Question about HP LaserJet 2840 All-In-One Printer
I have replaced the black print cartridge and the warning light will not go away. Also, I cannot get the printer to print in color.
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Posted on Jan 02, 2017
SOURCE: HP 2840
the carousel gears are out of sync - "off a tooth" and have to be realigned. i spent 3 days last week fixing this problem - it's quite a job, to say the least. my question - if you ever check for this answer - is: what were the circumstances when the problem first occurred? just after replacing a toner cartridge? if so, was it recycled cartridge?
Posted on Oct 25, 2007
In this case, actually it is not the Black toner that got depleted.
Here the message being displayed indicate that one of the color Toner supply
need to be replaced as it got depleted and currently the printer is printing in
Black and white using the Black toner cartridge.
in this case, to troubleshoot these issues please try performing the following and check for the results.
* 1. Check for the level of the toner cartridges:
a) Check from the HP Toolbox application. Here are the steps to be performed from your PC:
* Access the Toolbox software.
* Select the Status tab.
* Select the Device status option.
Here you can check for the supplies status in terms of the % remaining for each toner cartridges.
b) By checking the supplies status from the printer control panel display.
On the printer display when printer is in Ready mode the supplies status can be checked from the supplies level indicator. Each toner cartridge and the Imaging drum level will be indicated by a bar which varies according to the level of the supplies present.
c) Print the supplies status page from the printer.
* On the printer control panel menu, press Menu .
* Use the (Right Arrow) button to select Reports, and then press Enter .
* Use the (Right Arrow) button to select Supplies Status, and then press Enter .
If any of the color toner cartridges and the Imaging drum have a low supply level replace them with genuine HP print cartridges.
The part numbers of the consumables are as follows:
* Black print cartridge - Q3960A
* Cyan print cartridge - Q3971A
* Magenta print cartridge - Q3973A
* Yellow print cartridge - Q3972A
* Imaging Drum - Q3964A
Posted on Oct 23, 2009
SOURCE: 2840 only prints on right side
If you are a bit adventurous and a bit patient, you perhaps can fix this yourself, and not require any disassembling. It worked for me on a similar 'carousel' unit... hp2550L.
For extra info, check this post out. http://www . fixyourownprinter . com/forums/laser/40284 (remove spaces)
If you look closely at the spot where a toner cartridge slips into a slot of sorts, you might see left side aligned and right side just a little off of 'good alignment' for that slot. What I did is to pull on the top of the black-plastic gear. Pull it toward the center of the printer.
There is a small, white gear at the very top of the black gear (not easy to see at first). By this pulling and bending of the black-plastic gear, you can get the gear teeth free of the white gear --- for just a moment. Just enough for the gear teeth to free-up and find their proper place. It doesn't take much.
When done, take a breadth and relax. Turn power off/on, and try it out.
Posted on Jun 08, 2010
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