TX140 S1 Upgrade and Maintenance Manual 443
System board and components
Ê If BitLocker functionality is used and has been disabled before starting the
maintenance task, re-enable BitLocker as described in section "Enabling
BitLocker functionality" on page 116.
14.3.2 Removing 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.
14.3.2.1 Required tools
● Preliminary and concluding steps: tool-less
● Removing the system board:
– Phillips PH2 / (+) No. 2 screw driver
● Removing the TPM:
– thin slotted screw driver (
2 x 0.4 mm)
For the Japanese market:
– Dedicated TPM screw driver (CWZ8291A)
Field Replaceable Units (FRU)
Average task duration: 30 minutes
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