Ah ok so this is a model up from mine with the led lamps so i'm basing my info off of my GSR's which these were built from and should be very similar in most cases.
Have the lamp units been off, this looks like they are just not seated properly, on mine each lamp has an emergency stop fitted which will be triggered if the lamps are not in correctly, and this seems to be what its saying, are the bottom of the lamp units parallel to the belt or are they diagonal?
I'm not sure what you mean by processor was changed, can you give me any more information on this?