X Slot#=Y Bus#=Z Dev.ID=0xSSSS
Vend.ID=0xTTTT Status=0xUUUU
DevFun#=0xVV
1. If the slot number is greater than 0, complete the following
steps:
a. Reseat the adapter.
b. Replace the adapter.
2. If the slot number is 0, replace the PCI board.
SMI handler reporting Memory Mirroring Failover
Occurred. Running from mirrored image.
Note: This message immediately follows an
uncorrectable memory error.
1. Reseat the DIMM or memory card.
2. If the DIMM was disabled by the user, run the
Configuration/Setup Utility program and enable the DIMM.
3. Replace the DIMM or memory card.
4. If the DIMM was disabled by the user, run the
Configuration/Setup Utility program and enable the DIMM.
SMI handler reporting Processor Event:
Unrecoverable error. Chassis Number = X.
Processor ID = Y.
(Trained service technician only) Replace the microprocessor.
Solving SCSI problems
Note: This information also applies to Serial Attached SCSI (SAS) problems.
For any SCSI error message, one or more of the following devices might be
causing the problem:
v A failing SCSI device (adapter, drive, or controller)
v
An incorrect SCSI termination jumper setting
v Duplicate SCSI IDs in the same SCSI chain
v
A missing or incorrectly installed SCSI terminator
v A defective SCSI terminator
v
An incorrectly installed cable
v A defective cable
For any SCSI error message, follow these suggested actions in the order in which
they are listed until the problem is solved:
1. Make sure that external SCSI devices are turned on before you turn on the
server.
2. Make sure that the cables for all external SCSI devices are connected correctly.
3. If an external SCSI device is attached, make sure that the external SCSI
termination is set to automatic.
4. Make sure that the last device in each SCSI chain is terminated correctly.
5. Make sure that the SCSI devices are configured correctly.
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide