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 | LAN port |
| 2 | USB port |
| 3 | Service USB port (do not remove sticker) |
| 4 | LINE port |
| 5 | EXT. port |
| 6 | AC inlet |
| 7 | Rear cover (D) |
| 8 | Rear cover (E) |
| 9 | Maintenance box cover (H) |