| Code | Description |
|---|
| A1-11 | Original ready switch |
| A1-12 | Feed sensor |
| A1-1 to A1-32 | All indicate a paper path problem, etc. in the ADF |
| A1-21 | Original ready switch and document registration sensor or both the document feed sensor and document registration sensor |
| A1-22 | ADF registration sensor |
| A1-23 | Original did not reach ADF registration sensor quickly enough |
| A1-24 | ADF sensor stuck down too long |
| A1-25 | ADF sensor actuated at the wrong time during single sheet feed |
| A1-26 | ADF sensor not actuated quickly enough in sheet feed mode |
| A1-31 | In reverse, ADF sensor is not actuated soon enough |
| A1-32 | In reverse, ADF sensor is actuated too long |
| A2 | ADF exit problems |
| A2-1 | Original ready sensor and ADF exit switch are actuated or ADF feed in sensor and ADF exit switch are both actuated |
| A2-2 | ADF exit switch |
| A2-3 | ADF exit switch is not actuated on time |
| A3 | Irregular size documents |
| A3-1 | Wrong size original sensed in 1:1 mode |
| A3-2 | Wrong size original sensed in the 2:1 mode |
| A5 | ADF interlock |
| A5 | ADF interlock |
| A6 | ADF single sheet document reset. |
| A6-1 | Reset original |
| A6-2 | Reset sheet feeder |
| A7 | Document cover interlock |
| A8 | ADF exit interlock |
| C1 | Tray 1 jam |
| C1-2 | Paper feed problem in tray 1 |
| C1-3 | Paper does not reach registration |
| C2 | Tray 2 jam |
| C3 | Tray 3 jam |
| C3-1 | Paper feed problem from tray 3 |
| C3-2 | Paper feed problem from tray 3 |
| C3-3 | Paper feed problem from tray 1 |
| C6-1 | Duplex paper feed problem |
| C6-2 | Duplex and/or tray 1 paper feed problem |
| C6-3 | Paper feed problem from tray 1 |
| C7-1 | Paper feed problem from HCF |
| C7-2 | Paper feed problem from HCF on tray 1 |
| C7-3 | Paper feed problem from tray 1 |
| C8 | Paper stays in tray or duplex or HCF |
| C8-1 | Paper on tray 1 feed sensor |
| C8-2 | Paper on tray 2 feed sensor |
| C8-3 | Paper on tray 3 feed sensor |
| C8-4 | Paper on HCF feed sensor |
| C8-5 | Paper in duplex section |
| C9 | Bypass feed problem |
| C9-3 | Paper from bypass did not reach registration sensor quickly enough |
| 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 |
| E3-30 to E3-35 | Exit switch actuated too long |
| E3-6 | Exit jam |
| E3-6 | Paper on exit switch |
| E4-10 to E4-14 | Inverter sensor not actuated. |
| E4-10 to E4-45 | Paper did not reach inverter switch soon enough |
| E4-15 | Inverter sensor |
| E4-40 to E4-45 | Duplex entry sensor |
| E4-6 | Paper on inverter switch |
| 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 | Duplex inverter interlock |
| E7-3 | Duplex interlock |
| E8-10 to E8-15 | Paper on duplex feed sensor is not actuated soon enough |
| E8-6 | Paper in duplex |
| E8-6 to E8-15 | Duplex entry sensor |
| F1-1 | Paper did not reach sorter |
| F1-2 | Paper stayed on sorter feed sensor |
| F1-6 | Sorter exit sensor |
| F3 | Paper size not available for sort/stack |
| F5 | Sorter interlock |
| H2-1 | Communication problem between main board and duplex board |
| H2-2 | Side guard sensor problem |
| H3-1 | Communication problem between main board and HCF |
| H3-2 | Upper limit sensor problem on HCF |
| H6-1 | ADF size sensor |
| H6-2 | ADF nudgeer sensor |
| H6-3 | Belt drive motor does not have 24 volts. Black toner is empty, but 100 copies have been run without changing toner |
| J1 | Black toner is empty, but 100 copies have been run without changing toner |
| J3 | Replace copy cartridge |
| J3 | No copy cartridge (drum unit) |
| J7 | Copy cartrige must be replaced |
| J8-1 | Wrong copy cartridge installed |
| J8-2 | Copy cartridge EEPROM must be changed |
| L6 | Auditron or other counter problem |
| L6 | Key counter not installed |
| 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 | Scan home problem |
| U2-1 to U2-4 | Scan home sensor |
| U2-2 | Scan home problem or optics problem |
| U2-3, U2-4 | Scan home problem |
| U3-1 | Lens sensor problem |
| U4-1 | Fuser thermistor open |
| 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 | Exposure lamp problem |
| U8-2 | Communication problem main board and exposure board |
| U8-3 | Exposure lamp or exposure lamp board problem |
| U8-4 to U8-6 | Problem with exposure lamp, lamp sensor, lamp board |
