Canon Perfect Binder A1 Troubleshooting Manual page 145

1-3) Remove the front cover (Right) in the same manner.
1-4) Pull the Waste paper unit. Remove the Waste paper box.
1-5) Release the lock of the Book stacking assembly and pull the Book stacking assembly.
1-6) Remove the jam removal knob, and remove the inner cover (Lower) with the 3 jam removal levers released.
- 9 screws
[Note]: To remove the inner cover (Lower), lift it so that the stopper is not stuck.
1-7) House the book stacking assembly.
1-8) Turn the buffer drive pulley [1] in the counterclockwise direction
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