Dell 2135cn Color Laser Printer - Manual (Page 204)

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Installing the Toner Cartridges and Print Head Device (PHD) Unit
Installing the Toner Cartridges
Installing the PHD Unit
Installing the Toner Cartridges
1. Open the side cover.
2. Completely pull out and remove the four ribbons.
3. Press and slide the blue latches of the four toner cartridges to the locked position.
4. Close the side cover.
CAUTION: Before performing any of the following procedures, read and follow the safety instructions in your Product Information Guide.
NOTICE: To protect the drums of the Print Head Device (PHD) against bright light, close the front cover within three minutes. If the front cover remains
open for more than three minutes, the print quality may deteriorate.
NOTICE: Ensure that nothing touches or scratches the surface (black-colored film) of the belt unit. Scratches, dirt, or oil from your hands on the film of
the belt unit may affect the print quality.