Owners Manual

ManualsBrandsDell ManualsConverged InfrastructurePrecision 7820 Tower

Chapter 1: Chassis.........................................................................................................................7

Front view..............................................................................................................................................................................7

Back view...............................................................................................................................................................................8

Internal view..........................................................................................................................................................................9

Major components of your system ................................................................................................................................11

Chapter 2: Working on your computer..........................................................................................13

Safety instructions.............................................................................................................................................................13

Turning off your computer — Windows.......................................................................................................................13

Before working inside your computer........................................................................................................................... 14

After working inside your computer.............................................................................................................................. 14

Chapter 3: Removing and installing components.......................................................................... 15

Screw size list..................................................................................................................................................................... 15

Recommended tools..........................................................................................................................................................16

Power supply unit (PSU)..................................................................................................................................................16

Removing the PSU.......................................................................................................................................................16

Installing the PSU......................................................................................................................................................... 17

Side cover............................................................................................................................................................................ 17

Removing the side cover............................................................................................................................................ 17

Installing the side cover.............................................................................................................................................. 19

Front bezel...........................................................................................................................................................................19

Removing the front bezel...........................................................................................................................................19

Installing the front bezel.............................................................................................................................................21

Hard Disk Drive bezel........................................................................................................................................................ 21

Removing HDD bezel...................................................................................................................................................21

Installing HDD bezel.................................................................................................................................................... 22

Hard disk drive assembly................................................................................................................................................. 22

Removing the HDD carrier........................................................................................................................................ 22

Installing the HDD carrier...........................................................................................................................................24

Removing the HDD......................................................................................................................................................24

Installing the HDD........................................................................................................................................................26

NVMe Flexbay....................................................................................................................................................................26

Removing the NVMe Flexbay................................................................................................................................... 26

Installing the NVMe flexbay....................................................................................................................................... 31

Slim Optical Disk Drive..................................................................................................................................................... 33

Removing the slim ODD............................................................................................................................................. 33

Installing the slim ODD............................................................................................................................................... 35

Front input and output bezel..........................................................................................................................................35

Removing front input and output bezel................................................................................................................. 35

Installing front input and output bezel....................................................................................................................37

5.25 inch ODD bracket.....................................................................................................................................................37

Removing the 5.25 ODD bracket.............................................................................................................................37

Installing the 5.25 ODD bay...................................................................................................................................... 40

Contents

Contents 3