NEC 140He - Manual (Page 313)

9-55
Processor Board
To install or remove a processor, remove the processor board.
Removal
Remove the processor board as follows:
IMPORTANT: The processor board is extremely sensitive to static electricity. Make sure
to touch the metal frame of the server to discharge static electricity from your body before
handling the processor board. Do not touch the processor board terminals or on-board parts
by a bare hand or place the processor board directly on the desk. For static notes, see the
section "Anti-static Measures" described earlier.
1. See the section "Preparing for Installation and Removal" described earlier to prepare.
2. Unlock the front door with the security key, and open the front door.
3. Remove the memory board cover.
4. Remove the two screws and then remove the processor board cover.