Dell 3115cn Service Manual page 392

Clutch and Solenoid name
(Diag. Code)
Black Drum Erase Lamp
(DO-3d)
Yellow, Magenta and Cyan
Drum Erase Lamp (DO-3f)
Version 2 2007.03.14
NOTE: This procedure is for the technical staff.
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) Open the Front Cover.
3) Cheat the safety Interlock System.
4) Execute the DO-3d.
5) Press the "Cancel" key to stop the LED lighting.
6) Remove the cheater and close the Front Cover.
NOTE: This procedure is for the technical staff.
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) Open the Front Cover.
3) Cheat the safety Interlock System.
4) Execute the DO-3f.
5) Press the "Cancel" key to stop the LED lighting.
6) Remove the cheater and close the Front Cover.
2 - 51
Chapter 2 Operation of Diag.
Confirmation procedure
Black Erase Lamp
Cyan Erase Lamp
Magenta Erase Lamp
Yellow Erase Lamp
Kmy02037KA
Kmy02038KA