Canon NP6251 Service Manual page 796

Note:
When the self-diagnosis has turned on, you can reset the machine by turning it off
once.
If the RDF is out of order, disconnect the lattice connector on the RDF side, open
the RDF, and set the original on the copyboard glass to continue to make copies.
COPYRIGHT © 1997 CANON INC.
Download service manual and resetter printer at http://printer1.blogspot.com
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
11-265