Canon imagePRESS 1135 Series Troubleshooting Manual page 156

14) Clean [A] part of developing assembly with vacuum.
15) Clean the both sides [A] of upstream sheet on the developing cylinder upper cover with lint-free paper.
16) Rotate the Developing Cylinder Drive Gear [1], check for any foreign matters on the Developing Upper
Cylinder [2], and remove them if any.
NOTE:
Reason: After the Developing Sleeve Unit separates from the Developing Assembly, the Developing
Cylinder Drive Gear [1] can be rotated manually.
<Work procedure 2-5>
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