Unknown Printer

How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

This error may occur since the image drum are not installed properly if the blue knobs are not locked. The error number 540 indicates a sensor error for the yellow image drum and 541 for the magenta image drum. 6. Place all image drums back into the device.
This error indicates that a sensor error has occurred in the image drum. If the error is not resolved after the toner cartridge and the image drum are reset according to the guidance on the device`s Operator panel, this may be because the belt unit is not properly installed so that the image drum moves upward.
Make sure the blue lock lever is in the up / locked position. Close the printer front cover and the 543 Toner Sensor Error will clear. If the error does not clear make sure the print cartridge is properly in position. If it still does not clear you need to trouble shoot the printer.
Turn off the printer and remove the toner cartridge. Look inside the printer in the area below where the cartridge goes. The toner sensor is on the right-hand side.
SMTP error 540 occurs because the recipient mail server rejects the emails from the sender.
This error indicates that the toner cartridge of the indicated colour is not properly installed.
Inspect the inside of the printer for the connection point. With a lint-free/dry cloth lightly wipe the contacts on both cartridges and printer to remove any dirt, or residue being careful not to cause any damage. Replace the cartridges in the printer. Power the printer back on.
Troubleshooting 500 errors

502 and 504 errors are related to a bad gateway, meaning that while the reverse proxy server is operational, something it needs to collect from the origin server is not working, or the connection between the reverse proxy server and the origin server is broken.

In computing, an error code (or a return code) is a numeric or alphanumeric code that indicates the nature of an error and, when possible, why it occurred.
1. Paper Jams. Paper jams are a common problem for printers, resulting in time-consuming and frustrating delays. It can occur when loose sheets of paper get stuck in the rollers or feeding mechanism of the printer.
a misprint or misspelling in a text.
Error: 544, 545, 546, 547. A color toner cartridge indicated on the screen is not installed. Make sure that the lever on the toner cartridge is fully turned and the protective tape is removed.
Check Your Internet Connection. According to Microsoft, the error code 0x8004de40 that shows “There was a problem connecting to OneDrive” on OneDrive means the app is having difficulties connecting to the cloud. And the major cause of this is a poor or unstable internet connection.
Error: 544, 545, 546, 547. A color toner cartridge indicated on the screen is not installed. Make sure that the lever on the toner cartridge is fully turned and the protective tape is removed.
Reinstall the printer driver. The machine is offline. Right-click the printer icon to open “Printer folder”, and then select [See print jobs]. In the dialog, select the [Printer] menu and then clear the check of [Use Printer Offline].

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

RESET OKIDATA TONER DRUM
ANSWER : HI there, oki image drums contain a fuse. You can reset them if they are working/printing ok by replacing the fuse. Hope this helps. The fuse is located inside the unit so is a bit fiddly.

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RESET OKIDATA TONER DRUM
ANSWER : Hi guys

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Error message reads remove and check right cartridge
ANSWER : You can try cleaning the contacts on the back of the cartridge and the ones that they contact in the printer. Other than that, you have to replace the cartridge. I once had one that did the same thing. I swapped the cartridge with another printer of the same model and both printers worked fine. I swapped them back and the original printer got the same error. The other printer had no problem with either cartridge. I swapped them back and left them that way.

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message error: ADF paper jam
ANSWER : There is a thin plastic arm that the paper pushes on. It is spring loaded. If it doesn’t return and unblock the sensor after the paper passes it, you get the paper jam warning. I’m guessing that is the spring you are referring to.

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Error Message 4F on MFC 210C
ANSWER : Basically this kind of error caused by loss of voltage on print head. If this is the case then I suggest to buy a new printer rather than replace print head. Print head might be too costly.

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Error message pump motor stalled
ANSWER : Hy,

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Density Shutter Error
ANSWER : I’ve never worked on one of those printers, but I have never, ever seen 1 valid solution for printer repair on fixya.com I read the replies there when I need a good laugh. Makes me wonder what the “techs” on that forum actually do for a living. It certainly couldn’t be printer repair.

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Error message to load paper and push OK, but not out of paper
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