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HP DESIGNJET Z6800 - Page 6

HP DESIGNJET Z6800
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Clean the platen ................................................................................................................................................. 138
Clean the paper-advance sensor window ......................................................................................................... 140
Lubricate the printhead carriage ...................................................................................................................... 140
Maintain the ink cartridges ................................................................................................................................ 141
Perform preventive maintenance ..................................................................................................................... 141
Move or store the printer .................................................................................................................................. 142
Update the printer firmware ............................................................................................................................. 143
Change the ink absorber ................................................................................................................................... 144
Secure disk erase ............................................................................................................................................... 147
12 Accessories ............................................................................................................................................. 149
Order accessories .............................................................................................................................................. 149
13 Troubleshoot print-quality issues ............................................................................................................. 151
General advice ................................................................................................................................................... 153
Troubleshooting tools ....................................................................................................................................... 153
Lines are too thick, too thin, or missing ............................................................................................................ 154
Lines appear stepped or jagged ........................................................................................................................ 155
Parts of lines or text are missing ...................................................................................................................... 155
Lines are printed double or in the wrong colors ............................................................................................... 156
Lines are blurred (ink bleeds from lines) .......................................................................................................... 156
Lines are slightly warped .................................................................................................................................. 157
Dark or light horizontal lines across the image (banding) ............................................................................... 157
The image is grainy ........................................................................................................................................... 158
The image has a metallic hue (bronzing) .......................................................................................................... 158
The printed output is not flat ............................................................................................................................ 159
The print smudges when touched ..................................................................................................................... 159
Ink marks appear on the paper ......................................................................................................................... 159
Defects near the top of a print .......................................................................................................................... 160
Colors are inaccurate ......................................................................................................................................... 161
The output is completely blank ........................................................................................................................ 163
The output contains only a partial print ........................................................................................................... 163
The image is clipped .......................................................................................................................................... 164
The image is in one portion of the printing area .............................................................................................. 164
The image is unexpectedly rotated .................................................................................................................. 165
The print is a mirror image of the original ........................................................................................................ 165
The print is distorted or unintelligible .............................................................................................................. 165
One image overlays another on the same print ............................................................................................... 165
Pen settings seem to have no effect ................................................................................................................ 165
The image has a wood-grain appearance (aeroworms) ................................................................................... 166
A square is not square ....................................................................................................................................... 166
vi ENWW

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