IBM 1220 - Manual (Page 102)

100
Supplies
What this message means:
At least one of the printer supplies requires attention. For example, you may have a toner
cartridge that is low on toner.
What you can do:
Press Menu to open the Supplies Menu and identify which supply item needs replacing.
Replace the appropriate printer supplies.
Tray <x> Empty
What this message means:
The specified tray is out of paper.
What you can do:
Load paper in the tray to clear the message.
See also:
Loading the trays
Tray <x> Low
What this message means:
The specified tray is low on paper.
What you can do:
Add paper to the tray to clear the message.
See also:
Loading the trays