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Re: Phaser 7300 asking for Imaging Unit
There is a spring on the waste section of the imaging unit that often pops off. When that happens it will not clear the replace imaging unit message. There is also a software patch on Xerox.com. Takes some searching to find.
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You can reset the imaging unit in two ways - either with a fuse, which will return the count to 100%, or in the hidden menu, which will not get you all the way to 100%. You'll find all the details about how to do it, and a lot more information about this printer here.
I had replaced the fuser - no improvement. I removed the fuser, imaging unit & transfer roller. CAREFULLY using a vacuum cleaner I cleaned all units and the internals of the printer, rotating the roller on the imaging unit to clean all parts. (Warning Place Imaging unit on paper as toner escapes) After a few test prints the page cleared and duplicate ghosting cleared.
the only thing I can suggest is to check the contacts that the imaging unit goes into, and i can also be the imaging unit itself. If i am not mistaken, you should be able to swap imaging units from another color just to see if the error goes away. But if this does not help, you will need to get it serviced. we have fixed these before, and its not a quick fix.
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:
Open the top cover.
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.
Identify the color of the toner cartridge to be replaced (Cyan, Magenta, Yellow or Black).
Move the orange lever on the toner cartridge to the right so that it unlocks.
Lift on the back side of the toner cartridge first, then guide the cartridge out of the printer.
Set the toner cartridge on paper to avoid any toner spilling.
Reseat the imaging unit:
Lift the imaging unit straight up out of the printer.
Line up the guide pins with the printer's frame and lower the imaging unit back into the printer.
Reinstall the toner cartridge:
Install the toner cartridge by guiding the front onto the new imaging unit first then lowering the back.
Move the orange lever on the toner cartridge to the left so it locks.
1. Contaminated or damaged Imaging unit contacts. - Remove and clean the contacts and inspect for damage.
TROUBLESHOOTING TIPS AND HINTS: Imaging Unit Failure message occurs because the printer cannot detect imaging unit motion, up-and-down. The Transfer Belt drives this motion, and the Drum Contact Assembly detects it.
1. Swap the Imaging Unit Cotact blocks between two imaging unit positions. If the problem follows the Contact block, it should be replaced.
2. Open the Top Cover and defete the top cover interlock switch. The color imaging units should raise in succession, cyan, magenta, then yellow, and then all lower at once. If one or more imaging units do not raise smoothly or drop prematurely then replace the Transfer Belt assembly.