HP Color LaserJet 2820/2830/2840 All-In-One - User Guide
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...and remove any orange shipping tape inside the ADF. See Service and support or the support flyer that the power switch is on ? Verify that the scanner bulb is connected correctly to 60 seconds. For more information, ... are properly installed. (See Managing supplies.) Look at the controlpanel messages and follow the instructions to failed power source, cable, switch, or fuse. See Changing the automatic document feeder (ADF). Scanner bulb does not light. Verify that the ADF cable... automatic document feeder (ADF). If the scanner bulb does not light, contact HP Customer Care.
...and remove any orange shipping tape inside the ADF. See Service and support or the support flyer that the power switch is on ? Verify that the scanner bulb is connected correctly to 60 seconds. For more information, ... are properly installed. (See Managing supplies.) Look at the controlpanel messages and follow the instructions to failed power source, cable, switch, or fuse. See Changing the automatic document feeder (ADF). Scanner bulb does not light. Verify that the ADF cable... automatic document feeder (ADF). If the scanner bulb does not light, contact HP Customer Care.