The printer has been working great. I love the output I get from it and really do not want to replace it. Recently it stopped printing light grey. I replaced the print head thinking it would remedy the problem, but even with a new print head I get not light grey. When I print a diagnostic page, the light grey block is completely missing. Lost as to where to go from here.
Several possibilities assuming both LG heads are not dead.
Do you hear a repeating pumping sound in the printer? Could be an LG cartridge that does not deliver due to a blockage in the cartridge itself or in the ink channel (less likely). Cart weight should be between 180 and 50 grams, the last when empty. It might be possible that the droplet counting and the feedback to the cart chip has not been correct. Never experienced that though.
Cleaned the head contacts + the head carriage contacts for the LG head? This should normally trigger an error signal though.
Print a very light grey area. If there is no pumping done then one of the wires in the flat cable could be broken or the head carriage board has a problem. I would expect an error signal for the board though, happened to me at least and replaced it. Of a Canon iPF8300 printer I know that when the flat cable is weared off at its underside then the LM channel does not print. With my Z3200-PS there was never a problem like that but that cable is resting and moving on the wide side of its cross cut. There is a problem that over time the Zxxxx flatcables do not move gracefully but vibrate, get kinks and even go sideways. I found a remedy for that but can imagine wires getting broken when not solved.
Met vriendelijke groet, Ernst Dinkla
"For every complex problem there is an answer that is clear, simple, and wrong." H. L. Mencken
