Xerox 2510 developer calibration

[gitana1983]

Hello to everybody...
I have a Xerox 2510 to which we replaced the developer, it worked fine for a couple of days but then black spots came in.

I currently have a service manual for this machine but it skips some pages and apparently those cover the calibration that I need.

If anybody knows what is the developer calibration on this model I will greatly appreciate it!
Anything will help

[technogeek2009]

There is no density adjustment for developer on the 2510. Toner dispensing is controlled purely mechanically through the green lever along side the toner canister.

You mention spots appearing on the prints. Is the actual print darker than it should be? Are you certain that the toner you are using in the machine is compatible with the developer you installed? If the toner and developer are from different manufacturers, than that may be the source of the problem.