User - Epson 1000 Reference Manual

If you are installing an imaging cartridge with a 6000-page life
span (the standard cartridge), set this option to NEW.
When you want to use an imaging cartridge whose life span is
different from the original cartridge's span (6000 pages), you
can set the appropriate toner amount setting in terms of pages.
When the display shows NEW, press ) .
Menu/submenu
LIFE
Then press V until you reach the desired page range.
Press ) to set the page range.

USER

Note:
You do not need to change this setting if you are using only one
computer. If you are using more than one computer with your
printer, see "Sharing Your Printer" in Chapter I.
The USER option on Level 2 gives you the choice of two
settings to specify how the printer's memory is used,
AUTOSENSE or INDIVIDUAL.
With AUTOSENSE the printer automatically detects which
interface channel (parallel, serial, or optional) is receiving data
and allocates all of the printer's available memory to that
channel.
Available options
5000 to 9000
(in 1000 page increments)
SelecType 4-27