Code :
- Code: U4-1
- Display: “Fuser Failure\Press i”
- Description: Fuser High Temp U4-1: Fuser Fail/Power Off
- Causes: • Fuser Assembly • HVPS/Engine Logic Board • LVPS • Fuser Assembly Harness • LVPS Harness Assembly
- Code: U4-2
- Display: “Fuser Failure\ Press i”
- Description: Fuser Low Temp U4-2: Fuser Fail/Power Off
- Causes: • Fuser Assembly • HVPS/Engine Logic Board • LVPS • Fuser Assembly Harness • LVPS Harness Assembly
- Code: U4-3
- Display: “Fuser Failure\ Press i”
- Description: Fuser Overheat in Stand-by U4-3: Fuser Fail/Power Off
- Causes: • Fuser Assembly • HVPS/Engine Logic Board • LVPS • Fuser Assembly Harness • LVPS Harness Assembly
- Code: U4-4
- Display: “Fuser Failure\Press i”
- Description: Fuser Fails at warm-up U4-4: Fuser Fail/ Power Off
- Causes: • Fuser Assembly • HVPS/Engine Logic Board • LVPS • Fuser Assembly Harness • LVPS Harness Assembly
- Code: U4-5
- Display: “Fuser Failure\Press i”
- Description: Fuser Thermistor Failure U4-5: Fuser Fail/ Power Off
- Causes: • Fuser Assembly • HVPS/Engine Logic Board • LVPS • Fuser Assembly Harness • LVPS Harness Assembly
- Code: U5
- Display: “Fan Failure\ Power Off Now\ Press i”
- Description: U5: Fan Fail/ Power Off
- Causes: • Main Fan • Sub Fan • LVPS • HVPS/Engine Logic Board
- Code: U6
- Display: Engine Logic Board NVRAM Failure\ Press i
- Description: U6: NVM Fail
- Causes: • HVPS/Engine Logic Board