Printed Pages are Solid Black on the Dell Multifunction Laser Printer 1815dn
Make a copy of a document and print a Windows test page to determine if the problem affects only a single function of the printer.
The problem does not occur on copies or the Windows test page: Check the print settings in the application being used. Some applications, especially image viewing or editing applications, have some settings for printing that can affect print resolution and color settings. Check for any print settings including print quality settings, paper size settings, and print modes. Examples of such settings are, but are not limited to, the following:
Fit to Page - Expands or reduces the size of an image to fit the printed page. This can seriously reduce image resolution.
Grayscale - Prints all colors in grayscale.
Photo Color correction - Enhances colors to be brighter on page than on screen to emulate color photo paper.
The problem occurs only when printing documents, copies print without problems:
Download and install the latest driver for the printer.
If the problem still persists, swap with a known-good communications cable (USB or network).
A known-good cable works, or is not available: Replace the Cable if it was originally purchased from Dell.
A known-good cable does not work: Replace the Printer Controller Board.