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Replacing the System Board
Dell™Optiplex™740Systems
User's Guide
Removing the System Board: Mini Tower, Desktop, and Small Form Factor Computers
1. Follow the procedures in Before You Begin.
2. Remove any components that restrict access to the system board such as: the (optical drive(s), floppy drive, hard drive, and I/O panel (as applicable).
3. Remove the processor and heat sink assembly:
l Mini Tower: see Processor
l Desktop: see Processor
l Small Form Factor: see Processor
4. Disconnect all cables from the system board.
5. Remove the screws from the system board.
l Mini Tower System Board Screws
l Desktop System Board Screws
l Small Form Factor System Board Screws
6. Slide the system board assembly toward the front of the computer, and then lift the board up and away.
Mini Tower System Board Screws
Desktop System Board Screws
NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the
computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.
1
mini tower system board
2
screws (8)