HP Deskjet 840/842/843c (English) Macintosh Connect * User's Guide - C6419-900 - Page 35
Storing Print Cartridges, Warning
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3 Using and Caring for Your Print Cartridges Storing Print Cartridges To maintain excellent print quality from your print cartridges: • Keep all print cartridges in their sealed packages, at room temperature (60-78˚ F or 15.6-26.6˚ C), until you are ready to use them. • Once installed, leave the print cartridges in their cradle at all times to keep them from drying out or becoming clogged. • If you store an unsealed print cartridge, do so in an airtight plastic container. • Do NOT unplug the printer until printing is complete and the print cartridge cradles have returned to their home position on the right side of the printer. The print cartridges will dry out if not stored in their home position. Warning Only use the Power Button on the front of the printer to turn the printer on and off. Using a power strip, surge protector, or a wall-mounted outlet switch to turn the printer on and off may cause premature failure. 28