Canon FAX-L1000 - Manual (Page 178)

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FAX-L1000 Chapter 3: Technical Reference
b-2) Document jam detection
The document edge sensor detects such document jams as pickup jams and document too
long errors.
A “pickup jam” means the document edge sensor cannot detect the leading edge of the
document within 15 seconds after document feeding begins.
A “document too long error” means that the document edge sensor cannot detect the
trailing edge of the document, even after the stepping pulses for feeding more than 39.4"
(1000 mm) of document have been transmitted.
NOTE
Document Jam Processing
If a document jam occurs, the fax stops the document read motor and ADF
operations, displays the error, and the Error lamp flashes in red.
For a pickup jam, “
CHECK DOCUMENT ” is displayed. For document too
long error, “ DOCUMENT TOO LONG ” is displayed.
If the document is being copied when a document jam occurs, the image data
scanned in and stored in memory are erased for all pages, and print
operations are stopped. Image data stored in memory when memory
transmission, or delayed transmission, or sequential broadcasting, is erased
from memory at the point when the jam is detected.