Second time refilling the cartridge I realized how inconvenient it has become not seeing how much ink is left in the tank. Google suggested several ways of reseting the left ink counters but no one worked for my MP-140. Finally I found the method. AFAIK this is a standard factory reset operation and is absolutely harmless:
- Disconnect the printer’s power cord.
- Press and hold down the power button while connecting the power outlet back.
- While still holding down the power button press the reset button twice.
- Release the power button.
- Wait until the printer boot-up is complete. Usually it takes up to 10-15 seconds. Copy counter display should come up with .
- Press "+" button to change the value on the display from 0 to 1.
- Press Colour button; this will light up two leds.
- Feed the printer with paper.
- Press the power button, the Colour button then the Reset button by turn. The device will print out a factory test page.
- After the test page is out the display returns to zero.
- Open the printer lid and remove the cartridges.
- With the printer still open, disconnect the power cord.
- Close the lid, re-connect the printer to the power and turn it on.
- Refilled cartridges may now be inserted back. The driver ink status window should display both cartridges full.
This method seems to be a complete factory reset which probably clears the waste ink absorber counter as well as the counter of the platen waste ink absorber.