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Wayne, The ink drain tubes look a bit gummy at their open ends. I'm tempted to un-clip & lift out the drum, remove the ink tubes, & clean them out. Is that risky? For example, are the drum springs going to shoot pieces off once removed from the housing? Since one tube is black and the other...

Greetings, After removing the purge unit from our Canon S750 (which was flashing the purge unit error), turning the purge unit upside down, and removing the bottom cover from the ink pump, one of the lid gaskets was found all scrunched up in the corner (see below). It apparently came off...

Following up on the S750 purge unit troubleshooting, after the "stepping" motor was removed, neither the motor gear or the nylon "driven" gear look chewed up. Probably good news, since presumably replacement parts are non-existent. The photo below shows both, with the motor off & turned around...

ghwellsjr, The ink is a "generic". Not Canon. I'd have to do some digging to ID the source.

Greetings, Our Canon S750 purge unit makes a gear-slipping noise, is unable to move the (released) print head, and causes the purge-unit fault via alternating green/orange LED. After removing both top & bottom printer-case halves and powering the printer up, it still wasn't obvious why the...