I have this HP laser printer which senses the presence of a paper
butwhen I want to make a test print the machine does not pick the
paper. The printer will initialie alright but just @ the momment it
has to pick the paper all the motors ceases all the 3 LEDs on the
front will light up. no switch on the pannel will work @ this momment
unless the printer is unpluged. When it is pluged back the same
problem as stated above happens again.