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 4, “Parts listing, Types 7871 and 1949,” on page 41 to determine which components are CRUs and
which components are FRUs.
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Error Code Type Error Message Action
0x806F0813 Error Group 4 (Critical Int) bus
uncorrectable error
1. Verify that the system is running the latest UEFI
firmware (see “Firmware updates” on page 33).
2. (Trained service technician only) If the error
continues, replace the system-board assembly (see
“Removing the system-board assembly” on page
94 and “Installing the system-board assembly” on
page 95).
Chapter 6. Diagnostics 143
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