Certain parts are labeled with a letter and number code. If you encounter any paper jams or errors, use these codes to locate and correct the problem.
| 1 | EXT. port |
| 2 | LINE port |
| 3 | AC inlet |
| 4 | Rear cover (D3) |
| 5 | Rear cover (E) (optional paper cassettes) |
| 6 | Rear cover (D1) |
| 7 | Auto duplex unit (D2) |
| 8 | Maintenance box |
| 9 | LAN port |
| 10 | USB port |
| 11 | Service USB port (do not remove sticker) |
