Xerox COLORQUBE 8570 User Manual page 148

Troubleshooting
Probable Cause
Paper being used is not supported by the automatic
2-sided printing feature.
Your printer model does not support automatic
2-sided printing.
148 ColorQube 8570/8870 Color Printer
User Guide
Solutions
Use only media approved for automatic 2-sided
printing. For details, see Automatic 2-Sided Printing
Guidelines on page 93.
Print using manual 2-sided printing. For details, see
Printing a 2-Sided Document Manually on page 95.