error 49.00 laser jet 528

[needtoknow88]

hey, I have 2 m528 that are getting the same error 49. I have replace the formatter board and the hard drive. I don't have any USB or network wires connected to the printer I push the firmware 3 time and still getting the same error does anyone know what I can do  

[Repairatrooper]

First off, 49 errors are rarely caused by hardware issues. First step to diagnose a 49 error is to isolate the printer from any usb or network connections to computers. If the printer will start when isolate, there is not a problem with the printer and you need to look at the drivers you are using, any stale jobs in the print queue that may be corrupted. If the printer will not come to ready in isolated mode then remove any accessories such as additional memory or fax models to see if the device will then book. Always ensure that you are plugging directly into a wall socket on a circuit that does not have any high current draw devices like personal heaters or portable air conditioners as these high power devices will cause problems.