MFC-790CW FAQs & Troubleshooting MFC-790CW 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? English Print FAQs & Troubleshooting