When setting fabric for edge sewing, the fabric edge indicator line does not appear on the LCD screen / the Fabric edge indicator line doesn't align with the edge of the fabric / the "Distance from edge of fabric" indication doesn't stabilize.

Despite selecting an edge sewing-compliant pattern, edge-sewing key appears in grey and cannot be selected.  

Though touching "OK" on "Attach vertical stitch alignment foot and edge sewing sheet" window, the same window still appears.  

How do I place edge sewing sheet?

How do I wind the bobbin?

The "Pivot" key can not be selected.

The stitch patterns cannot be selected.

"Not enough available memory to save the pattern. Delete another pattern?" message appears on the LCD. What does it mean?

"The carriage of the embroidery unit will move. Keep your hands etc. away from the carriage." message appears on the LCD. What does it mean?

"The bobbin thread is almost empty." message appears on the LCD. What does it mean?

"The pattern is too large for the extra large embroidery frame." message appears on the LCD. What does it mean?

"Lower the buttonhole lever." message appears on the LCD. What does it mean?

"The needle is down. Press the needle position button to raise the needle." message appears on the LCD. What does it mean?

"Finish editing the pattern before sewing the pattern." message appears on the LCD. What does it mean?

"Data volume is too large for this pattern." message appears on the LCD. What does it mean?

"No more patterns can be added to this combination." message appears on the LCD. What does it mean?

"This button does not operate when the embroidery unit is attached." message appears on the LCD. What does it mean?

The thread tension is incorrect.