Hi Guys

Got a weird fault with an HP Laserjet M5025 Printer. Print is light. it had an original hp toner in and was printing light so assumed toner was U/S Put in good quality new compatible and print exactly the same. It is legible on any print which is fairly bold but light print is poor. Any photocopies come out even lighter as would be expected. Have tried everything we know apart from stripping laser unit and cleaning however never had to do this on one of these machines. They never seem to give any problems apart from fuser drive unit and fuser itself. We have set density as high as possible but still no good. Any ideas would be appreciated

Thanks