Lenovo System x3550 M4 Installation And Service Manual page 745

2. Boot to F1 setup, system will automatically try to recover the GPT during the POST, restart the
system.
3. If problem persists, re-format the LUN or disk and re-install the OS.
• W.3808000 [W.3808000] An IMM communication failure has occurred.
Explanation: IMM Communication Failure
Severity
Warning
User Response
Complete the following steps:
1. Reset the IMM from the CMM.
2. Use CMM to remove AUX power from the node. This will reboot the entire node.
3. Check IBM support site for an applicable service bulletin or firmware update that applies to this
error.
4. Reflash UEFI Firmware.
5. (Trained service technician only) Replace the system board.
• W.3808002 [W.3808002] An error occurred while saving UEFI settings to the IMM.
Explanation: Error Updating System Configuration to IMM
Severity
Warning
User Response
Complete the following steps:
1. Use F1 Setup, Verify Settings and Save Settings to recover settings.
2. Reset the IMM from the CMM.
3. Use CMM to remove AUX power from the node. This will reboot the entire node.
4. Check IBM support site for an applicable service bulletin or firmware update that applies to this
error.
5. Reflash IMM Firmware.
6. Remove and re-install CMOS battery for 30 seconds to clear CMOS contents.
7. Trained Service technician only) Replace the system board.
• W.3808003 .[W.3808003] Unable to retrieve the system configuration from the IMM.
Explanation: Error Retrieving System Configuration from IMM
Severity
Warning
User Response
Complete the following steps:
1. Use F1 Setup, Verify Settings and Save Settings to recover settings.
2. Reset the IMM from the CMM.
3. Use CMM to remove AUX power from the node. This will reboot the entire node.
4. Check IBM support site for an applicable service bulletin or firmware update that applies to this
error.
5. Reflash IMM Firmware.
6. Remove and re-install CMOS battery for 30 seconds to clear CMOS contents.
Appendix B. UEFI/POST diagnostic codes
731