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How to Identify and Fix Common Problems ?

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Smears and smudges on the paper can be caused by dirt, dust, or toner accumulated on the rollers or transfer belt as it passes through the paper. Cleaning your printer, particularly the rollers, is one of the options for removing black markings from paper.
When HP Smart displays the “Printer status unknown” error, the app can`t communicate with your printer. Issues with your printer connection, firmware, or driver are often responsible for this error message.
The drum cartridge may be defective. If you have a spare cartridge, replace and try to copy and print again. For details, refer to Replace the Drum Cartridge or follow the installation instructions that are included with the new cartridge. If the problem persists, contact Support.
It can stem from contamination, ink consistency, plate/sleeve issues, pressroom atmosphere, and everything in between. Dirty print often appears as speckles in the ink that give the print a dirty appearance or instances of excessive dot gain in high-resolution areas.
Your paper is “dirty” because toner is leaking onto the page at some point in the printing process. Either the toner cartridge is defective, something is overcharging the paper, or there is a dirty roller somewhere.
With Devices and Printers open from the Control Panel, select the printer and select “Remove device” in the tool bar or right click and select “Remove device” for the unspecified printer.
Take an 8.5×11 sheet of plain paper. Soak the interior of the sheet with rubbing alcohol, leaving all four edges completely dry. Run this sheet through your printer 2-3 times front and back. This will clean all of the internal rollers of debris and any ink.
For cleaning, HP recommends using HP Equipment Cleaning Wipes, but you can use an HP-approved lint-free wipe and deionized or distilled water. Note: If dark spots appear on back side of prints, clean drum screen. Note: If minilab prints more than 2000 prints each day, clean drum screen up to twice daily.
Usually a quick paper setting adjustment will clear up a ghosting issue right away. Run a cleaning – Most printers have a cleaning function built into the machine. Run this a couple of times to attempt to clear up the printing issue. Inspect the drum – Sometimes excess toner powder can stick to the drum.
Ghost prints happen when the drum or fuser unit within your printer become faulty. Because a fault with this element won`t heat the particles of the toner to a high enough temperature, the marks being made on the paper are much lighter in colour and appear more faded than typical documents.
During the printing process, paper, toner and dust particles can accumulate inside the printer. Over time, this buildup can cause print-quality problems such as toner specks or smearing. This printer has a cleaning mode that can correct and prevent these types of problems.
The sponge end of a blocked printer head can be cleaned with only one liquid other than water. This liquid is isopropyl alcohol. Isopropyl alcohol isn`t strong enough to melt the sponge but is still strong enough to dissolve the ink inside the blocked printer head.
A printer`s heads, nozzles, and other components can become dirty or clogged, which could show up as white lines running across your page. Your printer may have a head-cleaning feature available through your device software located on your computer or from the control panel on the printer itself.
If you notice that your print quality is uneven, too light, too dark, or there are vertical or horizontal lines in the print (banding), try these solutions: Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary.

Relevant Questions and Answers :

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