Question about Xerox Phaser 7400DN Laser Printer

Black Imaging Unit

I have replaced the black imaging unit in a phaser 7400 with another one which wasn't brand new. The printer doesn't recognise the fact that a newer imaging unit has been put in and still tells me I have to replace it. How can I get the printer to know that a new one has been installed?

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Anonymous Jan 04, 2008

I have had the same problem. However, I replaced our blackimaging unit with a new unit & the printer doesn't recognize the new one.
bhoida Mar 04, 2008

I just installed a brand new yellow imaging unit, however the printer is not resetting itself and is still telling me to replace it. HELP!
Anonymous Nov 19, 2008

I replaced the Black, Cyan & magenta imaging toner cartridge with new ones and the printer did not reset itself. It tells me that they are at near the end of life. What can I do to correct this?

1 Answer

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208 Answers

If the machine calls for a new unit, a new not used cartridge must be installed to clear the message

Posted on Dec 07, 2007

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1 Answer

I have tried using a new fuse to cause an imaging unit to reset on a Phaser 7400 but the fuse will not blow.

If the unit is remanufactured or if you know how, you will have to disassembly the imaging unit and replace the fuser that blowns or simply just solder it. http://www.uninetimaging.com/downloads/technical/xerox/english/Xerox_Phaser_7400_Reman_Eng.pdf
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The Service manual says:

The Drum Phase Sensor for the named Imaging Unit indicates that the drum is out of position.

Initial Actions:

Reseat the indicated Imaging Unit.
Cycle the printer's power.

after these steps it gets a lot more detailed and you would need to be an experienced tech to understand everything and follow the steps within a timely manner, if reseating the cyan imaging unit doesn't fix the problem, then you will have to call for service.

Hope that helps

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Xerox phaser 7400 giving error - replace imaging unit- what solution now?

Did it specify a color you should replace? The machine has 4 image units (CMYK) each with a different part#. Replacing them is easy, no tools required. Open the top door, lift out the entire image unit, move the toner over to the new unit, and lower the image unit. Here are the part #'s for the 7400 for each color. Iteminc.com has these online.
C - 108R00647
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https://www.office.xerox.com/partners/SBSF_Docs/SB710.pdf Hopefully this can help you.

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1 Answer

Printing

The Phaser 7400 starts at $2,799. see models and prices see cost per print Color: up to 36 ppm Black: up to 40 ppm First-page-out time as fast as 12 seconds 800 MHz PowerPC processor Maximum paper size: 12" x 18" All models come standard with 10/100Base-TX Ethernet connectivity Standard paper input capacity: 800 sheets Maximum paper input capacity: 3,000 sheets Finisher/stacker/stapler/hole puncher capable of handling up to 1,000 sheets Maximum duty cycle up to 150,000 pages per month What comes in the box show/hide contents Color toner cartridges (capacity: 9,000 pages each 1 ) Black toner cartridge (capacity: 15,000 pages 1 ) Imaging units (capacity: 30,000 pages per color 2 ) Waste cartridge (capacity: 30,000 pages 2 ) Fuser (capacity: 100,000 pages 2 ) Transfer unit (capacity: 100,000 pages 2 ) Finisher ships with 5,000 staples Power cord Software and documentation.

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2 Answers

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2 Answers

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