HP Smart Tank Plus 650 User Guide - Page 144
To clean printhead contacts, longer than 30 minutes. This could result in damage to the printheads.
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To clean printhead contacts NOTE: ● Open the printhead latch and clean printhead contacts only when necessary; for example, if a printhead cannot be detected. The instructions here are only applicable in this section. After you have set up the printer, do not open the printhead latch unless instructed to do so. ● The cleaning procedure should take only a few minutes. Make sure that the printheads are reinstalled in the printer as soon as possible. It is not recommended to leave the printheads outside of the printer longer than 30 minutes. This could result in damage to the printheads. 1. Make sure the printer is turned on. 2. Close the output tray extender, and then close the output tray. 3. Open the front door of the printer. 138 Chapter 8 Solve a problem ENWW