IBM InfoPrint 20 User Manual page 236

4. Close the auxiliary tray.
5. Remove all paper from the paper trays.
6. Pull the 500-sheet tray out until it stops, then slightly lift it up and
remove it from the printer.
7. Remove the following options from the printer (if installed):
v 500-sheet paper trays (see "Removing 500–Sheet Paper Trays" on
v Duplex unit (see "Removing the Duplex Unit" on page 161)
v 2000-Sheet Input Drawer (see "Removing the 2000-Sheet Input
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InfoPrint 20: User's Guide -- CD Version
page 170 )
Drawer" on page 182)