The manual is only available on the proprietary Xerox Edocs service software. So it's only available to authenticated service providers I belive??? If you are a service Tech contact your service manager or who ever manages you access to edocs and have them add it to your electronic document librarary....then ride the Bus my friend!
there may be back door ways to get it but it's not supported on this forum.
sorry good luck hope you get the resources you need through official channels.
Xerox Gaurds there service support documentation very carefully as its Intellectual Property.