| Code | Description |
|---|
| A1-1 to A1-32 | All indicate a paper path problem, etc. in the ADF. |
| A2 | ADF exit problems |
| A3 | Irregular size documents |
| A5 | ADF interlock |
| A6 | ADF single sheet document reset. |
| A7 | Platen interlock |
| A8 | ADF exit interlock |
| C1 | Tray 1 jam |
| C2 | Tray 2 jam |
| C3 | Tray 3 jam |
| C6-1, C6-2 | Jams related to duplex |
| C6-3 | Registration sensor, re tray 1 |
| C7-1, C7-2 | HCF feed problems |
| C7-3 | Tray 1 feed problem |
| C8 | Paper stays in tray or duplex or HCF |
| C9 | Bypass feed problem |
| E1-10 to E1-25 | Internal jam |
| E1-6 | Paper on registration sensor |
| E2 | Reset signal happened. Might read E-2 something else. |
| E3-30 to E4-14 | Exit jam |
| E3-6 | Exit jam |
| E4-10 to E4-14 | Inverter sensor not actuated. |
| E4-15 | Inverter sensor |
| E4-40 to E4-45 | Duplex entry sensor |
| E4-6 | Inverter sensor |
| E5 | Front door interlock |
| E6-1 | Tray 1 interlock |
| E6-2 | 2 tray or duplex interlock |
| E6-3 | HCF interlock |
| E7-2, E7-3 | Duplex interlock |
| E8-6 to E8-15 | Duplex entry sensor |
| F1-1 | Sorter entry sensor |
| F1-6 | Sorter exit sensor |
| F3 | Paper size not available for sort/stack |
| F5 | Sorter interlock |
| J1 | Add toner |
| J3 | Replace copy cartridge |
| J7 | Replace copy cartridge |
| J8-1 | Wrong copy cartridge installed |
| J8-2 | Copy cartridge EEPROM |
| L6 | Auditron or other counter problem |
| L8 | Platen glass temperature is too high |
| L9 | Communication problem between interimage erase/edge lamps and main board |
| U1-1 | Main motor drive problem |
| U2-1 to U2-4 | Scan home sensor |
| U3-1 | Lens sensor |
| U4-1 | Open fuser thermistor |
| U4-2 | Fuser did not warm up properly |
| U4-3 | Fuser temperature too high |
| U4-4 | Fuser problem. Staying on too long |
| U4-6 | High fuser temperature |
| U5-1 | Sorter bin home switch not activated |
| U5-2 | Sorter bin home switch stayed actuated |
| U5-3 | Sorter bin home switch |
| U5-4 | Sorter bin home switch |
| U6-1 | ROM problem |
| U6-2 | RAM problem |
| U6-3 | Low battery |
| U6-4 | Incorrect value in NVM. Reinitialize main board with code 20-96 |
| U8-1 to U8-6 | Problem with exposure lamp, lamp sensor, lamp board |
