448 Upgrade and Maintenance Manual TX140 S1
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
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– thin slotted screw driver (2 x 0.4 mm)
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)
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)
For the Japanese market:
– Dedicated TPM screw driver (CWZ8291A)
– TPM module fixing tool (S26361-F3552-L909)
Field Replaceable Units (FRU)
Average task duration: 40 minutes