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I have to know whether the machine was unpluged for a long period. If it's then you have to do a complete reset and start from scratch like it come out from the Uniwell. If you like you can give me a call @ 780-429-1262
Read it all here. Scroll about half the page, to:
WASTE TANK ALMOST FULL
or FULL ERROR MESSAGE PROBLEMThere is explained how to get rid of the error message very easy, and how to clean the waste ink pad manually. The latter seems not to be necessary, though.
Power off the printer. Unplug the
printer's USB cable for 5 seconds replug turn on the printer.
If that fails power off the PC and printer unplug the USB cable at
the PC and printer replug and power back on the PC. After PC is
fully booted turn the printer back on. If this keeps
reoccurring please replace the USB cable and or try different USB
The Konica Minolta 7145 have two different companies that made the print controller. If you have an older KM 7145 then you need the old Peerless Legacy driver. It's not on KonicaMinolta's website. You can use HP 5Si driver, but you won't have and of the options (ie finisher, fax, lcc).
I had the same problem.
Adding twain_32.dll to the Windowsfolder solved the problem.
For people who don't want to search for it: Look Here. Then you won't get this error but one saying to reinstall the printer driver. Just do it and the problem is solved.