HL-1112 FAQs & Troubleshooting HL-1112 Not your product? Sort by: Updated Date Popularity 2 Results 1. 26/02/2016 A message appears informing to "The optical photoconductor needs to be replaced. / The paper tray is almost empty. " on my Macintosh. 2. 30/09/2014 When I run the Firmware update tool or the I-FAX install tool, the "Program failed to run" message appears on my PC screen. What do I do? More FAQs Error Messages FAQs & Troubleshooting