When the screen comes up, if you are prompted for a Diag.Continue holding down these buttons and turn the printer's power on. While the printer is off, hold the 4, 5 and 6 number buttons.If the printer is still not printing in color from the operator panel, continue using the following steps:.Follow the directions in: Download Driver and Firmware Updates for Your Dell Laser Printer to uninstall and reinstall the print driver and update the printers firmware.If it still is not printing in color we will need to continue to the following steps. If the image now prints in color the issue has been resolved. If 'Grayscale' is selected click on the drop down and select 'Color' then click Apply. Make sure the Output Color drop down that Color is selected. If 'Grayscale' is selected, select 'Color' and click Apply. Check next to Output Color that 'Color' is selected.Go to Devices and Printers on your computer.If the printer is not printing in color over a USB or Network connection, we will need to check that the Output Color is set correctly in the Printer Driver by completing the following steps:.If the Color Test Page is still in black and white, proceed to section 5.If it is in color now, proceed to section 3. Once these settings are switched, print another Color Test Page.

On the operator panel, open the menu and navigate to Admin Menu > System Settings > Auto Color to Mono and set it to Off.On the operator panel, open the menu and navigate to Admin Menu > PS > Default Color and set it to Color.

On the operator panel, open the menu and navigate to Admin Menu > PCL > Default Color and set it to Color.

If it is in black and white, follow the below steps:

Print a Color Test Page from the operator panel.

If it is in black and white, check the settings in the application (Word, Acrobat, Outlook, etc.) to make sure the application is not set to print in black and white.

Print a Windows Test Page from the Printer Properties menu of the driver.

How to Troubleshoot Printing Color Prints over a USB or Network Connection on the C2660dn / C2665dnf / C3760n / C3760dn / C3765dnf Dell Laser Printers

Brother printer color test page