Righty then, methinks I gots here an olde Canon MP730 (know). It's about 8 years old, and I'm tasked with getting it back up and running. It worked perfectly fine right until yesterday - when all of a sudden, a wild Error appeared. First things first; I do not have to actually fix it. If some component is permanently broken, fine!, as long as I know why it's broken, and which component, I'm satisfied. Symptoms: 1. I can (and do) access 'Print' and I print a document, just like any printer. Document is being sent to s-pool. 2. Says on computer that 'There has been an error!' 3. [Looks over at printer] eq. to POST code has appeared: "WRONG CARTRIDGE" I always have a load of different cartridges laying around. So I swap them all for the recommended genuine OEM Canon cartridges, just like new. "WRONG CARTRIDGE" I'm puzzled. So what should/can I do? I am very interested in hearing some TechSpot-members' thoughts. Also, I'm translating the error message, there is a chance that those who coded the printer in my language did so very badly (not uncommon...) - e.g. there is a possibility that the error message is actually supposed to be "Wrong Cassette." My goal: Preferably, get the printer back up and running. Secondarily, if unfixable, sit back and enjoy the error-reading on TechSpot . The printer has never been cleaned - so maybe I have to change the ink depository if there is one/some. (pardon for poor translation from my native tounge ).