Canon Perfect Binder A1 Troubleshooting Manual page 198

2-11) Remove 3 screws from the right rail and demount the book stacking tray assembly.
- 3 screws
[Note] Hold the book stacking tray assembly with hand during the operation not to drop it.
2-12) Remove the right front cover.
- 2 screws
2-13) Remove the transfer lower cover.
- 4 screws
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