DCP-6690CW FAQs & Troubleshooting DCP-6690CW Not your product? Sort by: Updated Date Popularity 2 Results 1. 01.06.2023 Delete print jobs from the print queue. 2. 04.06.2014 When selecting grayscale printing in the printer driver, does this use only the black ink or all the ink cartridges to produce the grayscale image? Print FAQs & Troubleshooting