Question about HP LaserJet 2840 Printer

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HP 2840 Ghost printing in the bkg?

Just installed new image drum and the first page was fine, but the second page printed the first page in the background (but lighter). What can I do?

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That is called ghosting. This is typically caused by a worn or fatigued component inside the imaging drum unit called the primary charge roller (PCR). It is a small black rubber roller. If you are careful and confident you can clean this yourself, otherwise the drum unit needs replacing.

Please read in full before attempting.

!Do not touch the imaging components with your hands or allow any foreign matter (i.e. grease) to touch them either!

To clean the PCR you have you remove it from the drum. It is held in place above the actual imaging drum, just above the drum shutter. On either side you will see two screws down in the cartridge that need to be removed. Once they are out you simply retract the imaging drum shutter and remove the plastic bar above the drum. The PCR is attached to this plastic bar. I would recommend cleaning the PCR in place so as to not disrupt the conductive lubricate that should be in place. Use a lightly dampened, with ONLY steam distilled water, lint free cloth and gently wipe and grime off. Repeat with a clean section of cloth until the PCR is an even dark color. COMPLETELY DRY BEFORE RE-INSTALLATION. Installation is the opposite of removal, a magnetic tipped screwdriver will help. Good luck and email with any questions.

Posted on Jan 14, 2010

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Need to replace the drive gear assy.
if you are a printer tech. would be easy but if not then take it to a printer replace shop.

Posted on Oct 03, 2009

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Posted on Jan 02, 2017

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Supplies life
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My HP Laserjet 2840 is showing "replace supplies" in the display. There are 5 box/cylendar's that appear in the display and the last one has a solid black box box in it. I was able to go thru...


Thank you for contacting FixYa with your printer inquiry.
The low ink could definitely be the problem thats prompting the error. To begin troubleshooting print the supply status page and confirm the state of the various supplies. Follow the steps below:
Supplies Status page The Supplies Status page lists the remaining life of the HP print cartridges and the HP imaging drums. It also lists the estimated pages remaining, number of pages printed, and other supplies information. You can print a Supplies Status page from the device or the HP Toolbox. To print from the device, complete the following steps. 1. On the control panel menu, press MENU. 2. Use the button to select Reports, and then press ENTER 3. Use the button to select Supplies Status, and then press ENTER. Note Supplies information is also available through the HP Toolbox.
This page illustrates conditions of consumables for Toner Cartridges, Image Drums, Image Transfer Kits, and Fuser Kits. It also provides ordering information and methods for disposing of or recycling used supplies.
Supplies information is also available through the HP Toolbox.
Areas of Supply Status Page: 1. Print-cartridge area. This area contains a section for each of the print cartridges and provides information about HP print cartridges. This information includes the part number for each print cartridge, whether each print cartridge is low, and the life remaining for each print cartridge expressed as a percentage, as a graphic, and as the estimated number of pages remaining. This information might not be provided for non- HP supplies. In some cases, if a non-HP supply is installed, an alert message appears instead. 2. Imaging-drum area. This area contains the same information for the imaging drum that the print-cartridge area provides for the print cartridges. 3. Warranty Note. This section contains information about how the device warranty is affected when you use non-HP supplies. It also requests that you call the HP fraud hotline if a supply that is being detected as a non-HP supply was sold to you as a genuine HP supply. (See HP fraud hotline.) 4. Ordering Information. This section contains basic information about how to order new HP supplies. See Checking status and ordering supplies. 5. Recycling Information. This section contains a link to the website that you can visit for information about recycling. See Replacing and recycling supplies.
The product Support Manual is available from the below link:
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00341096/c00341096.pdf
If you have further questions just add comment to this link and we will gladly provide additional information and support.
Kind regards,
TF

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1 Answer

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Marks repeatedly appear at even intervals on the unprinted side of the page.

c00366165.gif Internal parts might have toner on them. The problem typically corrects itself after a few more pages. The paper path might need cleaning. Click here to go to the Print Defect ruler for more information.

Clean the device. The imaging drum might be low. Click here to go to the Print Defect ruler for more information.

Replace the imaging drum. The fuser might be damaged. Click here to go to the Print Defect ruler for more information.

Contact HP Customer Care Marks repeatedly appear at even intervals on the unprinted side of the page.

c00366165.gif Internal parts might have toner on them. The problem typically corrects itself after a few more pages. The paper path might need cleaning. Click here to go to the Print Defect ruler for more information.

Clean the device. The imaging drum might be low. Click here to go to the Print Defect ruler for more information.

Replace the imaging drum. The fuser might be damaged. Click here to go to the Print Defect ruler for more information.

Contact HP Customer Care hi at the link given below, click on it and locate the page (halfway down) where it states this
Marks repeatedly appear at even intervals on the unprinted side of the page.

Internal parts might have toner on them. The problem typically corrects itself after a few more pages. The paper path might need cleaning. Click here to go to the Print Defect ruler for more information.

Clean the device. The imaging drum might be low. Click here to go to the Print Defect ruler for more information.

Replace the imaging drum. The fuser might be damaged. Click here to go to the Print Defect ruler for more information.

Contact HP Customer Carehttp://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=ca&taskId=110&prodSeriesId=445194&prodTypeId=18972&prodSeriesId=445194&objectID=c00366102

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1 Answer

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