Data affected ..................................................................................................... 90
Additional Information ....................................................................................... 91
Job storage ....................................................................................................... 91
DSS authentication ............................................................................................................ 91
Lock the control-panel menus ............................................................................................ 91
Lock the formatter cage ..................................................................................................... 92
Manage supplies ................................................................................................................................ 93
Print-cartridge storage ....................................................................................................... 93
HP policy on non-HP print cartridges ................................................................................. 93
HP fraud hotline and Web site ........................................................................................... 93
Replace supplies ............................................................................................................... 93
Supplies life ....................................................................................................... 93
Locate supplies ................................................................................................. 94
Supply replacement guidelines ......................................................................... 94
Change print cartridges ..................................................................................... 94
Change the toner collection unit ........................................................................ 98
Install memory ................................................................................................. 100
Install DDR memory DIMMs ........................................................... 100
Enable memory for Windows .......................................................... 104
Install an HP Jetdirect or EIO print server card or EIO hard disk ... 105
Clean the product ............................................................................................................................. 108
Clean the outside of the product ...................................................................................... 108
Clean the touchscreen ..................................................................................................... 108
Clean the scanner glass .................................................................................................. 108
Clean the document feeder ............................................................................................. 108
Clean the document-feeder backing ............................................................... 109
Clean the document-feeder rollers .................................................................. 110
Clean the fuser ................................................................................................................ 111
Product updates ............................................................................................................................... 112
Determine the current firmware version ........................................................................... 112
Download new firmware from the HP Web site ............................................................... 112
Transfer the new firmware to the product ........................................................................ 112
Use the flash executable file to update the firmware ...................................... 112
Use FTP to upload the firmware through a browser ....................................... 113
Use FTP to upgrade the firmware on a network connection ........................... 113
Use HP Web Jetadmin to upgrade the firmware ............................................. 114
Use Microsoft Windows commands to upgrade the firmware ......................... 114
5 Theory of operation
Basic operation ................................................................................................................................. 116
Sequence of operation ..................................................................................................... 116
Engine-control system ...................................................................................................................... 118
DC controller .................................................................................................................... 119
ENWW v
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