Trouble Shooting
| Step | Cause | Solution | Parts |
| 2 | Duplex sensor is contaminated. | Replace the SBA234 | Duplex sensor (004-2714-9-SP) |
| 3 | Duplex roller failed. | Replace the duplex unit. | Pleaes contact service people: service@avision.com.tw |
| 4 | Main board malfunctioned. | Replace the main board MBA795 <Video Link> | Main board (004-3055-9-SP) |
