TX120 S3 Upgrade and Maintenance Manual 343
System board and components
14.3.3 Replacing the TPM board
V CAUTION!
Advise your contact persons that they must provide you with TPM
backup copies. For security reasons, the TPM must be restored/re-
saved by the customer. After installing a new system board, the TPM
must be enabled. You may not clear the TPM data.
If the contact persons DO NOT have a backup copy available, inform
them that replacing the TPM board will cause to lose all data.
14.3.3.1 Required tools
● Preliminary and concluding steps: tool-less
● Removing the system board:
– Phillips PH2 / (+) No. 2 screw driver
● Replacing the TPM:
– Bit screw driver
– TPM bit insert *
– thin slotted screw driver (
2 x 0.4 mm)*
* For the Japanese market:
– Dedicated TPM screw driver (CWZ8291A)
– TPM module fixing tool (S26361-F3552-L909)
14.3.3.2 Preliminary steps
Before replacing the TPM board, perform the following steps:
Ê Disable BitLocker functionality as described in section "Disabling BitLocker
functionality" on page 79.
Ê Locate the defective server as described in section "Locating the defective
server" on page 50.
Field Replaceable Units (FRU)
Average task duration: 40 minutes
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