HP Deskjet 6840 Maintenance

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There may be an amount of ink residue that builds up inside the device, so be thorough when sterilizing your printer.
However, regarding general maintenance, the ink cartridges and carriage are your main concern, as most other residue is normal build-up for this device.
When cleaning your printer, do not use alcohol or other platen cleaners, as this could severely damage your device.

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