Question about Lexmark E342n Laser Printer
The soution given is misleading, the Lexmark printers use a Photoconductive drum (photoconductor) or often abbreviated to PC.
They obey standard EP image formation process, as such the drum is charged by the charge roller, the charge is dissipated by the laser (striking the PC), toner is attracted to the PC where the charge is lost and the transferred to the media by the transfer roller. Standard 6 stage EP formation process
The reason the laser does not strike the paper directly to reduce charge, where is the charge going to go ? With the PC the charge tunnels vertifcally to the aluminium core, paper is an insulator so the process cannot work.
Anyway, when replacing the PC in the E342 you need to reset the PC counter.
Power the printer off
Hold the DIamond shaped button (return) and power on
release the button when "Performing self test" is displayed
Select "Reset PC count" and press Select, the counter will Zero.
If this does not work
Power up while holding Return button but have the front access cover open
Close the cover once "!" displays, you can print the menus by holding the select button then until they print out.
Posted on May 20, 2009
I do not know of any Lexmark Laser printers that contain a photo conductor.
Lexmark engines use a "Write Black" process. This means that the charge roller will charge the paper and the laser will discharge the area that it wants the toner to adhere to. At least I believe that it is a Write Black process.
Regardless of the process, there is no photo conductor. The imaging of the page is the function of the laser.
What exactly is the failure you are trying to solve.
Posted on May 13, 2009
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Posted on Jan 02, 2017
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