IBM 1800409-001A - Manual (Page 113)

in an alphanumeric value.
Press the Next key to scroll forward through the options
in a menu or to scroll through characters available for
alphanumeric values.
NOTE: Always make sure the printer is idle and off line before
making configuration changes. If the printer is not idle,
jobs may be lost.
Chapter 4
P r i n t e r C o n f i g u r a t i o n 4 - 7