What should I do immediately after turning on the printer?
Wait for the printer to initialize, and then on the control panel, set the language, the date/time format, and the time zone. For advanced configuration of network-connected printers, see the User Guide on the printer CD or go to www.hp.com/support/colorljE57540mfp.
From the official HP Color LaserJet Managed MFP E57540 Multifunction Printer manual, page 4
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