Code :

Code: C4E1
Description: Fuser pressure roller contact/semi-contact abnormality - Though the pressure roller is contacted, its position cannot be detected.
Causes: Pressure roller contact/release detection sensor Pressure roller contact/release motor LGC board
Remedy: Pressure roller contact/release detection sensor (S27, S28) • Sensor check (Perform the input check: 03-[FAX]ON/[2]/[G], 03- [FAX]ON/[2]/[H]) • Connector check (J1116, J1117) • Harness check Pressure roller contact/release motor (M13) • Motor check (Perform the output check: 03-272) • Connector check (CN353) • Harness check Fuser unit • Drawer connector check • Thermostat check • Unit check LGC board • Connector check (CN355, CN356) • Board check

Code: C4E2
Description: Fuser belt rotation detection sensor abnormality - The fuser belt does not rotate or incorrectly rotates.
Causes: Fuser belt rotation detection sensor Detection plate (rotor) Dirty/damaged Fuser belt Deformed/damaged Bushing of fuser belt drive shaft Worn Bushing of fuser drive unit Worn Drive plate Bend section broken Gear Teeth damaged, worn LGC board
Remedy: Fuser unit • Fuser belt rotation detection sensor check (Input check: 03-[ALL]OFF/[6]/[A]) • Connector check in the fuser belt rotation sensor • Harness check in the fuser belt rotation sensor • Rotation detection plate (rotor) check • Grease check in the gear (shaft / tooth flank) • Fuser belt check • Check if the bushing of fuser belt drive shaft is worn. • Fuser unit installation check (Check that the levers fixing the fuser unit are lifted up.) Fuser drive unit • Bushing check • Check that the drive unit is correctly installed (3 dowels). • Check that the drive metal plate is not broken. • Check that the gear is not damaged or worn. • One-way clutch check • Grease check in the gear (shaft / tooth flank) LGC board • Connector check (CN355, CN356) • Board check

Code: C550
Description: RADF I/F error: Communication error has occurred between the RADF and the scanner.
Causes: RADF board SYS board
Remedy: RADF board • Check if the harness connecting the RADF board and SYS board is disconnected or open circuited. • Check if the conductor pattern on the RADF board is short circuited or open circuited. • Connector check SYS board • Check if the conductor pattern on the SYS board is short circuited or open circuited. • Connector check

Code: C560
Description: Communication error between Engine-CPUs
Causes: LGC board
Remedy: LGC board Turn the power OFF and then back ON using the main power switch. If the same error occurs again, replace the LGC board.