User's Guide
Page 47
... Center. Close programs that you are performing a task. When the printer is turned on each printhead. ● Printhead latch and all covers are closed. ● Rear access panel (HP Officejet Pro K550) or duplex unit (HP Officejet Pro K550dtn/K550dtwn) is turned on. Press down firmly on for voltage ...correct color-coded slots. See Electrical specifications for the first time, it takes approximately 8 minutes to a functioning alternating current (AC) power outlet, and is locked into place. ● All packing tapes and materials are removed from each one to the printer. ...
... Center. Close programs that you are performing a task. When the printer is turned on each printhead. ● Printhead latch and all covers are closed. ● Rear access panel (HP Officejet Pro K550) or duplex unit (HP Officejet Pro K550dtn/K550dtwn) is turned on. Press down firmly on for voltage ...correct color-coded slots. See Electrical specifications for the first time, it takes approximately 8 minutes to a functioning alternating current (AC) power outlet, and is locked into place. ● All packing tapes and materials are removed from each one to the printer. ...