Dell 3115cn Service Manual page 366

Sensor name (Diag. Code)
Magenta Toner Cartridge
(DI-9)
Black Toner Cartridge (DI-a)
Version 1 2006.11.21
NOTE: When performing operation for five minutes or longer with the
front cover open, remove all toner cartridges, and cover the drum to
avoid exposure to light.
1) Turn on the power and enter the Printer Diag.
2) Execute the DI-9.
3) Open the Front Cover
4) Check the Sensor.
Operator Panel
5) Press the "Cancel" key to stop the test.
6) Close the Front Cover.
NOTE: When performing operation for five minutes or longer with the
front cover open, remove all toner cartridges, and cover the drum to
avoid exposure to light.
1) Turn on the power and enter the Printer Diag.
2) Execute the DI-a.
3) Open the Front Cover
4) Check the Sensor.
Operator Panel
5) Press the "Cancel" key to stop the test.
6) Close the Front Cover.
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Chapter 2 Operation of Diag.
Confirmation procedures
Normal
Normal
Gnb02008KA
Gnb02010KA