Laserjet 6P Error Lights

[papuajimm]

I have tried to use my HP Laserjet 6P after six months of non-use and when I turn it on, the three lights on the fromt of the machine (Paper port one, paper tray 2 and the light above the IR) stay lit and nothing else happens.

Can anyone please tell me what's wrong with my printer and how to correct it? I would sincerely appreciate any assistance.

James