Actros User Manual

Moin, wanted to ask if someone knows where to get a confirmation instruction for an actros 1840 build year 1998 from the internet. someone a link I need at least a picture of the incurrent board with explanation to the switches and all other things….. there is also something you have to keep in mind when driving with this actros, macken? weaken? how does it work with the powershilt transmission? thanks already in advance mfg Marcel