HP t820 Maintenance & Service Manual page 6

4 Removal and replacement procedures ............................................................................ 17
Preparation for disassembly .................................................................................................... 17
Access panel ......................................................................................................................... 18
Front bezel ............................................................................................................................ 19
Front bezel security ................................................................................................................ 20
Memory ................................................................................................................................ 22
Front fan ............................................................................................................................... 25
Speaker ................................................................................................................................ 26
Heat sink .............................................................................................................................. 27
Processor .............................................................................................................................. 29
Smart Cover Lock (solenoid lock) .............................................................................................. 30
Drive cage (fiber NIC assembly holder) .................................................................................... 34
mSATA drive ......................................................................................................................... 35
Hood sensor .......................................................................................................................... 36
Installing the fiber NIC assembly .............................................................................................. 37
WLAN module ...................................................................................................................... 41
Graphics board ..................................................................................................................... 42
Power switch ......................................................................................................................... 43
System board ........................................................................................................................ 44
Rear fan ................................................................................................................................ 47
Antennas .............................................................................................................................. 49
Changing from desktop to tower configuration .......................................................................... 52
Port cover ............................................................................................................................. 53
Power supply, external ............................................................................................................ 54
Appendix A Battery replacement ....................................................................................... 55
Appendix B Computer Setup (F10) Utility, BIOS Settings ..................................................... 58
Computer Setup (F10) Utilities ................................................................................................. 58
vi
Lithium coin cell battery ............................................................................................ 16
SODIMMs .............................................................................................................. 22
DDR3-SDRAM SODIMMs ......................................................................................... 22
Populating SODIMM sockets .................................................................................... 23
Installing SODIMMs ................................................................................................ 24
Using Computer Setup (F10) Utilities .......................................................................... 59
Computer Setup-File .............................................................................................. 60
Computer Setup-Storage ........................................................................................ 61
Computer Setup-Security ........................................................................................ 62
Computer Setup-Power .......................................................................................... 65