Using advanced function printing printers
You can operate Advanced Function Printing printers only under the control of a functional subsystem and managed by a print services facility (PSF). Except for a 3800-3, you cannot operate an AFP printer in compatibility mode; JES2 will not permit you to change the operation of an AFP printer to compatibility mode.
You can define a 3800-3 printer as running in either full-function mode and thereby capable of accepting “page” or “line” as the addressable unit of output or in compatibility mode with “line” as the addressable unit of output.