Table Of Contents - Dell Precision 3930 Rack Service Manual

1 Working on your computer............................................................................................................................. 5
Safety instructions............................................................................................................................................................. 5
Before working inside your computer........................................................................................................................5
Safety precautions....................................................................................................................................................... 6
Electrostatic discharge-ESD protection................................................................................................................. 6
ESD field service kit .................................................................................................................................................... 7
Transporting sensitive components........................................................................................................................... 8
After working inside your computer...........................................................................................................................8
2 Technology and components......................................................................................................................... 9
USB features...................................................................................................................................................................... 9
USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)............................................................................................................. 9
Speed.............................................................................................................................................................................9
Applications................................................................................................................................................................. 10
Compatibility................................................................................................................................................................10
DDR4...................................................................................................................................................................................11
DDR4 Details................................................................................................................................................................ 11
Memory Errors............................................................................................................................................................ 12
Processor...........................................................................................................................................................................12
3 Removing and installing components............................................................................................................14
Recommended tools.........................................................................................................................................................14
Screw size list....................................................................................................................................................................14
System board layout.........................................................................................................................................................15
Disassembly and reassembly .......................................................................................................................................... 15
System cover.............................................................................................................................................................. 15
Ear assembly................................................................................................................................................................17
Air duct.........................................................................................................................................................................21
Coin cell battery......................................................................................................................................................... 24
Hard drive assembly.................................................................................................................................................. 25
Hard drive backplane.................................................................................................................................................30
Memory module..........................................................................................................................................................37
Heat sink..................................................................................................................................................................... 39
Processor.................................................................................................................................................................... 40
Intrusion switch.......................................................................................................................................................... 42
System fan.................................................................................................................................................................. 43
System fan cage........................................................................................................................................................ 45
Graphics card fan cage..............................................................................................................................................47
M.2 PCIe Solid State Drive -SSD ............................................................................................................................49
Front Input Output panel........................................................................................................................................... 51
Power supply unit - PSU...........................................................................................................................................54
Power distribution board........................................................................................................................................... 57
Expansion card........................................................................................................................................................... 59
Contents
Contents 3