Code :
- Code: E1
- Description: Scanner or Exposure lamp
- Code: E2
- Description: Main drive or relay RA2
- Code: E3
- Description: Fuser
- Code: E4
- Description: Total counter
- Code: U1
- Description: Interlock or thermal fuse
- Code: U2
- Description: Key counter
- Code: U3
- Description: Oil (later machines)