HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide

Screen message Probable cause Recommended action
2. Reseat or replace the missing mechanism cable.
941—PCIe Device(s) installed
in slots 3 or 4 with a single
CPU
Invalid system configuration. 1. Move the PCIe device from PCIe slots 3 and/or 4
to other PCIe slots.
2. Add a second processor using appropriate HP
accessory kit.
942—Memory Train Error A DIMM or DIMMs did not train
correctly.
1801—Microcode Update
Error
Unknown or unsupported processor
stepping.
The microcode update failed. If the processor
stepping is supported, contact HP Support.
1802—Processor Not
Supported
The system board does not support
the processor.
Replace the processor with a compatible one.
152 Chapter 4 Diagnostics and troubleshooting