Canon PC980 Service Manual - Page 341

CHAPTER 11 TROUBLESHOOTING 1 Pickup Assembly Cause Cassette Copy paper Copy paper DC controller PCB, Pickup clutch Registration roller drive assembly Vertical path roller paper sensor (PS4) Pickup roller, Vertical path roller, Roll Step 1 2 3 4 5 6 7 Checks Does the problem occur when the cassette is selected as the source of paper? Is the cassette set correctly? Is the copy paper curled or wavy? Try paper recommended by Canon. Is the problem corrected? Does the pickup roller of the pickup assembly of the selected source (cassette, manual feeder) rotate during a copying run? Does the registration roller operate normally? Does the vertical path roller paper sensor operate normally? YES/NO Action NO Go to step 5. NO Set the cassette correctly. YES Replace the copy paper. Instruct the user on the correct method of storing paper. YES Ask the user to use recommended paper. NO See "Pickup fails" for the source of paper in question. NO See "The registration roller fails to rotate." NO Replace the sensor or the lever. YES Check the roller for wear and deformation, and the roll for attachment. 11-76 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)