Dell 3115cn Service Manual page 365

Sensor name (Diag. Code)
Interlock Switch (DI-7)
Yellow Toner Cartridge (DI-8)
Version 1 2006.11.21
1) Turn on the power and enter the Printer Diag.
2) Execute the DI-7.
3) Check the Switch
Operator Panel
4) Press the "Cancel" key to stop the test.
5) 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-8.
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
Gnb02006KA
Gnb02007KA