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  1. J

    Doesn't recognize ink cartridge

    The wall-power step is the part I'd underline — leaving it unplugged for a minute or two seems to clear a stuck carriage state better than a simple on/off cycle. On the contact cleaning, I'd add that the metal pads on the cartridge chip can look fine while the spring contacts behind them are...
  2. J

    Et-7700 No longer printing after print head cleaning

    The isopropyl point makes sense to me — I hadn't thought about it pushing ink in and then drying. On the nozzle check: it's not fully blank, there's a faint partial pattern on a couple of colors, which fits what you're saying about a film rather than a dead head. I'll check whether the cartridge...
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