Maintenance, Replacing print cartridges, Refilling print cartridges – HP Deskjet 3420 Color Inkjet Printer User Manual
Page 57: Calibrating print cartridges, Automatically cleaning print cartridges, Manually cleaning print cartridges, Maintaining print cartridges, Maintaining the printer body, Removing ink from skin and clothing, Using the hp inkjet utility
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maintenance
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automatically cleaning print cartridges
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manually cleaning print cartridges
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removing ink from skin and clothing
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