HP L26500/L28500 User Manual Page 62
- Page / 96
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
If you see this kind of problem:
●
Ensure that the vertical correction option is disabled in the RIP and in the front panel. At the front
panel, select the
icon, then select Image quality maintenance > Disable vertical
correct. (if this option is available).
●
The printheads may be misaligned. This is likely if you have not aligned the printheads for a long
time, or if there has been a substrate jam. Align the printheads if necessary (see
Align the
printheads on page 9). You can check whether it is necessary by using the printhead status plot
(see
Use the printhead status plot on page 54).
●
If you are printing with eight or more passes, the substrate advance may need adjustment. See
Adjust the substrate advance on page 57.
●
Use a higher number of passes: you will probably see less grain with ten or more passes.
●
If graininess is more visible in dark or saturated colors, there may be a problem of ink
coalescence. Try lowering the ink quantity.
If the problem persists, call your service representative. See
When you need help on page 86.
Horizontal banding
Try the following remedies if your printed image suffers from added horizontal lines as shown (the color
may vary).
●
If bands affect mostly dark or saturated colors, or only area fills near the edges of the substrate,
the cause could be insufficient drying of the ink, or an inaccurate color profile. Try the following
suggestions.
◦
Reduce the ink quantity.
◦
Increase the number of passes.
◦
Modify your media preset as suggested in
Color reproduction tricks on page 53.
●
If bands affect all colors across the width of the printed image, the cause is probably a substrate
advance problem. Use the front panel to adjust the substrate advance on the fly (see
Substrate
advance adjustment on the fly on page 58). If you have dark bands, increase the substrate
advance; if you have light bands, decrease it. When you find the right adjustment, store the value
in the RIP for future prints on the same substrate.
Another cause could be a fiber attached to one of the printheads. Turn off the printer and allow it
to cool down, then remove the printheads one at a time and remove any fibers that you see
attached to them.
56 Chapter 6 Troubleshoot print-quality issues ENWW
Troubleshoot images
- Table of contents 3
- 1 Safety precautions 7
- Heat hazard 8
- Fire hazard 8
- Mechanical hazard 9
- Heavy substrate hazard 9
- Ink handling 9
- Warnings and cautions 9
- Warning labels 10
- 2 Printer status 11
- Ink menu procedure 12
- Check the file system 13
- Printer alerts 13
- 3 Firmware update 14
- 4 Hardware maintenance 15
- Check substrate porosity 16
- Maintain hardware 17
- Clean the platen 21
- Clean after porous substrates 24
- Lubricate the platen rollers 26
- Maintain the ink cartridges 28
- Move or store the printer 28
- Replace an ink cartridge 29
- Replace a printhead 36
- Service maintenance 46
- 5 Substrate settings 47
- Substrate settings 48
- Advanced settings 52
- Temperature profile 54
- Select the number of passes 54
- Faster printing 57
- Color calibration 57
- Color profiles 58
- Color reproduction tricks 59
- General printing advice 60
- Use the printhead status plot 60
- Graininess 61
- Horizontal banding 62
- Adjust the substrate advance 63
- Vertical banding 64
- Misaligned colors 65
- Color intensity varies 65
- Lack of sharpness 66
- Black areas look hazy 66
- Ink smears 67
- Troubleshoot images 68
- Tiling issues 69
- Troubleshoot substrate 70
- The substrate has jammed 71
- Avoiding substrate jams 73
- Take-up reel substrate jam 75
- Take-up reel does not wind 76
- Cannot insert a printhead 78
- Clean the printheads 79
- Align the printheads 79
- Reinsert printheads procedure 80
- Scan errors during alignment 81
- 9 Troubleshoot other issues 82
- The printer is not printing 83
- The printer seems slow 83
- Troubleshoot other 84
- The platen rollers squeak 85
- 10 Front-panel error messages 86
- Error messages 87
- Printer logs 91
- 11 When you need help 92
- HP Customer Care Centers 93
- Service information 93
- A Summary of common printing 94
Related products and manuals for Large format printers HP L26500/L28500
Large format printers HP K5400 User Manual
(103 pages)
(103 pages)
Large format printers HP FB950 User Manual
(127 pages)
(127 pages)
© 2020, manymanuals.com. All rights reserved. | 0.684 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals