Dell OptiPlex 3070 Micro Service Manual

Removing system board

1. Follow the procedure in Before working inside your computer.
2. Remove the:
   1. Side cover
   2. 2.5 hard drive assembly
   3. Heat sink blower
   4. WLAN
   5. M.2 PCIe SSD
   6. Memory module
   7. Optional module
   8. Heat sink
   9. Processor
3. To remove the HDD caddy support:
   1. Remove the screw that secures the HDD caddy support to the system board [1].
   2. Lift the HDD caddy support away from the system board [2].
      
      
4. To remove the system board:
   1. Remove the two (M3x4) screws [1] and three (6-32x5.4) screws [2] that secure the system board to the system.
      
      
   2. Lift the system board to disengage the connectors from the back of the computer [1].
   3. Slide the system board away from the computer [2].