Code :
- Code: C3
- Description: NVRAM Error (MCTL PCB)
- Code: C4
- Description: Engine Controller MCTL PCB Hardware Error
- Code: C7
- Description: Process Timing Clock Error (Main Motor Clock Error)
- Code: D1
- Description: Clutch Error of the Yellow Developing Unit
- Code: D2
- Description: Clutch Error of the Magenta Developing Unit
- Code: D3
- Description: Clutch Error of the Cyan Developing Unit
- Code: D4
- Description: Clutch Error of the Black Developing Unit
- Code: D5
- Description: HPSI Signal Error (Retract Error of Black and Yellow Toner Cartridge)