21F0
Cause
Cannot print with the current print settings because Force ink tank selection is set to Black only.
What to Do
When Force ink tank selection is set to Black only, you can print on plain paper, hagaki with bordered printing, and envelopes.
To ignore the Force ink tank selection setting and print with the current print settings, select OK on printer's touch screen. The printer starts printing.
To print using the Force ink tank selection set to Black only, press the printer's Stop button to cancel printing. Then change the print settings and retry printing.
