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How to Identify and Fix Common Problems ?

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You`ll know the drum is dirty if you notice that the print quality has become blurry and features blank spots or oddly-colored spots despite having full toner cartridges. Horizontal lines across the printout when the paper passes over a dirty area are another sign that it`s time for some maintenance.
Separate drum units last quite a bit longer than a toner cartridge and typically should be replaced after the use of 3-4 toners. Your printer should inform you when it`s time to replace the drum, but you can usually tell your drum is on it`s last legs if you start to see black spots or lines across the page.
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.
Toner is the powder ink that latches on to the paper to create text and images. It is stored in the toner cartridge. An image drum is the unit that copies the text and images from the computer and then transfers them to the paper, along with the toner.
The toner cartridge contains several components including the color pigment used to create letters and images. The imaging drum is the unit that transfers the toner to paper by following the principles of electrophotography. Not all laser printer models require both toner cartridge and imaging drums.
Printer drum repair is an important service that requires knowledge and experience to complete in order to restore your printer. It includes troubleshooting printer drum problems such as HP, Brother and others, cleaning printer drum cartridges, replacing printer drum 88a and buying printer drum cleaning.
This way, every time you replace the toner cartridge, you are replacing the image drum. Brother toner cartridges however do not and so you`ll need to replace the drum unit separately. The duration that the drum lasts really depends on the printer. Some last 10,000 pages while other last 25,000.
HP CE314A 126A Imaging Drum Unit – Rs. 5950.
Drum heads wear out!

Drummers who practice a lot should probably change heads once every six months. Drummers who own their own drums can probably change the heads without any problem, but if it is the first time, it might be a good idea to have someone at the drum shop, or an experienced drummer, teach you.

Toner is the powder ink that latches on to the paper to create text and images. It is stored in the toner cartridge. An image drum is the unit that copies the text and images from the computer and then transfers them to the paper, along with the toner.
You should replace it when your image quality declines and does not improve even after changing your toner. Or simply replace your drum when your printer notifies you to do so. When the replace drum light or message comes on, your printer might stop working without much notice.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My 2550n Color LaserJet does not want to print in color
ANSWER : That model had issues with the carousel solenoid sticking. That might explain why it works after you let it sit for 10 minutes. The solenoid gets hotter with use which causes the deteriorated foam on it to become sticky and hold down the release plate instead of letting it go. This allows the carousel to spin when it is supposed to stop for each color. The solenoid is located on the right side of the printer. If you open the lid, it is just behind the opening at the top right. You need to remove the top of the printer and scrape off the goo on top of the solenoid body. I put a piece of thin sticky backed felt to replace it. Other people use electrical tape.

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HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

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HP Color LaserJet 4700
ANSWER : Saludos Amigo le Que le Pasa a tu Impresora Es Que Tienes rota El Sistema de sierre de la puerta con el Cierre de los tóner es Por Esa Razon Que No Cierra los tóner Si Quieres repararla Ponte en Contacto Madrid Seis Cinco Cinco Tres Cuarenta dos cuarenta y uno Reparación en el Momento saludos

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Reset HP Color Laserjet 4700 transfer kit
ANSWER : How about the situation when resistor does not reset the transfer belt count and even new transfer belt out of the box is not doing it. Do you have any idea how to solve this problem? I did reset transfer belts and fusing units on several HL 4700 printers with no problem but also I came across few which were not possible to reset even with oryginal parts.

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HP Color LaserJet 4550 Streaking
ANSWER : hello,

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Color LaserJet 2500 new drum doesn't work.
ANSWER : The drums have a chip on them and it should have reset when you installed it. If not, then read this thread.

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HP Color Laserjet blank pages – only jetdirect page
ANSWER : What about the engine test? To do that, drop down the front tray. Feel around on the left side at the top and you’ll feel a little plastic dongle. If you lift up on that it will initiate an engine test page. That will be a page containing lines of each color.

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HELP! HP Color Laserjet 5500dn (formatter prob??)
ANSWER : Italiano:

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