Question about Lexmark T640 Laser Printer
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Posted on Jan 02, 2017
I'm assuming you mean the maintaince counters...
Turn off the printer.
Press and hold the check and right arrow buttons on the front of the printer
Turn on the printer. Release the buttons when Performing Self Test displays. The message CONFIG MENU displays on the top line of the operator panel. Select Reset Maintenance Count from the Configuration menu. The message Reset Maint Cnt=Reset displays momentarily. Press Check to reset. When the reset operation is complete, the menu returns to the Printer Setup Reset Maintenance Count Screen. Scroll down to the Exit Configuration Menu and Press Select to Return to Ready status.
Posted on Jan 26, 2009
SOURCE: i have a lexmark t644
Posted on Feb 06, 2009
SOURCE: nvram mismatch
You have to install a brand new front display, the display board has a backup of the nvram, on boot the system board check the nvram and if it don't match it will return an NVram mismatch error
Posted on May 29, 2009
SOURCE: lexmark t644 error code 917.00
This error indicates that there is a charging problem with the transfer roller. You could start by cleaning the contacts for the transfer roller (power off printer first). The transfer roller is the black foam-like roller under the toner cartridge. Handle it with paper because the oils on your hand could damage it. To remove it, just pry under the far left side with a screwdriver. Lift and pull to the left to remove. If this does not fix it, then you have a more serious problem. It could be one of the arms or the HVPS.
Posted on Jun 03, 2009
Please follow the appended link to the Lexmark Technical Support website.
Posted on Nov 10, 2009
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