2901 is a support code documented for Canon PIXMA TR4720, Canon PIXMA TR4722. Alignment is waiting for the printed sheet to be scanned.
What this support code means
Alignment is waiting for the printed sheet to be scanned.
Applies to: Canon PIXMA TR4720, Canon PIXMA TR4722. Do not reuse the same code on an unrelated model.
What to try, in order
- Place the alignment sheet printed-side down at the indicated platen mark.
- Close the document cover and press Black or Color as instructed.
After each step, repeat the action that produced the message. If it clears, you can stop.
When to stop
Stop if the instructed check does not apply, access requires disassembly, or the error persists after the documented steps.
Do not buy a part from the code alone. Check the exact model and manufacturer's part list if a replacement is actually required.
Models covered by this source
Official sources
These links identify the source and its scope. Check the manufacturer page again before changing a printer setting or buying a part.
- Canon — TR4700 series support code 2901 Checked 2026-11-01; official full page
Useful next steps
Found a mismatch? Request a correction with the public source URL and exact model, without passwords or full serial numbers.