Recently purchased a Unit Imaging Transfer Roller unit; now I get a message that indicated the imaging unit needs replacing. Assume this is the drum located at the bottom of the unit. Do these two items normally go out at the same time? Why would it not indicate that I needed to replace both items. The cost of the two items may be prohibitive; just purchase a new HP printer for less cost???
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Some toner may have
spilled in the printer. If so, you will need to clean it out. Also, the toner cartridge may be defective and letting too much toner out at
one time, the solution is to replace
the toner cartridge.
First you open the left side door, then press the button and lift the top cover, the transfer unit is the first on top with a handle and levers to release. The drum unit is under that also with blue levers to release.
I had this problem with my CLP-550, which is now 5 years old and is still on the starter toner cartridges. I found a solution at the following URL, where I at least found a picture of the imaging unit: http://pcproblemi.blogspot.com/2008/08/replacing-imaging-unit-on-samsung-clp.html
It must have been a contact problem on my imaging unit, because all I did was remove the unit and put it back.
You need to open the toner casing and the duplex unit. Then open the top housing, exposing the imaging unit. Open the plastic retaining levers at front and back of the imaging unit, and just lift it out (not too far), and then put it back.
I then closed the whole thing and it again worked perfectly.
Hope this helps someone.
If this IS a CLP-510, first make an information confirmation print.
Press MENU, then press ENTER, and ENTER again.
Look at the counter for the imaging unit, is it a low count confirming that you have indeed replaced it ?
If not you will need to reset the counter.
Check the counters for the toner cartridges, and check the capacity of the cartridge. On a CLP-510 the image counter for the toner is held on the chip on the cartridge (which also identifies the capacity of the cartridge).
There have been some faulty (oiginal Samsung chips), and of course re-manufactured cartridge chips could fail (many re-manufacturers don' test their cartridges before dispatch, they don't have the facility to do so without starting the count on the chip (or 'bowing' the reset fuse on a CLP-500 cartridge). VERY few re-manufacturers can test these cartridges without starting the count.
Sometimes the 'replace xxxxx toner' messages are caused by toner on the three contacts on the side of the cartridge, or their mating contacts inside the printer. Rarely, this can be caused by a faulty circuit board.