HP Designjet T790 Series User Manual

Lines are blurred .................................................................................................................. 170
Line lengths are inaccurate .................................................................................................... 171
The whole image is blurry or grainy ....................................................................................... 171
The paper is not flat ............................................................................................................. 172
The print is scuffed or scratched ............................................................................................. 172
Ink marks on the paper ......................................................................................................... 172
Black ink comes off when you touch the print ........................................................................... 173
Edges of objects are stepped or not sharp ............................................................................... 174
Edges of objects are darker than expected .............................................................................. 174
Horizontal lines at the end of a cut sheet print ......................................................................... 174
Vertical lines of different colors .............................................................................................. 175
White spots on the print ........................................................................................................ 175
Colors are inaccurate ........................................................................................................... 175
Colors are fading ................................................................................................................. 176
The image is incomplete (clipped at the bottom) ....................................................................... 176
The image is clipped ............................................................................................................ 177
Some objects are missing from the printed image ..................................................................... 178
A PDF file is clipped or objects are missing ............................................................................. 178
The Image Diagnostics Print ................................................................................................... 178
If you still have a problem ..................................................................................................... 181
18 Troubleshooting ink cartridge and printhead issues .................................................... 182
Cannot insert an ink cartridge ............................................................................................... 183
Ink cartridge status messages ................................................................................................. 183
Cannot insert a printhead ...................................................................................................... 183
The front-panel display recommends reseating or replacing a printhead ...................................... 183
Clean the printheads ............................................................................................................ 184
Clean the printhead drop detector .......................................................................................... 184
Align the printheads ............................................................................................................. 186
Printhead status messages ..................................................................................................... 188
19 Troubleshooting general printer issues ........................................................................ 190
The printer will not start ......................................................................................................... 191
The printer does not print ...................................................................................................... 191
The printer seems slow .......................................................................................................... 192
Communication failures between computer and printer ............................................................. 192
Cannot access the HP Utility .................................................................................................. 193
Cannot access the Embedded Web Server .............................................................................. 193
Cannot connect to the Internet ............................................................................................... 193
Web Services issues ............................................................................................................. 194
Automatic file system check ................................................................................................... 194
Alerts .................................................................................................................................. 195
ENWW vii

HP Designjet T790 Series Specifications

General

Print Technology	Thermal Inkjet
Print Resolution	Up to 2400 x 1200 optimized dpi
Number of Print Cartridges	6 (cyan, magenta, yellow, matte black, photo black, gray)
Connectivity	Gigabit Ethernet (1000Base-T), Hi-Speed USB 2.0, EIO Jetdirect accessory slot
Print Speed	28 sec/page on A1/D
Print Languages	HP-GL/2, HP-RTL, CALS G4, JPEG, TIFF
Power Consumption	120 watts (printing)
Media Sizes	A4, A3, A2, A1, A0, B, C, D, E
Media Types	Bond and coated paper, technical paper, film, photographic paper, self-adhesive
Operating Systems Supported	Windows, macOS, Linux
Ink Types	Dye-based (color), pigment-based (black)