Question about OKI C3400n Laser Printer

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Toner Error I just changed the black toner drum for my OKI C3400 and the orange light is still on and the message error is saying the drum is near the end so i got anothe toner drum and it is still giving me the same message.

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Check to make sure that the sensors are clean and play around with the lock arms. Reset the machine and also download the utility from the oki service website to get exact error message. http://www.okic3400.co.uk/library/downloads/utilities/c3300c3400smv1115.exe

Posted on Sep 22, 2009

  • R. W. F. May 28, 2011

    You have to replace the sensor smaftchip to reset this printer - all toner cartridges have a chip (four cartridges).

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Nov 26, 2015 | OKI C3400n Laser Printer

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I have attempted to install 3 different black toner cartridges in my OKI c3400. I keep getting an error: "Toner cartridge lock lever is improper, drum missing, or toner sensor error. OFFLINE." I first...


The plastic shutter in the ID is fully or partially covering the toner sensor window.

Move the cover upward to allow for the sensor to become fully exposed prior to reinstalling the drum.

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Mar 16, 2010 | OKI C3400n Laser Printer

2 Answers

I have just put new toner cartridges in my Oki C3400 and I am getting the message of "toner sensor error"


look this solution http://my.okidata.com/oki-faq.nsf/FAQCentral/C384D8F74A91CF6E8525765E0065F636?OpenDocument
here the solution for your problem
i hope that it's helpful .... bye

Mar 05, 2010 | OKI C3400n Laser Printer

1 Answer

On an OKI C3400 the alarm lights blinks amber once a second. Cannot print status page. Replaced black toner and drum and re-installed other colors with no change.


THIS SOLUTION IS FOR AN OKI C3400N ONLY

As I'm sure you know, that blinking amber light indicates that:
  1. A toner lock is not fully "locked", or
  2. A toner is empty, or
  3. A drum is empty or near empty
The first question should be what does your C3400 monitor software tell you is wrong? I am assuming it said the black toner and/or drum needed to be changed - so you are fairly certain it is the black that is where the problem is? You may also have run the report from the printer that you get by pressing the "On-line" button and seen what is failing.

Assuming that is the case, and one or both of these signals an empty black toner, the problem may be in the new black toner cartridge. You can try this:
  1. Make sure the toner "lock" on all toners is fully engaged - assuming they are

  1. Open the top
  2. Lift out the entire black assemble including the toner and drum components.
  3. Keeping the assembly in the same orientation as you lifted it out, look on the RIGHT end.
  4. You should see two metal contact points, near the top at about the same level as the top of the toner.
  5. Just below these contact, you should see a small, rectangular hole - about 1/4" square.
  6. If you look in there you may see what looks like a small piece of black plastic that covers the hole from inside.
  7. If so, take a small pointed object (like a bent paper-clip) and gently reach in the hole and touch the small plastic piece on the inside that is covering the hole.
  8. You should be able to gently lift that piece of plastic UP.
  9. You may have to try lifting it a time or two, but it should stay UP if you have a new black toner installed.
  10. Once you have it UP carefully reinstall the assembly.
  11. Close the top and let the printer recycle.
  12. You may need to try this a couple of times to get the plastic to stay up on your new toner.
So you understand, here is what may be happening. That little piece of black plastic actually sits in line with a sensor in the printer that monitors toner / drum levels. When a new toner is placed in, that piece of plastic should be UP, so the sensor can monitor the level. As the toner gets used, the plastic liece gradually falls down until it completely blocks the sensor - indicating the toner is empty. That is how the monitoring software knows how to signal you.

This has worked for me several times - most especially when I tried using non-OKI OEM 'compatible" toners - but no guarantees this will help you

Jan 07, 2010 | OKI C3400n Laser Printer

3 Answers

OKI C3400 printer keeps saying


Okay, I had the same problem with my C3300. I phoned the people i purchased from and this is what fixed it for me:

looking directly at the printer:
-open printer
-remove drum in question (the drum is what houses the toner cartridge) in my printer it is black.
-look on the right side of the drum & there is a little (approx 5mm x 5mm) hole that has a little panel that opens- push this up to open it.

-replace drum close the top and try printing.

I had to do this 2 times before it worked, but it worked.

Jan 19, 2009 | OKI C5100n Laser Printer

1 Answer

I have an Oki C3400 that wont print


Could very well be the sensor window. I suggest looking at the side of the drum on the right side and pushing a q tip into the opening. heres an older model thats sort of similar instructions. http://www.c3400.co.uk/index.asp?menumode=0&content=sensorerror
Also you can check the exact error code here. http://www.okic3400.co.uk/library/downloads/utilities/c3300c3400smv1115.exe

Dec 10, 2008 | OKI C3400n Laser Printer

1 Answer

Oki c3400, Have replaced cyan toner 3 times now but still saying toner empty cyan


Check the window on the side of the drum where the sensor sits. It is on the right side of the drum and can be pushed open with a Q tip it is a small black window.

Nov 20, 2008 | OKI Printers & Copiers

1 Answer

Toner sensor error on an Oki C3520 Laser


Check the little switch/door on the right hand side of the drums.
This has worked successfully for me.

Symptom:
After replacement of a C3530 Image Drum, the message, "Toner Sensor Error" is displayed.

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Cause:
The plastic shutter in the ID is fully or partially covering the toner sensor window.




Resolution:
Move the cover upward to allow for the sensor to become fully exposed prior to reinstalling the drum.

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Oct 18, 2008 | OKI Electric Industry C3520 Laser Printer

1 Answer

New toners and drums, but flashing amber error light - won't print now


Have you replaced the printer drums? The status monitor will tell you what percent they are at (similar to the toner cartridge status). This fixed my problem before.

Jun 07, 2008 | OKI C3400n Laser Printer

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