Canon imageRUNNER ADVANCE 8500 series Troubleshooting Manual page 24

[Service work]
When the above symptom occurs, follow the steps below.
The procedure starts from where the finisher is removed from the main body.
1) Open the front cover [1], and remove the link [2].
2) Remove the front cover [1].
3) Remove the face cover [1].
- 1 screw [2]
[Note] The face cover [1] is connected only to the staple finisher.
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