Dell OptiPlex 5070 Small Form Factor Service Manual

Installing the heatsink fan

1. Align the heatsink fan onto the heatsink assembly[1].
2. Replace the 3 screws to secure the heatsink fan to the heatsink assembly [2].
3. Connect the heatsink fan cable to the connector on the system board [3].
   
4. Install the:
   1. Hard drive and optical drive module
   2. HDD assembly
   3. Front bezel
   4. Side cover
5. Follow the procedure in After working inside your computer.