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HP Designjet L26500/L28500 Edge B8K59A 4 Hardware maintenance, Ink system tips, Automatic alignment, Align the printheads, Maintain hardware

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4 Hardware maintenance

For the tasks in this chapter, you may need the User Maintenance Kit that was provided with your printer.

Ink system tips

For best results, always follow these guidelines:

●Follow the instructions on the front panel during installation.

●Allow the printer and the printhead cleaning cartridge to clean the printheads automatically.

●Avoid unnecessary removal of the ink cartridges and printheads.

●The ink cartridges should never be removed while the printer is printing. They should be removed only when the printer is ready for you to replace them. The front panel guides you through the replacement procedure.

●Make sure that you comply with all applicable laws and regulations when disposing of ink system consumables.

NOTE: Shake the ink cartridges and printheads vigorously before installing them.

Align the printheads

The printer performs printhead alignment whenever printheads are replaced. If no substrate is loaded when a printhead is replaced, the printer will perform the alignment the next time you load substrate.

You may also be recommended to align the printheads to solve a print-quality problem.

Automatic alignment

First make sure that you have a roll of opaque, white substrate loaded in the printer. Colored substrates, glossy canvas, and transparent materials such as translucent bond, clear film, tracing substrate, and vellum are not suitable for automatic printhead alignment; for these substrates, you should align the printheads manually (see Manual alignment on page 10).

To request printhead alignment from the front panel (if the alignment is not performed automatically), select the icon, then select Image quality maintenance > Align printheads > Auto PH alignment.

To request printhead alignment from the Embedded Web Server, select the Setup tab, then select Printhead alignment > Automatic printhead alignment > Print.

Maintain hardware

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Ink system tips

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Contents

Page Page Table of contents Page Page Page 1 Safety precautions General safety guidelines Electrical shock hazard Heat hazard Fire hazard Mechanical hazard Heavy substrate hazard Ink handling Warnings and cautions Warning labels 2 Printer status Check printer status Check the status of the ink system Check the status of the ink cartridges Ink menu procedure Check the status of a printhead Check the file system Printer alerts 3 Firmware update 4 Hardware maintenance Ink system tips Check substrate porosity Page Clean the electrical connections on a printhead Page Page Clean the exterior of the printer Clean the platen Page Page Clean after porous substrates Clean (recover) the printheads Clean the substrate-advancesensor window Lubricate the printhead carriage Lubricate the platen rollers hardwareMaintain Maintain the ink cartridges Move or store the printer Replace an ink cartridge Page Page Refilled and non-HPink cartridges Replace the ink maintenance kit Page Page Replace a printhead Page Page Page Page Replace the printhead cleaning kit Page Page Page Page Service maintenance 5 Substrate settings Download media presets Add a new substrate Summary Select printer settings and color profile settings Substrate Page Load the substrate and print the diagnostic plot Change settings while printing Advanced settings Page Temperature profile Select the number of passes Check the quantity of ink on the substrate Page Faster printing Color calibration Color profiles Color reproduction tricks 6 Troubleshoot print-qualityissues General printing advice Use the printhead status plot Print the printhead status plot Interpret the printhead status plot Graininess Horizontal banding Adjust the substrate advance Vertical banding The print is deformed into a curved shape Misaligned colors Color intensity varies Lack of sharpness Black areas look hazy Ink smears Subtle stains or uneven appearance The ink smudges when touched, or looks oily The dimensions of the print are wrong Tiling issues 7 Troubleshoot substrate issues The substrate cannot be loaded successfully The substrate is mispositioned The substrate has jammed Check the substrate path Check the printhead path Page Avoiding substrate jams The substrate is deformed or wrinkled The substrate has shrunk or expanded The substrate has bow deformation Take-up reel substrate jam The automatic cutter does not work Take-upreel does not wind Page 8 Troubleshoot ink-systemissues Ink maintenance kit needs to be installed Cannot insert an ink cartridge Cannot insert a printhead Cannot insert the printhead cleaning cartridge Front panel recommends reseating or replacing a printhead Clean the printheads Page Page 9 Troubleshoot other issues The printer cannot get an IP address Cannot access the Embedded Web Server The printer is not printing The software program slows down or stalls while generating the print job The printer seems slow Cannot access files on the hard disk Communication failures between computer and printer The platen rollers squeak 10 Front-panelerror messages Error messages Page Page Page Printer logs 11 When you need help Introduction Documentation Customer Self Repair HP Customer Care Centers Telephone number Service information ASummary of common printing problems Index