HP Deskjet 640C 1Using Your Printer, You need to, When these lights are

1Using Your Printer

Buttons and Lights

The two buttons on the front of your HP DeskJet printer let you turn the printer on and off, or to resume printing. The lights give you visual cues about the state of your printer.

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 switch to turn the printer on and off may cause premature printer failure.

When these lights are...		You need to...
Turned off and	turned off	Press Power to turn on the printer.
Steadily lit and	turned off	Send a document to the printer. The printer is in the
		ready-to-print state.
Steadily lit and	flashing	• If you just installed a print cartidge, make sure the
		cartridge is securely snapped into the printer with
		the arrow aligned with the dots on the top of the
		print cartridge cradle.

•Close the top cover of the printer if it is open.

•Check the lower IN tray to make sure it contains paper and that the paper is correctly loaded in the tray.

•Press Resume to clear the error condition. Then check your computer screen for any reported error message and corrective action instructions.

Flashing and	turned off		No action required. This indicates that either the
			computer is sending a document to the printer or
			that the printer is currently busy printing.
Flashing and	flashing		Press Power to turn off the printer. At the computer,
			cancel any documents awaiting printing. Press
			Power again to turn on the printer.
Steadily lit and		steadily lit	See the troubleshooting instructions in Chapter 4 of
			this User’s Guide. A problem exists with the printer.

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