Lenovo System x3500 M4 Installation And Service Manual page 1001

2. Make sure that the DIMM connectors are correctly populated for mirroring mode, according to
the service information for this product.
• W.580A2 [W.580A2] Invalid memory configuration for Sparing Mode. Please correct memory
configuration.
Explanation: Unsupported DIMM Population for Spare Mode
Severity
Error
User Response
Complete the following steps:
1. Make sure that the DIMM connectors are correctly populated for sparing mode, according to
the service information for this product.
• W.68002 [W.68002] A CMOS battery error has been detected
Explanation: CMOS Battery Fault
Severity
Error
User Response
Complete the following steps:
1. If the system was recently Installed, Moved, or Serviced, makesure the batter is properly seated.
2. Check IBM support site for an applicable service bulletin or firmware update that applies to
this error.
3. Replace CMOS Battery
4. (Trained Service technician only) Replace the system board.
Appendix B. UEFI (POST) error codes
987