| c500 error Pull out the transfer/drum unit assy ( 2 handles ) pull out assy far as it can go, look inside to the upper left inside copier, you will see a metal bar going across, this is called the registration unit assy, there are 3 optical sensors, 2 screws hold it in place deep in the back, 1 connector, remove 2 screws, and 1 connector, the unit will come right out.
Take a look at the shutters, make sure you have springs on 2 of the s8 and s9 sensors, also make sure there is not to much toner build up on the sensor windows, clean them, can of air works best, return back to machine, connector is a #$%& WITHOUT LONG ARMS.
Power on holding the 3 and the 6 button at the same time, wait for 15 seconds and let go, you will be in 36 mode, select process adjust, timing adjust, automatic registration adjust, and start.
you should be good to go after that.
colormethis |