Documents are printed in monochrome
Is Color Mode set to Monochrome, or Print Target set to CAD
Check 1
(Monochrome Line Drawing) in a Windows printer driver?
In the Advanced Settings of the printer driver, specify Color in Color Mode and try printing again.
Main Tab Description (Windows)
Is Color Mode set to Monochrome selected in the macOS printer driver?
Check 2
Set Color Mode to Color in the printer driver Quality & Media settings, and then print again.
Quality & Media
(macOS)
The print head nozzle may be blocked
Check 3
Print a test pattern to check the color ink nozzles and see if they are clogged.
Checking for Nozzle Clogging
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