Common Problems solutions for Laser Printer
1. White Vertical Stripes:
· Causes:
· The laser radiation outlet of the printer or toner cartridge is shielded by some foreign material;
· There is some foreign material on the cleaning scraper of toner cartridge;
· The waste toner container is overfilled.
· Solutions:
1. Disassemble the toner cartridge and clean the scraper or replace a new toner cartridge;
2. Tap the waste toner container gently and shake the toner cartridge to get the waste powder uniformly distributed;
3. Clear up the waste powder in the waste toner container.
2.Toner Specks
· Cause:
· There is toner powder left in the paper path of the printer.
· Solutions:
1. Print documents with only one word on each page with high-quality printing papers to clean the internal parts of the printer;
2. if the problem is unsolved, then the toner container or toner cartridge may have to be replaced.
3 Washed-out Print
· Causes:
· Toner is low in the toner cartridge;
· The image develops voltage is low.
· Solutions:
1. Take out the toner cartridge and shake it gently. If the print result is not improved, then replace the toner cartridge with a new one or contact professional serviceman to deal with it.
2. In addition, there is a group of switches beneath the toner cartridge for adjusting the laser intensity and match the luminous sensitivity of the toner. If the switches are set improperly, then the printout could be faded.
4. Dark Vertical Bands
· Causes:
· The reverse mirror above the photosensitive drum is moved;
· The laser beam scans outside of the normal range;
· Toner cartridge loses efficacy;
· The toner is at one side of the cartridge.
· Solutions:
1. Take out the toner cartridge and shake it slightly to make the toner in it distribute evenly.
2. If the issue is not solved, please replace the toner cartridge.
5. Full Page with Gray Background
· Causes:
· The developing bias voltage is too low;
· Magnetic roller scraper is ageing;
· The developing magnetic roller is too close with the photosensitive drum;
· The photosensitive drum is overworn and its service life comes to an end;
· The electric conduction between the toner cartridge and printer is abnormal.
· Solutions:
1. Check the photosensitive drum surface to see if there is toner powder on it. If yes, the magnetic roller scraper is ageing and out of shape, replace the scraper with a new one.
2. Check the conductive steel strap on the toner cartridge and contacts of the printer to see if there are some foreign materials or some parts are missing/damaged. Get rid of them if there are foreign materials.
6. Color Difference
· Causes:
· The color gamut of four-color printers is limited, so the print result is different from the photograph indeed;
· Toner cartridges of different brands will be different in colors during printing.
· Solutions:
1. Check the printed diagnostic page of four colors and replace the toner cartridge of the wrong color.
2. The laser device of corresponding color malfunctions and you need to carry out hardware maintenance to replace the laser device.
7. Ghosting
· Causes:
· Fuser assembly of the machine is ageing;
· Paper is damp;
· Toner cartridge is damp (the drum and toner powder);
· Black density is too high
· Solutions:
1. Replace regularly the fuser assembly and paper;
2. Print on around 10 to 20 pages and the printer will return to normal, or replace the toner cartridge with a new one;
3. Lower the print density of the printer.
8. White dots on printed black or grey pages
· Causes:
· Toner cartridge’s developer roller adheres with foreign materials;
· Toner cartridge’s developer roller adheres with substances of rubber or oil blowout.
· Solution:
· Replace it with a new toner cartridge.
9. Black dots on white or grey pages
· Causes:
· There is foreign material on toner cartridge’s PCR rubber or the PCR’s surface is broken.
· Solution:
· Replace it with a new toner cartridge
10. Smearing
· Causes:
· Toner cartridge’s primary charging roller is in bad contact during charging;
· The developing roller’s resistance is too high;
· The electricity amount on toner powder is too small;
· The toner powder is damp;
· OPC is in bad contact.
· Solution:
· Replace it with a new toner cartridge
Calm down when you encounter print quality issues. Make failure diagnosis according to the above steps, and then solve them based on our solutions. If you have other solutions, welcome to leave a message here and share with us.