Dell OptiPlex 7070 Service Manual page 4

Removing the optical drive....................................................................................................................................... 33
Installing the optical drive..........................................................................................................................................37
Memory module................................................................................................................................................................. 40
Removing memory module........................................................................................................................................ 40
Installing the memory module....................................................................................................................................41
Heatsink fan........................................................................................................................................................................42
Removing heatsink fan............................................................................................................................................... 42
Installing the heatsink fan..........................................................................................................................................43
Heatsink assembly.............................................................................................................................................................44
Removing heatsink assembly.................................................................................................................................... 44
Installing heatsink assembly...................................................................................................................................... 45
Intrusion switch................................................................................................................................................................. 46
Removing intrusion switch........................................................................................................................................ 46
Installing the intrusion switch................................................................................................................................... 47
Power switch......................................................................................................................................................................48
Removing power switch............................................................................................................................................ 48
Installing the power switch....................................................................................................................................... 49
Processor............................................................................................................................................................................ 50
Removing processor................................................................................................................................................... 50
Installing the processor...............................................................................................................................................51
M.2 PCIe SSD ................................................................................................................................................................... 52
Removing the M.2 PCIe SSD .................................................................................................................................. 52
Installing the M.2 PCIe SSD......................................................................................................................................53
Power supply unit..............................................................................................................................................................54
Removing power supply unit or PSU...................................................................................................................... 54
Installing the power supply unit or PSU.................................................................................................................56
Speaker................................................................................................................................................................................58
Removing speaker....................................................................................................................................................... 58
Installing the speaker..................................................................................................................................................59
System board..................................................................................................................................................................... 60
Removing system board............................................................................................................................................ 60
Installing the system board....................................................................................................................................... 64
Chapter 5: Troubleshooting.........................................................................................................68
Enhanced Pre-Boot System Assessment - ePSA diagnostics............................................................................ 68
Running the ePSA Diagnostics.................................................................................................................................68
Diagnostics..........................................................................................................................................................................68
Diagnostic error messages.............................................................................................................................................. 70
System error messages....................................................................................................................................................73
Chapter 6: Getting help............................................................................................................... 75
Contacting Dell...................................................................................................................................................................75
4 Contents