Can you keep using it?
Can you keep using it?
Contact customer support if any of these apply
- !1871 remains after the cassette is fully inserted.
- !The cassette rails or seating points no longer line up correctly.
What to check first
Step-by-step checks
- 1
Safe first step
Push the cassette fully into the printer until it sits normally.
Start with the official recovery step before moving on to parts or deeper servicing.
- 2
Consumable check
Check that the paper stack is aligned and not stopping the cassette from closing.
- 3
Safe first step
Retry after the cassette is seated squarely.
Background
What this message usually means
Canon uses support code 1871 when the TR4500 series detects that the paper cassette is not inserted correctly. This is typically a paper-source seating problem rather than a deep hardware issue.
Diagnosis
Likely causes
The cassette was left partially open or not pushed fully into position.
Paper loading shifted the cassette so it did not seat correctly.
The printer cannot confirm the paper source is in its normal position.
Service
When service or replacement is more likely
- -This is a paper-source seating issue first, not a mechanics failure.
See also
Related codes in this family
Source notes
Canon's official 1871 page says the cassette is not inserted correctly and directs users to seat it fully before continuing.
Built around Canon TR4500-series official support-code guidance. Exact wording can vary a little by regional model naming, but the support-code meaning stays close across the family.
Printer error codes can vary a little by firmware, region, and exact model variant. Use this guide as a family-level starting point and stop if the next step would require disassembly or service-mode changes.
Known family variants: TR4520, TR4522, TR4527, TR4530, TR4540, TR4550, TR4551, TR4560, TR4570, TR4570S, TR4580, TR4590, TR4595
Last reviewed: 2026-04-12
Reference: Open reference