Xerox Workcentre 7132 Color Copier. Works, but not great.

I bought this copier a few years ago and it does work. It prints the first 5 pages nicely, then the copies start to get lighter. I have tried some troubleshooting, but I am not an employee of Xerox so I decided to leave it. I don't know the age of the copier, but I have not used in 2 years. It comes with brand new (tape didn't hold closed) belt cleaner, waste container, 2 black toners, 2 yellow toners, 1 magenta, and 1 cyan.

eBay