Replace A Cru; Computer Cover - Lenovo 30DH00H8IX User Manual

• Type-1 storage drive converter*
• Type-2 storage drive converter*
Optional-service CRUs
• Coin-cell battery
• E-lock*
• Front fan*
• Graphics card and plastic holder*
• Heat-sink-and-fan assembly
• PCI-Express card*
• Power supply assembly
• Rear fan*
* for selected models

Replace a CRU

Follow the replacement procedure to replace a CRU.

Computer cover

Prerequisite
Before you start, read Appendix B "Important safety information" on page 109 and print the following
instructions.
Before you open the computer cover, turn off the computer and wait several minutes until the computer is
cool.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect all power cords from electrical outlets and disconnect all cables from the computer.
3. Unlock any locking device that secures the computer cover. See "Lock the computer" on page 19.
4. Lay down the computer with the computer cover facing up.
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P340 User Guide