Any business document will do. 12 point, any font, double spaced, 1 inch top bottom and both sides margins. Ricoh has or at least had Scan to OCR as...
I can't tell you which models, but once they go into an error code the Settings Menu may become inaccessible. And if you replace the printhead while...
You can check the parts catalogs between the different finishers. It may just be a difference in the part number of EEPROM in which case you might be...