• Code: CEA0
• Description: Revolver home position detection abnormality: It cannot detect that the revolver is at its home position.
• Remedy: Is the revolver home position sensor working properly? (Perform the input check: 03-[FAX]ON/[2]/[C]) NO 1. Check if the connector or joint connector of the revolver home position sensor is disconnected. 2. Check if the connector CN361 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the revolver home position sensor. 6. Replace the LGC board. YES 1. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board.

• Code: CEB0
• Description: Black developer unit lifting movement abnormality: The black developer unit does not move up or down normally (lifting cam does not operate normally).
• Remedy: Is the black developer lifting clutch working properly? (Perform the output check: 03-433) NO 1. Check if the connector of the black developer lifting clutch is disconnected. 2. Check if the connector CN362 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the black developer lifting clutch. 6. Replace the LGC board. YES Are the black developer contact position detection sensor and black developer contact timing detection sensor working properly? (Perform the input check: 03-[FAX]ON/[1]/[C], /[1]/[B] NO 1. Check if the connectors of the black developer contact position detection sensor or black developer contact timing detection sensor are disconnected. 2. Check if the connector CN361 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the black developer contact position detection sensor and black developer contact timing detection sensor. 6. Replace the LGC board. YES 1. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board.

• Code: CEC0
• Description: 2nd transfer roller position detection abnormality: The 2nd transfer roller does not contact/release normally.
• Remedy: Is the 2nd transfer roller contact clutch working properly? (Perform the output check: 03-435) NO 1. Check if the connector or joint connectors of the 2nd transfer contact clutch are disconnected. 2. Check if the connector CN345 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the 2nd transfer roller contact clutch. 6. Replace the LGC board. YES Is the 2nd transfer roller position detection sensor working properly? (Perform the input check: 03-[FAX]ON/[1]/[A]) NO 1. Check if the connector or joint connectors of the 2nd transfer roller position detection sensor are disconnected. 2. Check if the connector CN345 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the 2nd transfer roller position detection sensor. 6. Replace the LGC board. YES 1. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board.

• Code: CEE0
• Description: Transfer belt position detection abnormality (normal speed): The home position of the transfer belt cannot be detected.
• Remedy: If the error [CEE0] has occurred, check the transfer belt home position sensor-1. If the error [CEE1] has occurred, check the transfer belt home position sensor-2. Is there any stain or scratch on the reflection tape inside the transfer belt? YES Clean the transfer belt or replace it. Replace the cleaning pad if it is excessively stained. NO Are the transfer belt home position sensors-1 and -2 stained? YES Clean them. NO Are the transfer belt home position sensors-1 and -2 working properly? (Perform the input check: 03-[FAX]ON/[9]/[H]) NO 1. Check if the connectors or joint connectors of the transfer belt home position sensors-1 and -2 are disconnected. 2. Check if the connector CN361 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the transfer belt home position sensor-1 and -2. 6. Replace the LGC board. YES 1. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board.

• Code: CEE1
• Description: Transfer belt position detection abnormality (when decelerating): Reference position of the transfer belt cannot be detected.
• Remedy: If the error [CEE0] has occurred, check the transfer belt home position sensor-1. If the error [CEE1] has occurred, check the transfer belt home position sensor-2. Is there any stain or scratch on the reflection tape inside the transfer belt? YES Clean the transfer belt or replace it. Replace the cleaning pad if it is excessively stained. NO Are the transfer belt home position sensors-1 and -2 stained? YES Clean them. NO Are the transfer belt home position sensors-1 and -2 working properly? (Perform the input check: 03-[FAX]ON/[9]/[H]) NO 1. Check if the connectors or joint connectors of the transfer belt home position sensors-1 and -2 are disconnected. 2. Check if the connector CN361 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the wires of harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the transfer belt home position sensor-1 and -2. 6. Replace the LGC board. YES 1. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board.

• Code: CEF0
• Description: Revolver motor abnormality: Revolver motor is not rotating or revolver is not moving normally.
• Remedy: Is the revolver motor working? (Perform the output check: 03-450) NO 1. Check if the connector of the revolver motor is disconnected. 2. Check if the connectors CN435 and J434 on the DRV board are disconnected. 3. Check if the connector CN360 on the LGC board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor patterns on the DRV board and LGC board are short- or open-circuited. 6. Replace the revolver motor. 7. Replace the DRV board and LGC board. YES 1. Check if the conductor patterns on the DRV board and LGC board are short- or open-circuited. 2. Replace the DRV board and LGC board.

• Code: CF20
• Description: Toner density detection voltage abnormality: The output value of the color auto-toner sensor in printing is out of a specified range.
• Remedy: (1) Specify the developer unit with the abnormality by checking the setting values of 08-824-0 to 08- 824-2. (When the value is “1”, an abnormality occurs.) (2) Correct the defective section of the unit specified in (1) with the following procedure. Is the developer material transported properly? Is the form of magnetic brush is normal? NO 1. Check if the amount of the developer material is normal or any foreign matter is mixed in. 2. Correct the transport mechanism of developer material. 3. Check the polar position and correct if necessary. YES Is the color auto-toner sensor stained? YES Clean it. NO Is the color auto-toner sensor shutter solenoid working normally? (Perform the output check: 03-125/ 175) Is the color auto-toner sensor working? NO 1. Check if the connectors or joint connectors of the color auto-toner sensor shutter solenoid and color auto-toner sensor are disconnected. 2. Check if the connector CN356 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Replace the color auto-toner sensor shutter solenoid. 5. Check if the conductor pattern on the LGC board is short- or open-circuited. 6. Replace the LGC board. 7. Replace the color auto-toner sensor and perform “Enforced correction of color auto-toner sensor light amount (05-208)”. YES Is the color auto-toner sensor shutter opening position correct? (Perform the output check: 03-125/175) NO Adjust the install position of solenoid so that the sensor holder will touch and face the positioning component when opening the shutter. YES 1. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board. (3) When the correction is completed, reset the values of 08-824-0 to 08-824-2 from “1” to “0” to clear the abnormality.

• Code: CF30
• Description: Reference plate detection voltage abnormality: The output value of the color auto-toner sensor against the reference plate is out of a specified range at the light amount correction during an auto-toner adjustment or when a print job has finished.
• Remedy: Are the reference plate and color auto-toner sensor stained? YES Clean them. NO Is the color auto-toner sensor shutter solenoid working normally? (Perform the output check: 03-125/ 175) Is the color auto-toner sensor working? NO 1. Check if the connectors or joint connectors of the color auto-toner sensor shutter solenoid and color auto-toner sensor are disconnected. 2. Check if the connector CN356 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Replace the color auto-toner sensor shutter solenoid. 5. Check if the conductor pattern on the LGC board is short- or open-circuited. 6. Replace the LGC board. 7. Replace the color auto-toner sensor and perform “Enforced correction of color auto-toner sensor light amount (05-208)”. YES Is the color auto-toner sensor shutter closing position correct? (Perform the output check: 03-125/175) NO Adjust the install position of solenoid so that the gap between the sensor holder and stopper will be 1.0 mm when closing the shutter. YES 1. Replace the LGC board. 2. Replace the reference plate and perform “Initialization of color auto-toner sensor light amount correction target value (05-207)”.