• Code: CF40
• Description: Light amount correction voltage abnormality: The light amount correction is not finished normally during an auto-toner adjustment or when a print job has finished, or the output value of the sensor is out of a specified range when the light amount correction has finished.
• Remedy: (1) Specify the developer unit with the abnormality by checking the setting values of 08-823-0 to 08- 823-2. (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 unit inserted properly? NO Insert it properly. YES 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. Replace the LGC board. 2. Replace the reference plate and perform “Initialization of color auto-toner sensor light amount correction target value (05-207)”. (3) When the correction is completed, reset the values of 08-823-0 to 08-823-2 from “1” to “0” to clear the abnormality.

• Code: CF50
• Description: Color auto-toner sensor abnormality: The connection of the color auto-toner sensor cannot be detected at the initialization, or the output value of color auto-toner sensor when the revolver starts rotating for initialization is out of a specified range.
• Remedy: Are the connector of color auto-toner sensor, joint connector and connector CN356 on the LGC board connected normally? NO 1. Reconnect the connectors. 2. Correct or replace if the connector pins are disconnected or harnesses are opencircuited. YES Are the color auto-toner sensor and reference plate stained? YES Clean them. NO Is the color auto-toner sensor shutter solenoid working normally? (Perform the output check: 03-125/175) 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. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the color auto-toner sensor shutter solenoid. 6. Replace the LGC board. 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. Check if the conductor pattern on the LGC board is short- or open-circuited. 2. Replace the LGC board. 3. Replace the reference plate and perform “Initialization of color auto-toner sensor light amount correction target value (05-207)”. 4. Replace the color auto-toner sensor and perform “Enforced correction of color auto-toner sensor light amount (05-208)”.

• Code: E010
• Description: Jam not reaching the exit sensor: The paper which has passed through the fuser unit does not reach the exit sensor.
• Remedy: Open the jam access cover. Is there any paper on the transport path? YES Remove the paper. NO Is the paper clinging to the transfer belt entering under the receiving tray? YES Take an appropriate action according to the countermeasure of [E011] . NO Is the exit sensor working? (Perform the input check: 03-[FAX]OFF/[7]/[H]) NO 1. Check if the connector of the exit sensor is disconnected. 2. Check if the connector CN358 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the exit sensor. 6. Replace the LGC board. YES Is the registration clutch working? (Perform the output check: 03-108/158) NO 1. Check if the connector of the registration 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 harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the registration clutch. 6. Replace the LGC board. YES Check the registration roller. Replace it if it is worn out.

• Code: E011
• Description: Paper jam caused by clinging to the transfer belt
• Remedy: Open the jam access cover. Is the paper clinging to the transfer belt? Is the paper clinging to the transfer belt entering under the receiving tray? YES 1. Remove the paper. 2. Use the paper within the specification if the thin paper being used is out of specification. Notes: 1. If the paper is remaining under the receiving tray, a scratched image occurs at printing in the color modes. 2. The paper smaller than B5 may easily enter under the receiving tray. NO Is there any stain or poor cleaning area on the transfer belt? YES 1. Clean the transfer belt. 2. Check the installation and operation of the transfer belt cleaner. NO Is the paper clinging detection sensor working? (Perform the input check: 03-[FAX]OFF/[9]/[H]) NO 1. Is the detection area of the paper clinging detection sensor dirty? 2. Check if the connector of the paper clinging detection sensor and joint connectors (3 pcs.) are disconnected. 3. Check if the connector CN331 of the LGC board is disconnected. 4. Check if the harness is open-circuited or the connector pin is disconnected. 5. Replace the paper clinging detection sensor. 6. Replace the LGC board. YES Replace the LGC board.

• Code: E020
• Description: Stop jam at the exit sensor: The trailing edge of the paper does not pass the exit sensor after its leading edge has reached this sensor.
• Remedy: Open the jam access cover. Is there any paper on the transport path? YES Remove the paper. NO Is the paper clinging to the transfer belt entering under the receiving tray? YES Take an appropriate action according to the countermeasure of [E011] . NO Is the exit sensor working? (Perform the input check: 03-[FAX]OFF/[7]/[H]) NO 1. Check if the connector of the exit sensor is disconnected. 2. Check if the connector CN358 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the exit sensor. 6. Replace the LGC board. YES Is the registration clutch working? (Perform the output check: 03-108/158) NO 1. Check if the connector of the registration 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 harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the registration clutch. 6. Replace the LGC board. YES Check the registration roller. Replace it if it is worn out.

• Code: E030
• Description: Power-ON jam: The paper is remaining on the paper transport path when power is turned ON.
• Remedy: Open the cover of the unit/area whose picture is flashing on the control panel. Is there any paper on the transport path? (Refer to the following table) YES Remove the paper. NO Is the sensor in the jamming area working? (Perform the input check: Refer to the following table.) NO 1. Check if the connector of the sensor is disconnected. 2. Check if any of the connectors on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the sensor. 6. Replace the LGC board. YES Replace the LGC board.
  Registration area Exit area ADU Feeding area (equipment) Bypass unit LCF PFP Bridge unit Test Mode/Input check 03-[FAX]ON/[9]/[E] 03-[FAX]ON/[3]/[H] 03-[FAX]OFF/[7]/[H] 03-[FAX]OFF/[8]/[H] 03-[FAX]OFF/[8]/[G] 03-[FAX]ON/[3]/[G] 03-[FAX]ON/[9]/[D] 03-[FAX]OFF/[5]/[G] 03-[FAX]OFF/[2]/[D] 03-[FAX]OFF/[4]/[D] 03-[FAX]ON/[0]/[C] 03-[FAX]ON/[0]/[A]

• Code: E090
• Description: HDD abnormality causes jam: Image data to be printed cannot be prepared.
• Remedy: (1) Check if the error is cleared by turning the power OFF and then back ON. (2) Check if the connectors of the HDD are disconnected. (3) Check if the connector pins are disconnected or the harnesses are open-circuited. (4) Replace the HDD. (5) Replace the SYS board.

• Code: E110
• Description: ADU misfeeding (Paper not reaching the 1st transport sensor): The paper which has passed through ADU does not reach the 1st transport sensor during duplex printing.
• Remedy: Open the jam access cover. Is there any paper in front of the registration sensor? YES Remove the paper. NO Is the registration sensor working? (Perform the input check:03-[FAX]ON/[9]/[E]) NO 1. Check if the connector of the registration sensor is disconnected. 2. Check if the connector CN345 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the registration sensor. 6. Replace the LGC board. YES Is the ADU clutch working? (Perform the output check: 03-222) NO 1. Check if the connector of the ADU clutch is disconnected. 2. Check if the connector CN340 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the ADU clutch. 6. Replace the LGC board. YES Check the rollers in the ADU. Replace them if they are worn out.