• Code: C475
• Description: IH power voltage abnormality (power supply abnormality when door is opened)
• Causes: Side cover interlock switch. LGC board FIL board IH board Power supply
• Remedy: Power supply • Check if the power voltage is normal.(Is the voltage during the operation ±10% of the rated voltage?) Side cover interlock switch • Connector check (J1008, CN354) • Harness check Fuser unit • Drawer connector check • Thermostat check • Unit check LGC board • Connector check (CN357) • Board check FIL board • Connector check (CN501, CN502, CN551, CN552, CN553, CN554) • Board check IH board • Connector check (CN561, CN562, CN563) • Board check Status counter 1. [0], [8] Power ON. 2. Key in “2002”, then press [START]. 3. Change the current status counter value (08-2002) "11" to "0" 4. Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.

• Code: C480
• Description: IGBT high temperature abnormality
• Causes: IH board cooling fan IH board LGC board Power supply
• Remedy: IH board cooling fan • Fan motor check (Perform the output check: 03-442) • Connector check (J1098) • Harness check IH board • Connector check (CN561, CN562, CN563) • Harness check LGC board • Connector check (CN357) • Harness check Status counter 1. [0], [8] Power ON. 2. Key in “2002”, then press [START]. 3. Change the current status counter value (08-2002) "14" to "0". 4. Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.

• Code: C481
• Description: IGBT thermistor breaking abnormality
• Causes: IH board LGC board Power supply
• Remedy: IH board • Connector check (CN357, CN561, CN562, CN563) • Harness check LGC board • Connector check (CN357) • Harness check Status counter 1. [0], [8] Power ON. 2. Key in “2002”, then press [START]. 3. Change the current status counter value (08-2002) "15" to "0". 4. Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.

• Code: C4B0
• Description: Fuser unit counter abnormality
• Causes: LGC board
• Remedy: LGC board • Check if the conductor pattern on the board is short circuited or open circuited. • Check if EEPROM is mounted. Status counter 1. Turn the power ON while [0] and [8] are pressed simultaneously. 2. Key in “2002”, then press the [START] button. 3. Reset the displayed current status counter value "1 to 4", "8", "17 to 21", "26", "28", "30 to 62", or "67 or more", then press [OK] or [INTERRUPT]. 4. Turn the power OFF and then back ON. Make sure that the equipment enters the normal status.

• Code: C4B1
• Description: Fuser unit voltage judgment abnormality
• Causes: LGC board IH board
• Remedy: LGC board • Connector check (CN357) • Board check IH board • Connector check (CN561, CN562, CN563) • Board check

• Code: C4C0
• Description: Fuser unit new/old detection fuse abnormality
• Causes: Fuser unit LGC board
• Remedy: Fuser unit • Connector check (J1101) • Harness check • Unit check LGC board • Connector check (CN355, CN356) • Harness check • Board check

• Code: C4D0
• Description: Fuser thermistor abnormality
• Causes: Thermistor LGC board
• Remedy: Fuser unit • Drawer connector check • Thermostat check • Unit check Thermistor • Connector check (J1101) • Check if the harnesses of the center and edge thermistor are open circuited. LGC board • Connector check (CN355) • Check if the conductor pattern on the LGC board is open circuited or short circuited. Cancel the service call After repairing the matter which caused the error [C4D0], turn the power OFF and then back ON to cancel the service call. However, the counter value will be stored until it is written over by the value of the other service call.

• Code: C4E0
• Description: Fuser pressure roller release abnormality - Though the pressure roller is released, 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