Canon imagePROGRAF TX-3100 36" Printer with Basket - Manual (Page 1042)

5B21
Cause
A printer error has occurred.
What to Do
Make a note of the detailed error code (ECxx-xxxx) that appears on the touch screen, and then turn off
the power and unplug the power cord.
Contact your Canon dealer for assistance.
Detailed error codes
EC48-4001
1042