Dell Precision 5860 Tower Service Manual page 99

NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup
program. You must make the appropriate changes again after you replace the system board.
NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can
reconnect the cables correctly after you replace the system board.
2. Remove the side cover.
3. Remove the front bezel.
4. Remove the front I/O
5. Remove the air shroud.
6. Remove the PCIe holder.
7. Remove the 3.5-inch hard drive/2.5-inch hard
8. Remove the memory module.
9. Remove the M.2 2230 SSD/M.2 2280
10. Remove the hard-drive fan
11. Remove the internal hard-drive
12. Remove the powered
NOTE: Remove the graphics-card rubber protector from the chassis before removing the system board.
13. Remove the intrusion
14. Remove the heat-sink
15. Remove the front-fan assembly
16. Remove the power-supply
NOTE: Remove the power-supply cable clips from the power-supply cover before removing the system board.
17. Remove the processor.
About this task
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
bracket.
drive.
SSD.
assembly.
cage.
GPU.
switch.
assembly.
and rear-fan assembly.
unit.
Removing and installing components 99