Xerox 1000

The Xerox 1000 was simply the product's last hurrah before being scrapped. Xerox hated scrapping anything which might still have some money making potential. 1000 was a major modification programme to existing 720s, long after production had ceased. Like the 420 mod. it was carried out both in the field and at refurbishing workshops. It took the best part of a day to apply and, in the field, needed to be carried out at weekends.

Much of the machine's internals were swapped with the contents of a large cardboard box, in an attempt to cure many of the 720s endemic problems. First Copy Out Time was also reduced, by fuser and cooling changes, and copy quality improved.
Sadly, apart from the last item out of the box - a new product label - there was nothing new for the customer to see. Some workshop produced 1000s did have their 3 doors resprayed light blue.

Thanks to Stuart Yearsley for providing this information.