• Code: CF10
• Description: Communication module SRAM reading failure.
• Remedy: MJ-1103/1104 1. Is the error recovered when the power of the equipment is turned OFF and then back ON? 2. Check if the MJ-1103/1104 is set as the specified finisher on the equipment. 3. Check if the harness connecting the converter PC board and the finisher controller PC board is disconnected or open circuited. 4. Check if the conductor pattern on the converter PC board is open circuited or short circuited. 5. Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. 6. Replace the converter PC board. 7. Replace the finisher control PC board. MJ-1103/1104 (When MJ-6102 is installed) 1. Is the error recovered when the power of the equipment is turned OFF and then back ON? 2. Check if the MJ-1103/1104 is set as the specified finisher on the equipment. 3. Check if the harness connecting the converter PC board and the finisher controller PC board is disconnected or open circuited. 4. Check if the harness connecting the hole punch control PC board and the finisher control PC board is disconnected or open circuited. 5. Check if the conductor pattern on the converter PC board is open circuited or short circuited. 6. Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. 7. Check if the conductor pattern on the hole punch control PC board is open circuited or short circuited. 8. Replace the converter PC board. 9. Replace the finisher control PC board. 10.Replace the hole punch control PC board.

• Code: CF90
• Description: Laser optical unit shutter abnormality.
• Remedy: 1. Take off the left center cover so that the connector relay plate and the shutter motor can be seen. 2. Is the shutter motor working? (Perform the output check: 03-201). * If it is working properly, proceed to 10. If not, check 3 to 9 below. 3. Check if the shutter motor connector CN214 (2-pin connector) is disconnected. 4. Check if the connector CN218 (8-pin connector) on the connector relay plate is disconnected. 5. Check if the connector CN327 on the LGC board is disconnected. 6. Check if the connector pins are disconnected or the harnesses are open circuited. 7. Check if the conductor pattern on the LGC board is short circuited or open circuited. 8. Replace the shutter motor. 9. Replace the LGC board. 10.Is the shutter motor working and the shutter plate moving? (Perform the output check: 03-201) * If it is working properly, proceed to 14. If not, check 11 to 13 below. 11. Check if the shutter motor and the shutter crank are assembled correctly, or not damaged. 12. Check if the shutter plate is assembled correctly. 13.Check if the shutter plate contacts with any parts inside the machine. 14.Is the shutter motor working, and the shutter plate reciprocates one cycle to stop at its original position. * If it is working properly, proceed to 25. If not, check 15 to 24 below. 15.Perform the input check for the shutter detection sensor (Perform the input check: 03-[All OFF]/ [7]/[D] and /[E]). 16.Manually move the shutter to see that it is “opened” when the crank is in the front, and it is “closed” when the crank is in the back. Therefore, check if the sensor detects as described in the table below.
  Abnormal H H Open H L Close L H Midstream L L
  17.Check if the detection sensor is coming off of or lift off from the plate base. 18.Check if the connector of the shutter status detection sensor (CN216, CN217) are disconnected. 19.Check if the detection sensor cut-out part of the shutter plate is deformed. 20.Check if the connector (CN327) on the LGC board disconnected. 21.Check if the connector pins are disconnected or the harnesses are open-circuited. 22.Check if the conductor pattern on the LGC board is open-circuited or short-circuited. 23.Replace the shutter status detection sensor. 24.Replace the LGC board. 25.Take off the LSU and check if there is no foreign matter between the shutter plate and the LSU cover. 26.Check if the conductor pattern on the LGC board is open-circuited or short-circuited. 27.Check the LGC board

• Code: CFA0
• Description: Media sensor output abnormality before paper reaching: The sensor output value before paper is reached to the media sensor is not normal.
• Remedy: (1) If these codes are recorded in the error history, the media sensor may have a malfunction. In this case check the following: (2) Is the connector of the media sensor disconnected or is any harness open circuited? (3) Are the arm of the media sensor and the bearing rollers operating properly? (4) Is the media sensor adjusted correctly? 3.9.1Adjustment of the media sensor position (5) If any abnormality was found in step 3 above or no abnormality was found in steps 2 and 4, replace the media sensor. * Note that printing is available even if the media sensor is in a faulty condition. The functions that the media sensor usually performs are then carried out as follows: If the media type of paper is set as plain paper, a media type (plain paper 1 or 2) set in advance in the code below will be used. 08-4599 0: Plain paper 1 1: Plain paper 2 (Factory default - JPD: 0, overseas: 1) Media type setting checking function will be disabled. Even if the media sensor is in a faulty condition, any message notifying this will not be appear. Check the condition with the error history.

• Code: CFA1
• Description: Media sensor output abnormality during paper passing: The sensor output value while paper is being passed is not normal.
• Remedy: (1) If these codes are recorded in the error history, the media sensor may have a malfunction. In this case check the following: (2) Is the connector of the media sensor disconnected or is any harness open circuited? (3) Are the arm of the media sensor and the bearing rollers operating properly? (4) Is the media sensor adjusted correctly? 3.9.1Adjustment of the media sensor position (5) If any abnormality was found in step 3 above or no abnormality was found in steps 2 and 4, replace the media sensor. * Note that printing is available even if the media sensor is in a faulty condition. The functions that the media sensor usually performs are then carried out as follows: If the media type of paper is set as plain paper, a media type (plain paper 1 or 2) set in advance in the code below will be used. 08-4599 0: Plain paper 1 1: Plain paper 2 (Factory default - JPD: 0, overseas: 1) Media type setting checking function will be disabled. Even if the media sensor is in a faulty condition, any message notifying this will not be appear. Check the condition with the error history.

• Code: E010
• Description: Jam not reaching the fuser transport sensor The paper which has passed through the fuser unit does not reach the fuser transport sensor.
• Remedy: 1. Check if there is any paper on the transport path or in the fuser unit. Remove it if there is. * If the error still occurs, check the following. 2. Is the fuser transport sensor working? (Perform the input check: 03-[FAX]OFF/[2]/[C]). * If it is working properly, proceed to 6. If not, check 3 to 5 below. 3. Check if the connector CN333 on the LGC board is disconnected from the fuser transport sensor or the harnesses are open circuited. Correct if any. 4. Replace the fuser transport sensor. 5. Replace the LGC board. 6. Check if there is any abnormality on the paper transport path in the fuser unit. Correct it if there is. 7. If jams occur on the back side in duplex printing, change the media type mode to the recycled paper mode, and then check if there are still jams. (When this type of jam occurs on heavily curled paper during duplex printing, the jam may be resolved by selecting the recycled paper mode.) 8. Change the 2nd transfer bias offset value as shown below and then check if there are still jams. Change the default value 5 of each code below to 6 or 7. Color: 05-2935 Subcode: 7 Black: 05-2937 Subcode: 7

• Code: E011
• Description: Transfer belt paper-clinging jam: The paper after the 2nd transfer is clinging to the transfer belt, or a paper jam occurred between the registration roller and the paper clinging detection sensor.
• Remedy: 1. Check if there is any paper clinging to the transfer belt or entering under the receiving tray. Remove it if there is. 2. Use the paper within the specification if the thin paper being used is out of specification. 3. Is the registration motor rotating? (Perform the input check. 03-128/528) 4. Check if the connector CN512 on the PFC board is disconnected from the registration motor or the harnesses are open circuited. Correct if any. 5. Replace the registration motor. 6. Replace the PFC board. 7. Check the state of the registration roller and replace it if it is deteriorated. 8. Is the paper clinging detection sensor working? (Perform the input check: 03-[FAX]OFF/[7]/[E]) 9. Check if the connector CN307 on the LGC board is disconnected from the paper clinging detection sensor or the harnesses are open circuited. Correct if any. 10.Replace the paper clinging detection sensor. 11.Is the transfer belt rotating normally? (Perform the output check: 03-116) 12.Is the transfer belt cleaning blade peeled? 13.Is the auger of the transfer belt cleaner unit locked? 14.Is the connector of the transfer belt motor disconnected? 15.Is the transfer belt motor broken? 16.Check if the tooth surface of the transfer belt drive gear is damaged. 17.Replace the PFC board. 18.Use the paper within the specification if the special paper whose reflection rate is lower than the specification is used. 19.If jams occur on the back side in duplex printing, change the media type mode to the recycled paper mode, and then check if there are still jams. (When this type of jam occurs on heavily curled paper during duplex printing, the jam may be resolved by selecting the recycled paper mode.) 20.Change the 2nd transfer bias offset value as shown below and then check if there are still jams. Change the default value 5 of each code below to 6 or 7. Color: 05-2935 Subcode: 7 Black: 05-2937 Subcode: 7

• Code: E020
• Description: Stop jam at the fuser transport sensor: The trailing edge of the paper does not pass the fuser transport sensor after its leading edge has reached this sensor.
• Remedy: 1. Open the jam access cover and check if there is any paper on the transport path. Remove it if there is. * If the error still occurs, check the following. 2. Is the fuser transport sensor working? (Perform the input check: 03-[FAX]OFF/[2]/[C]). * If it is working properly, proceed to 6. If not, check 3 to 5 below. 3. Check if the connector CN333 on the LGC board is disconnected from the exit sensor or the harnesses are open circuited. Correct if any. 4. Replace the fuser transport sensor. 5. Replace the LGC board. 6. Check if there is any abnormality on each transport path section of the exit of the fuser unit and the entrance of the bridge unit. Correct if any.

• Code: E030
• Description: Power-ON jam: The paper is remaining on the paper transport path when power is turned ON.
• Remedy: E030] Power-ON jam 1. Open the cover of the unit/area whose picture is flashing on the control panel and remove if there is any paper on the transport path. (Refer to the table below.) 2. Is the sensor in the jamming area working? (Perform the input check: Refer to the following table.) 3. Check if the connector on the PFC board is disconnected from the corresponding sensor in the jamming area or the harnesses are open circuited. Correct if any. 4. Replace the sensor. 5. Replace the PFC board. Relation between the jamming area and the corresponding sensors/covers. (If a jam is occurring in the ADU or LCF check the board in each unit.)
  Registration area paper feed cover Registration sensor 03-[FAX]OFF/[7]/[F] Paper clinging detection sensor 03-[FAX]OFF/[7]/[E] 1st drawer feed sensor 03-[FAX]ON/[1]/[G] Exit area Fuser cover Exit sensor 03-[FAX]ON/[1]/[B] ADU ADU ADU entrance sensor 03-[FAX]ON/[4]/[B] ADU exit sensor 03-[FAX]ON/[4]/[A] Feeding area (equipment) paper feed cover 2nd drawer feed sensor 03-[FAX]ON/[1]/[F] 3rd drawer feed sensor 03-[FAX]OFF/[2]/[D] 4th drawer feed sensor 03-[FAX]OFF/[8]/[D] Bypass unit Bypass unit Bypass feed sensor 03-[FAX]ON/[4]/[D] LCF LCF side cover LCF feed sensor 03-[FAX]OFF/[0]/[G] Bridge unit Bridge unit Bridge unit transport sensor-1 (Entrance sensor) 03-[FAX]OFF/[5]/[F] Bridge unit transport sensor-2 (Exit sensor) 03-[FAX]OFF/[5]/[D]