Question about Xerox Phaser 7300DN Laser Printer

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Toner sensor board

I have been told my Phaser 7300 needs a new Toner sensor board. Is this something I can replace myself or is there calibration that a service technician needs to do?

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  • Ron928 Dec 06, 2007

    Thanks for your comment. We did talk to a Service tech. and they want 2 hrs of service time ($300) to install the board. I think I can install it, but after talking with the office people I think it may be just a bad flag. The error message is always on the Cyan toner, it is intermittent and most of the time it says that the toner cartridge should be replaced. Do you think it could just be a bad Flag?? If it was a bad board should we not get other toner color errors??

  • 280Z May 05, 2008

    I have a Phaser 1235 which has a similar setup with sensors above the toner cartridges.  The magenta mostly, but cyan and yellow once in a while. (U22, U23, U24 error, etc.) (toner cartridge missing) So I'm to understand that the sensor hammer bounces and causes a time out, (error) is that correct?  Thanks for your input.


    John S.   

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This may or may not help but I was able to greatly reduce the number of times the error occurs by taping a small piece of very soft foam rubber above the sensor flag with double sided tape. This will do for now until I can learn more about the repair.

Posted on Apr 14, 2008

  • vudutu Apr 14, 2008

    Forgot to mention there is a tech note on this I heard and it talks about a "bounce" of the flag sensor and a time out causing the problem.

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Before replacing the board, check the toner dispenser.
the dispenser is the black plastic assembly around the toner cartridge. If you remove the front cover, sort of brown, look at the dispenser auger, it is surronnded by a very soft plastic sleve.
I suspect most likely that dispenser or auger is the problem.
I would say that is the more likely problem, in the 80 pecent range.
It may just need vacuumed out.

Posted on Dec 20, 2007

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If you are comfortable taking apart your machine you could probably do it. The part can be ordered from a reseller online. The service manual for how to do it can also be downloaded from online sources. The service manual does not make a recomendation for any calibrations after replacing this part. Although a standard color calobration never hurts. But for the cost of the part, and one to two hundred bucks, you could get it fixed by a Certified Xerox Service Provider that will guarantee their work.

Posted on Dec 06, 2007

  • Craig Mac Dec 06, 2007

    Does it give a specific error number, or does it just say to replace the toner?

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Posted on Jan 02, 2017

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The Phaser 7300 is being shut down because of a wrong signal that the transfer unit is at the end of its life. The transfer unit is a month old on a unit that has medium usage. It should not be at the end...


I think you might have a Spring missing for the Waste Toner Full Sensor. Truthfully, it is really hard to describe in a few sentences.

It belongs in the frame wall under near where you have the white waste toner section of the Transfer Belt. This spring pushes a flag up that hits the Paper Entrance Sensor (yes, near the bypass tray)

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I have a phaser 7300 that asks for a transfer unit about every 3 weeks. It prints good until it asks for unit and then it will not print until I install a new one. I am ready to install the 4th unit but...


I think you might have a Spring missing for the Waste Toner Full Sensor. The machine tolerates the sensor status for 2K pages and then shuts it down.

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May 21, 2010 | Xerox Phaser 7300DN Laser Printer

3 Answers

The "Reseat Toner Cartridge" message keeps appearing, if I open and close the lid the message goes away and it seems to print normally.


There is a firmware issue that causes that problem.
You can download it from the Xerox.com site and upgrade your machine. The instructions on doing that upgrade are also on the site.
Go to Xerox.com. Then click Suport and Drivers, then enter 7300, then to drivers and downloads and scroll down to the firmware update.

Feb 10, 2010 | Xerox Phaser 7300DN Laser Printer

2 Answers

We have two printers and both of them have the following error command when we print. Reseat or Install Magenta Cartridge. This command is repeated on other colours at random


Issue could be caused by a couple of things. Could be the Toner Sensor Actuator's, located in the top cover. Could be the toner Sensor Board, also located in the top cover. Could be the Engine Controller Board.

Any one of these three can cause this issue. You can watch my tutorial video on how to replace the Toner Sensor Actuator's on YouTube. It's about 10 minutes long. Just search for Xerox 7300.

Nov 03, 2009 | Xerox Phaser 7300DN Laser Printer

2 Answers

Xerox phaser 7300 toner cartridge problems


Hi,
Sometimes on this machine as there is a lot of loose toner around it can cover over the sensors in the machine, what I would advise is to remove all the toner cartridges and check for the copper contacts on both the machine and under the imagining unit (which the toner is placed in). Once you have cleaned that away slowly close the lid and reboot the machine and it should return to normal. Its just toner getting caught up in the sensors. Follow the instructions below, when you remove the unit, lift it over your head to find the copper contacts and clean them, be careful not to spill toner everywhere. Good luck!

Reseating the imaging unit
    Remove the toner cartridge:
  1. Open the top cover.
    openthetop196x185.gif
    caution_image88x30.gif The imaging units are sensitive to light. Do not expose the imaging units to light any longer than necessary to remove it and cover it. Failure to follow these instructions may damage the imaging units.
  2. Identify the color of the toner cartridge to be replaced (Cyan, Magenta, Yellow or Black).
    identifycolor176x179.gif
  3. Move the orange lever on the toner cartridge to the right so that it unlocks.
    moveleverright204x202.gif
  4. Lift on the back side of the toner cartridge first, then guide the cartridge out of the printer.
    lifttoner186x204.gif
  5. Set the toner cartridge on paper to avoid any toner spilling.
    settoner364x186.gif
    Reseat the imaging unit:
  6. Lift the imaging unit straight up out of the printer.
    liftiu230x261.gif
  7. Line up the guide pins with the printer's frame and lower the imaging unit back into the printer.
    lineuppins210x267.gif
    Reinstall the toner cartridge:
  8. Install the toner cartridge by guiding the front onto the new imaging unit first then lowering the back.
    installtonercart284x241.gif
  9. Move the orange lever on the toner cartridge to the left so it locks.
    moveleverleft202x221.gif
  10. Clean the LEDs with the supplied wipe.
    cleanleds291x198.gif
  11. Close the top cover.
    closetop212x223.gif

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More help HERE

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8 Answers

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The problem is a crazy design in the printer itself! I've now found a reliable fix for this problem which is relatively easy to carry out. You will find the details of how to do it here :

www.michelsplace

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