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Re: Installation of Fusing Drum for LaserJet 2840 Printer
If you are trying to replace the fuser in your HP Laserjet 2840 you need to know what you are doing. You need to have a certified technician remove your old fuser to have the new fuser put into the printer.
By not having this done correclty it could cause you further problems.
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The 2840 is a slightly different sort of machine when it comes to supplies. There is a main imaging drum unit which works for all four colors, and then there of course are the 4 colors. If the unit was asking for a drum unit then you should have instaled a Q3964A. It is entirely possible that your drum unit and black cartridge both expired at the same time, in which case, you need a black toner cartridge now.
Push the scanner release button(top front right side) That opens the scanner assembly.(it lifts up) Grab the drum handle and rotate the drum so that the handle is at the top Lift drum straight up and out of the printer. If you are installing a replacement, the animated directions are on the CD that came with the printer and I believe instructions come with the replacement drum.
The HP Color Laserjet 2840 Is a Very Good Reliable Printer. I'm curious if you are buying American made components or cheap components from some thrid world country sold at ahuge retailer. They really should stand behind their laser drums, but if they don't then shop over at www.officeinks.com or www.wowsuperdeal.com and Purchase American Made Toner Cartridges and Laser Drums. Office Inks has a 1 year satisfaction and quality guarantee and free return shipping if their ink, toner, drums, ribbons etc, don't make you happy. Only Ships USA Though.
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.
HP Color LaserJet 2820 and 2840 AiO Series Products - How to Replace the Imaging Drum
Replace the imaging drum
Push the scanner-release button to open the scanner assembly.
Figure 1: Example of scanner release button location
Open the top cover.
Figure 2: Example of top cover being opened
Grasp the imaging drum handle, and then rotate the drum until the handle is at the top.
The drum may be a snug fit. If needed, gently apply some force while rotating and removing the drum.
Figure 3: Example of imaging drum rotation
Lift the imaging drum straight up to remove it from the device.
Figure 4: Example of imaging drum removal
Remove the new imaging drum from its packaging.
Place the imaging drum on a firm surface, and then pull the orange rings to remove the
Figure 5: Example of shipping pin locations
Remove the orange shipping lock on each end of the imaging drum, and remove the two
orange shipping spacers.
Figure 6: Example of shipping lock and spacer locations
Remove the orange cover from the imaging drum.
Figure 7: Example of orange cover location
Do not touch the surface of the roller or expose the roller to light for an extended period of
time. Doing so could cause print-quality issues.
Align the arrows on the side of the imaging drum with the arrows inside the printer.
Figure 8: Example of arrow location
Lower the imaging drum into the printer, and then press it firmly into place.
Figure 9: Example of imaging drum installation