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There is no way to actually "reset" the counter. IF your MP170 has a
RESUME/CANCEL button, Press and hold this button for about 7 seconds to
bypass the counter (The PAGE FEED button will work for some other
models). If your printer doesn’t have this button, you may bypass the
counter by turning the printer OFF. Now hold down the RESET and turn
the printer ON. Keep holding the RESET until the printer boots and
initializes. When the display says, "INK VOL UNKNOWN" you may release
the RESET and begin printing in the usual manner. You may need to start
the printer in this manner each time, or the printer may remember this
setting. Canon was
experimenting during this time so some of the same models have
different buttons and bypass tricks. Hope this helps.
The ink collector should be found underneath where the cartridges normally rests. Put some tissue paper on the ink padand let it absorb the ink. You might have to repeat the procedure a few times to get rid of all the ink.
Something that worked for me, I opened the Conon MX310. took out both cartridges, and for 10 seconds I held the Reset. put the cartridges back in, closed the lid, and again, for another 10 seconds held the reset. SLOW seconds. this reset, ink levels recognised,, and it's working as it should be.
I had the same problem too. Brand new unit and 5100 error comes on after power up. There is nothing jaming the ink cartiage, and it only moves a little bit to the left then jams back to the right. I can't even load in new ink cartiages. It's going back to the shop today.
lads ye're all I work in an 'ink place' and the u051 fault is a fault indicating that the offending cartridge is electrically dead, this is caused by the clever little program in the canon machine that writes info to the cartridge to make it'dead' so it cant be re-used ! possible solution is to get refilled before printer thinks it empty !!