• Code: CDD0
• Description: Folding position sensor abnormality: Automatic adjustment of the folding position sensor can not be performed properly. [MJ-1025]
• Remedy:

• Code: CDF0
• Description: Initialization error of the offset tray : The home position of the separator cannot be detected when the power is turned ON.
• Remedy:

• Code: CE00
• Description: Communication error between finisher unit and puncher unit: Communication error between finisher controller PC board and punch controller PC board [MJ-1023/1024 (when MJ-6004 is installed)]
• Remedy: MJ-1023/1024 (When MJ-6004 is installed) Is the problem solved by turning OFF and ON the power of the equipment? YES End. NO Is the wiring between the finisher controller PC board and punch controller PC board correct? NO Correct the wiring. YES 1. Replace the finisher controller PC board. 2. Replace the punch controller PC board.

• Code: CE10
• Description: Image quality sensor abnormality (OFF level): The output value of this sensor is out of a specified range when sensor light source is OFF.
• Remedy: Is the connector of the image quality sensor, or the connector CN345 on the LGC board disconnected? Is the harness between the LGC board and the image quality sensor, or the harness between the LGC board and the switching power supply open-circuited? YES Connect the connector securely. Replace the harness. NO Is the output voltage from the 12V-power supply normal? NO Check the power supply system and replace the switching power supply. YES 1. Replace the image quality sensor. 2. Replace the LGC board.

• Code: CE20
• Description: Image quality sensor abnormality (no pattern level): The output value of this sensor is out of a specified range when the image quality control test pattern is not formed.
• Remedy: 1. Check if the transfer belt or transfer belt unit are securely installed. 2. Check for any abnormal stain caused by poor cleaning, large flaw or break on the transfer belt surface. 3. Check if the drum and the transfer belt are rotating. If any abnormality is found, correct any mechanical problem. Is the connectors CN345 on the LGC board disconnected? Is the connector of the image quality sensor disconnected or the surface of the sensor stained? Is the harness between the LGC board and the image quality sensor open-circuited? Is the shutter of image quality sensor opening and closing normally? Is the shutter damaged? <Procedure> 1. Take off the transfer belt unit so that the image quality sensor unit can be easily seen. 2. While pressing the digital keys [0] and [3] simultaneously, turn the power ON. 3. Key in “430”. 4. The shutter is opened and closed repeatedly by pressing the [START] button repeatedly. YES Connect the connector securely. Replace the harness. Clean the sensor. Replace the shutter if it is damaged. Replace the shutter solenoid if its operation is defective. NO Is the output voltage from the 12V-power supply normal? NO Check the power supply system, and replace the switching power supply. YES 1. Replace the image quality sensor. 2. Replace the LGC board.

• Code: CE40
• Description: Image quality control test pattern abnormality: The test pattern is not formed normally
• Remedy: (1) Use "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576)" to check the abnormal occurring condition for each color. (2) Check “Output value display of image quality sensor / Low-density pattern (05-391-0 to 3)” to check if the low-density pattern abnormality occurs for each color. The values under 320 for Y, M and C, and under 270 for K are defined as low-density pattern abnormality. Under 320 (Y, M and C) Under 270 (K) Low-density pattern abnormality Check the transfer belt. If the cleaning is poor, correct the transfer belt around its cleaning blade. 320 or above (Y, M and C) 270 or above (K) To (9) (3) Check “Output value display of image quality sensor / High-density pattern (05-390-0 to 3)” to check if the high-density pattern abnormality occurs for each color and identify the color which pattern is abnormal. If the value is 630 or above, it is defined as high-density pattern abnormality. (4) Set the values of “Image quality closed-loop control / Contrast voltage (08-556)” and “Image quality closed-loop control / Laser power (08-557)” to “0” (Invalid). (5) Perform “Enforced performing of image quality open-loop control (05-394)”. (6) Output the image quality control test pattern (04-270) more than one time and check the patch of the color identified in step (3) to see if the image is abnormal (Note). Abnormal Correct the items related to the image. Normal To (9) (7) Replace the image quality sensor. (8) Set the values of “Image quality closed-loop control / Contrast voltage (08-556)” and “Image quality closed-loop control / Laser power (08-557)” to “1” (Valid). (9) Perform “Enforced performing of image quality open-loop control (05-394)” and make sure it is completed normally. (Error [CE40] does not appear.) Then perform “Automatic gamma adjustment “. (10) Clear all "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576)". Note Abnormal image: Blank print, Solid print, White banding, Color banding, White spots, Poor transfer, Uneven image density, Faded image (low density), Uneven light distribution, Blotched image

• Code: CE50
• Description: Temperature/humidity sensor abnormality: The output value of this sensor is out of a specified range.
• Remedy: Is the connector CN361 on the LGC board or the connector of the temperature/humidity sensor disconnected? Is the harness between the LGC board and the temperature/humidity sensor disconnected ? YES Connect the connector securely. Replace the harness. NO 1. Replace the temperature/humidity sensor. 2. Replace the LGC board.

• Code: CE90
• Description: Drum thermistor abnormality: The output value of the drum thermistor is out of a specified range.
• Remedy: Is the connector CN361 on the LGC board, or the connector of the drum thermistor disconnected? Is the harness between the LGC board and the drum thermistor disconnected? YES Connect the connector securely. Replace the harness. NO 1. Replace the drum thermistor. 2. Replace the LGC board.