Question about Kyocera FS-920 Laser Printer

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Missing developer unit

Computer displays message "missing developer unit" Just the same - Printer is only 11 month old.

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  • jesuspresley Jun 03, 2009

    Though "Missing Developer Unit" is displayed, in most cases this problem can be resolved by replacing the toner catridge.

  • jesuspresley Jun 08, 2009

    That comment is the solution for in most cases. I don't know how to mark this "solved"

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Generally this printer can be separate into 4 major part: Printer body, Toner container, Developer unit and Drum unit. The developer unit is the unit where the toner container "mount" on it and it should be removed to allow cleaning task every time the toner container is replaced.
U may get this error message if the developer unit is not install properly after u replace a new toner container. Just lift the developer unit together with the toner container out of the printer and then insert back properly into the machine.

YBC (/\)

Posted on Oct 02, 2009

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2 Answers

How do i fix problem Add Toner


The Ricoh has toner and developer. When the developer is depleted it can not get to the right density when toner is added so the machine keeps saying to add toner. You need to clean out the developer unit and put in new developer. Depending upon your model you may need to install a drum and blade too. Ricoh technicians are trained to dissemble the unit and just replace the parts needed instead of getting a whole drum/developer unit. If you live in Southeast Florida Advanced business computers is a great source for help. Computer network repair, printer and copier maintenance repairs, leasing and supplies.

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The printer continues in Self Test, the printer is stuck at this point as it tries to continue to cycle through the power up.


Try to power on the printer without the toner kit and the waste toner box. If the printer stacks again at self test. Next step.... remove one part at time and check if the printer displays any message. First remove the developer unit and power on the machine (normal message "Missing Developer Unit"). Then pull out the fuser unit and power on the machine (normal message "Close Rear Cover"). And finally, remove the Drum Unit and power on the printer (normal message "Call Service 7410").
If the printer still stacks at Self Test, then that is not a good sign. Try to upgrade the printer' s firmware (system + engine). There is a possibility to go further from Self Test.
If it does not, then you have to replace the main pwb.

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Error on display call service 7402:0005942


The machine is not detecting the cyan developer unit . I would first try reseating the unit or replacing it.

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Uninstall the program from your computer. Plug in your printer first replace with new cartridge making sure to remover the film on the cartridge Then plug in patch cord to computer, program should reinstall if need be you may have to have your disk that comes with the printer. Hope this works, Printers are going for very cheap I would suggest buying a new one if this does not work.

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Sharp mx-2300N printer error maintenance required code vk


VK means black developer has reached end of life. You can safly carry on using the copier with this message displayed but over time the copy quality may slowly degrade. You will need to call a Sharp authorized dealer to replace the developer in the developer unit.

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1 Answer

Error message: invalid toner yellow


If the toner is empty it will display this message and the only way I know of getting rid of it is to replace the cartridge. They do make refill kits with extra chips so you can cut the old one out and sticky tape another on. As for a clearing code I am unaware of one for this unit as the information is store in the toner cartridge.

Sorry

Jan 06, 2009 | Samsung CLP-600N Laser Printer

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Printer stopped printing in the middle of a doc


Have checked the ink cartridge to see if it is empty? Sometime the the inki will run out and not display on the motitor. Have had this happen to one of my friends and that was the problem. Hope this helps. Bud

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1 Answer

Unit 11 laser polygon motor failure


Most likely, all the problems you are experiencing are being caused by a bad laser motor assembly. We can send you a motor assembly for the laser unit and you can change it out yourself, however, we will have to charge for the entire unit since it makes one laser unit worthless. You would save on shipping that way. Aligning the lasers is a little tricky, but doable. The manual can be downloaded at: www.lpscomputer.com/ec/Phaser_7700_Service_Manual.pdf
The parts can be ordered at: http://www.lpscomputer.com/p-3060-1-116-1110-00-laser-unit.aspx

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1 Answer

Missing developer unit


Generally this printer can be separate into 4 major part: Printer body, Toner container, Developer unit and Drum unit. The developer unit is the unit where the toner container "mount" on it and it should be removed to allow cleaning task every time the toner container is replaced.
U may get this error message if the developer unit is not install properly after u replace a new toner container. Just lift the developer unit together with the toner container out of the printer and then insert back properly into the machine.

YBC (/\)

Jun 03, 2008 | Kyocera FS-920 Laser Printer

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