| 001 | Cover and Door Interlocks |
| 002 | Touch Screen / Control Panel |
| 003, 041, 045, 123 | Machine Communications |
| 004 | Drives |
| 005, 015 | Duplex Automatic Document Feeder (DADF) |
| 006, 061, 062 | Scanner, DADF and ROS |
| 007 | Paper Supply |
| 008 | Paper Feed |
| 009, 089 | Xerographics |
| 010, 058, 059 | Fuser, Fusing |
| 011 | Copy Exit |
| 012, 013, 047, 112 | Finisher |
| 016, 124, 127 | Configuration, Software, Memory, Hard Drives, Color Server, DFE |
| 018 | Network Communications |
| 020 | Fax, Software |
| 021, 121 | Foreign Interface |
| 022 | Job Timers |
| 024, 047 | Output Control |
| 024, 093 | Development |
| 026, 027, 033 | Job Parameters |
| 034, 035, 036, 133, 134 | Fax Communication |
| 041, 045, 057 | IOT Manager |
| 042, 043 | Motor, Fan, Sensor, Drive MQ |
| 045, 061 | ROS |
| 071 | Tray 1 Misfeed |
| 072 | Tray 2 Misfeed |
| 073 | Tray 3 Misfeed |
| 074 | Tray 4 Misfeed |
| 075 | Tray 5 Misfeed (Bypass Tray) |
| 077 | Paper Path Jam |
| 078 | Paper Handling High Capacity Feeder |
| 083, 084 | Fax Jobs |
| 089 | Regi Con |
| 091 | Drum Cartridge, XeroClean |
| 092, 093 | ATC, ADC, Toner, ProCon |
| 094 | IBT, BTR, Transfer |
| 102 | Job Queue |
| 103, 116 | Software |
- Engine Firmware Failure
- clicking noise
- horizontal black lines
- Toner error