Lenovo System x3550 M5 Installation And Service Manual page 944

3. If error persists, or boot is unsuccessful, (Trained service technician only) Replace the system
board.
• I.3818002 The firmware image capsule signature for the non-booted flash bank is invalid. Opposite
Bank CRTM Capsule Update Signature Invalid
Explanation:
Severity
Info
User Response
Complete the following steps:
1. Update the backup UEFI image.
2. If error does not persist no additional recovery action is required.
3. If error persists, or boot is unsuccessful, (Trained service technician only) Replace the system
board.
• I.3818003 The CRTM flash driver could not lock the secure flash region. CRTM Could not lock
secure flash region
Explanation:
Severity
Info
User Response
Complete the following steps:
1. If system failed to boot successfully, DC cycle the system.
2. If system boots to F1 setup, update the UEFI image and reset bank to primary (if required). If the
system boots without error, recovery is complete and no additional action is required.
3. If system fails to boot, or if the firmware update attempt fails, (trained service technician only)
replace the system board.
• I.3818009 The TPM could not be properly initialized. TPMINIT: Fail to initialize TPM chip.
Explanation:
Severity
Info
User Response
Complete the following steps:
1. Check the Lenovo support site for an applicable service bulletin or firmware update that
applies to this error.
2. Reboot the system.
3. If the error continues, replace the system-board assembly (see Removing the system-board
assembly and Installing the system-board assembly).
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Lenovo System x3550 M5 Installation and Service Guide