Xerox 1235 - Manual (Page 66)

50 Phaser 1235 Color Printer
3. Place the toner cartridge/imaging drum assembly on a flat surface.
Avoid exposure to light for more than 10 minutes.
Caution
Be careful not to place the imaging drums (or the bottom of
the toner cartridge/imaging drum assembly) on the edge of
the table or an uneven or rough surface.
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