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An abnormal sound ........................................................................................................................ 244
9 The problem is print quality
10 Tell me about… (basic knowledge topics)
Operating conditions ...................................................................................................................... 248
Installation space .................................................................................................... 248
Environmental conditions ....................................................................................... 248
Operating temperature and humidity levels .................................... 248
Places where the printer must not be installed ............................... 249
The power supply ........................................................................................................................... 249
Power .................................................................................................................... 249
Dryer ....................................................................................................................... 250
Exhaust attachment ................................................................................................ 250
Front panel messages and printer state ......................................................................................... 250
Messages on the front panel .................................................................................. 250
Initialization display ......................................................................... 250
Online state (idle mode) display ...................................................... 251
Online state (print mode) display .................................................... 251
Online state (print pause mode) display ......................................... 251
Print stop and resume ............................................. 251
Print cancel (end) .................................................... 251
Online state (print information mode) display ................................. 252
Offline (menu mode) display ........................................................... 252
Shutdown state display ................................................................... 253
11 Tell me about media
Storing media ................................................................................................................................. 255
Disposing of media ......................................................................................................................... 255
Using media ................................................................................................................................... 256
Handling prints ............................................................................................................................... 256
Other precautions ........................................................................................................................... 256
12 Tell me about the ink system
Ink cartridges .................................................................................................................................. 257
Replacing an ink cartridge .............................................................................................................. 259
Ink cartridge storage and disposal ................................................................................................. 260
HP 790 Waste Ink Bottle ................................................................................................................ 261
Precautions for handling the waste ink bottle ......................................................... 261
HP 790 Cap Cleaning Kit ............................................................................................................... 261
HP 790 Wiper Cleaning Liquid Kit .................................................................................................. 262
HP 790 Ink System Storage Kit ...................................................................................................... 262
HP 790 Ink System Cleaning Kit .................................................................................................... 262
13 Tell me about waste management
General recommendations ............................................................................................................. 266
14 Tell me about front panel menus
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