Question about Samsung SCX-4720F All-In-One Laser Printer

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Samsung SCX4720F has error message "no cartridge". I replaced the cartridge but it will not detect the cartridge.

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Try to clean cartridge contacts inside the printer, or make master reset in menu.

Posted on Oct 23, 2010

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U162 error on black ink cannon printer


This error occurs when printer fails detecting ink level or printer assume that no ink in the cartridge. We cannot use print, copy,scan, and fax function before the problem fixed. It's recommended for you to replace ink cartridge. To continue using the printer without replacing the cartridge we must deactivate ink level detection function. Be aware that printing in this condition can damage the printer while sending fax or scan is not problem.


If you need any technical help on printer then you can reach at http://www.vtechsquad.com/

This error occurs when printer fails detecting ink level or printer assume that no ink in the cartridge. We cannot use print, copy,scan, and fax function before the problem fixed. It's recommended for you to replace ink cartridge. To continue using the printer without replacing the cartridge we must deactivate ink level detection function. Be aware that printing in this condition can damage the printer while sending fax or scan is not problem.

This error occurs when printer fails detecting ink level or printer assume that no ink in the cartridge. We cannot use print, copy,scan, and fax function before the problem fixed. It's recommended for you to replace ink cartridge. To continue using the printer without replacing the cartridge we must deactivate ink level detection function. Be aware that printing in this condition can damage the printer while sending fax or scan is not problem.

Original source: http://ij-forum.blogspot.com/2008/12/error-message-check-ink-u162u163.html#ixzz2Cpr4Be1K

This error occurs when printer fails detecting ink level or printer assume that no ink in the cartridge. We cannot use print, copy,scan, and fax function before the problem fixed. It's recommended for you to replace ink cartridge. To continue using the printer without replacing the cartridge we must deactivate ink level detection function. Be aware that printing in this condition can damage the printer while sending fax or scan is not problem.

Original source: http://ij-forum.blogspot.com/2008/12/error-message-check-ink-u162u163.html#ixzz2Cpr4Be1K

Nov 20, 2012 | Canon PIXMA MX340 Wireless Office...

1 Answer

My fax machine (Samsung SCX4720F) is saying paper jam, there is no paper jam. I have taken out the paper and tryed cleaning the rollers and i'm still getting the error.


The problem is not in the rollers.
If you removed all paper and the paper jam error is still on, then the problem is with the paper sensor itself.

This might be reset by a service code (which I don't know) or the sensor may need replacing.

It is not a cheap machine, so you may want to spend some money servicing it.

May 11, 2011 | Office Equipment & Supplies

2 Answers

I have samsung ml 2010 printer. i always get the message install toner cartridge. but it has a lot of toner it. ihad open it and saw a lot of toner


there is a problem with the detection of toner, could be:
  • the toner cartridge not set in the printer correctly
  • the toner cartridge is faulty (replacing the cartridge may fix)
  • a part in the printer is faulty and is not detecting the toner, or toner cartridge
I'm not exactly familiar with where the toner is detected but you could use an 'air brush' to clean the printer, as perhaps the part that contacts with the cartridge is dirty. You could give the toner cartridge a little side-to-side shake as this may even out the toner and activate the part that detects the toner.

Oct 30, 2010 | Samsung ML 2010 Laser Printer

1 Answer

Received an error code 50c on my Dell printer


Regarding the Dell A940 "Error 50c"....the user guide doesn't seem to mention "Error 50c". They do, however, mention a "Cartridge Error" on page 52 of the manual. They claim this means that the printer has detected a short circuit (fuse/resister) in the cartridge. As you may or may not have noticed in the manual, this is what they recommend doing about it:

1) Press Power to turn the printer off.

2) Lift the printer cover/lid (scanner unit) until the scanner support holds it open.

3) Turn the printer on.
The ink cartridge carrier moves and stops at the loading position unless the printer is busy.

4) Remove the color ink cartridge.

5) Lower the printer (scanner unit) until it is completely closed.
If the error message displays again, replace the black cartridge with a new black cartridge.

If the error message does not display, repeat steps 1–3 and then go to step 6.

6) Reinstall the color cartridge and remove the black ink cartridge.

7) Lower the printer (scanner unit) until it is completely closed.

If the error message displays again, replace the color cartridge with a new
color cartridge.
If there is no error message (indicated by flashing lights), repeat steps 1–3 and then reinstall both ink cartridges.
8) Lower the printer (scanner unit) until it is completely closed.

If you get the error message again, while both cartridges are installed, replace both of the cartridges.

Basically, what they want you to determine is,....if the short circuit is with the "black ink" cartridge or the "color ink" cartridge and then replace the cartridge that has the problem.

Thanks for all the ideas and help ; )

Apr 27, 2010 | Dell A940 All-In-One InkJet Printer

1 Answer

Installed a black ink cartridge and the printer shows the message 'black cartridge missing' and also says 'cartridge error: error 50c'


Hi there Error 50c

Can only gave it a try.

Regarding the Dell A940 "Error 50c"....the user guide doesn't seem to mention "Error 50c". They do, however, mention a "Cartridge Error" on page 52 of the manual. They claim this means that the printer has detected a short circuit (fuse/resister) in the cartridge. As you may or may not have noticed in the manual, this is what they recommend doing about it:

1) Press Power to turn the printer off.

2) Lift the printer cover/lid (scanner unit) until the scanner support holds it open.

3) Turn the printer on.
The ink cartridge carrier moves and stops at the loading position unless the printer is busy.

4) Remove the color ink cartridge.

5) Lower the printer (scanner unit) until it is completely closed.
If the error message displays again, replace the black cartridge with a new black cartridge.

If the error message does not display, repeat steps 1–3 and then go to step 6.

6) Reinstall the color cartridge and remove the black ink cartridge.

7) Lower the printer (scanner unit) until it is completely closed.

If the error message displays again, replace the color cartridge with a new
color cartridge.
If there is no error message (indicated by flashing lights), repeat steps 1–3 and then reinstall both ink cartridges.
8) Lower the printer (scanner unit) until it is completely closed.

If you get the error message again, while both cartridges are installed, replace both of the cartridges.

Basically, what they want you to determine is,....if the short circuit is with the "black ink" cartridge or the "color ink" cartridge and then replace the cartridge that has the problem.

You may have to buy a new cartrige.
Please all I ask is call back and just gave a vote, it will gave me some satisfaction to know am helping some one, so I will keep on helping.
All The Best: Pineworks

Nov 06, 2009 | Dell A940 All-In-One InkJet Printer

1 Answer

I'm getting a message, : Left and Right Cartridge Incorrect.


if u feel cartridges are fine and installed properly then there can be only 2 reasons for the error.either the copper points that detect ur cartridge circuit are not clean and cannot detect ur cartridge, clean them with a damp tissue to remove any dust .it will solve ur problem if still it does not work then its a cable of the carriage which can be faulty. check it out if the cable is faulty replace it.

Dec 22, 2008 | Office Equipment & Supplies

1 Answer

Cartridge error


Dear customer,
According to Dell documentation, the Dell Personal Inkjet Printer J740 will display this error message if it detects a short circuit in one of its two ink cartridges. Solution:
To fix this problem, you’ll need to replace the faulty ink cartridge (it’s possible that both cartridges have a short circuit). First, press the Power button on the printer to turn it off and open its front cover. Turn the printer back on and wait for the ink cartridge to stop moving. Remove the color cartridge and close the front cover. If you receive the error message again, you’ll need to replace the black ink cartridge. Repeat this process for the color cartridge to test it for a short. If you continue to receive the error message, you’ll need to replace the color cartridge, too.

Please Rate this solution. Thank You..

Jul 10, 2008 | Lexmark Office Equipment & Supplies

2 Answers

LSU Error?


You will need to replace the Laser unit (LSU),

Samsung part number JC59-00018B

and the web site to order the US$ 94.82 LSU
http://www.samsungparts.com/part_detail.asp?catalog%5Fname=Parts+and+Accessories&product%5Fid=JC59%2D00018B&search%5Fmodel=SCX4720F

Nov 12, 2007 | Samsung SCX-4720F All-In-One Laser Printer

3 Answers

Samsung SF560.


Check if there is a fuse in place (usually fitted to the front edge of the cartridge) and always replace when refilling.

Aug 31, 2007 | Samsung SF-560 Plain Paper Laser Fax

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