Dell 1600n Multifunction Mono Laser Printer - Manual (Page 133)

Wipe the surface of the scanner glass and ADF glass until it is clean and dry.
1 White Sheet
2 Document Cover
3 ADF Glass
4 Scanner Glass
3.
Wipe the underside of the white document cover and white sheet until it is clean and dry. 4.
Close the document cover. 5.
Maintaining the Toner Cartridge
Storing the Toner Cartridge
Store the toner cartridge in the original packaging until you are ready to install it.
Do not store the toner cartridge in:
Temperatures greater than 40° C (104° F)
An environment with extreme changes in humidity or temperature
Direct sunlight
Dusty places
A car for a long period of time
An environment where corrosive gases are present
An environment with salty air