• Code: CE50
• Description: Temperature/humidity sensor abnormality. Temperature/humidity sensor abnormality: The output value of this sensor is out of a specified range.
• Causes: Temperature/humidity sensor LGC board
• Remedy: Temperature/humidity sensor Check the connectors and harnesses between the temperature/ humidity sensor and LGC board (CN342).

• Code: CE60
• Description: Drum thermistor Y abnormal. Drum thermistor-Y abnormality: The output value of the drum thermistor-Y is out of a specified range.
• Causes: Drum thermistor Y LGC board
• Remedy: Drum thermistor Connector and harness check of drum thermistor Y LGC board • Check the harnesses between the LGC board and the drawer connector for developer unit. • Connector check (CN340)

• Code: CE70
• Description: Drum drive switching abnormality. Drum drive switching abnormality: The drum switching detection sensor (S19) is not turned ON after the drum motor was rotated for a specified period of time.
• Causes: Drum switching motor (M11) Drum switching detection sensor (S19) LGC board
• Remedy: 1 Is the drum switching motor (M11) operating properly? (Perform the output check: 03-240) Yes 5 No 2 2 Drum switching motor (M11) Check the connector of the motor and joint connectors 3 Drum switching detection sensor (S19) Sensor check 4 LGC board • Connector check (CN339) • Board check 5 Is the drum switching detection sensor (S19) working? (Perform the input check: 03-[FAX]ON/[0]/ [E] (Highlighted in the color mode)) Yes 8 No 6 6 Drum switching detection sensor (S19) • Sensor, connector, joint connector check • Check if there is any foreign matter such as grease in the detection area of the drum switching detection sensor. 7 LGC board • Connector check (CN339) • Board check 8 Is the drum switching motor assembled in the drum drive unit able to be rotated smoothly by hand? Yes 10 No 9 9 Drum switching motor (M11) • While reinstalling the drum switching motor, push it so that its gear will slightly move away from the engaging gear. • Check the bracket in which the drum switching motor is installed. If it is deformed, replace it. 10 Is the drum switching guide able to be moved smoothly by hand after the drum switching motor has been removed? Yes 12 No 11 11 Drum switching motor (M11) Check if the slide area (guide, plate) of the drum switching guide is deformed or any foreign matter is attached to it. (Replace it if there is.) 12 LGC board Board check

• Code: CE71
• Description: Drum phase adjustment abnormality. Drum phase adjustment abnormality: Drum phase sensors (Color drum phase sensor (S43) and K drum phase sensor (S44)) are not turned ON after the drum motor was rotated for a specified period of time.
• Causes: Drum motor (M10) Drum drive unit • Color drum phase sensor (S43) • K drum phase sensor (S44) LGC board
• Remedy: 1 • Is the error cleared after the power is turned OFF and then back ON? • Is the drum motor (M10) operating properly? (Perform the output check: ON 03-101 / OFF 03-151.) * Check the operation after removing all process units (EPU (Y, M, C, K)). Yes 5 No 2 2 Drum motor (M10) Connector check 3 Drum drive unit Check if their drive gears are damaged or if they contact with the equipment. Correct if any. 4 LGC board • Connector check (CN332) • Board check 5 Rotate the drum of each EPU in the direction of the arrow once. (See the figure below.) If the rotation of the drum is extremely heavy or not smooth, check if the mechanism of the EPU is normal. Fig. 8-1 6 Rotate the drum with 03-101. Are the drum phase sensors (Color drum phase sensor (S43) and K drum phase sensor (S44)) are operating properly? (Perform the input check: Color 03-[ALL]OFF/[1]/[F] K 03-[ALL]OFF/[1]/[E].) Yes 9 No 7 7 Drum phase sensor • Check the connector of the drum phase sensors (S43, S44) and joint connectors • Check if there is any foreign matter such as grease in the detection area of the drum phase sensors (S43, S44). 8 LGC board • Connector check (CN332) • Board check 9 Drum drive unit Check if the drive gears are installed properly. (Check if the mark on each gear is aligned with the area of the punched mark on the frame.) 10 Actuator Check if the actuator is installed properly. 11 LGC board Board check

• Code: CE90
• Description: Drum thermistor K abnormal. Drum thermistor-K abnormality: The output value of the drum thermistor-K is out of a specified range.
• Causes: Drum thermistor K LGC board
• Remedy: Drum thermistor Connector and harness check of drum thermistor K LGC board • Check the harnesses between the LGC board and the drawer connector for developer unit. • Connector check (CN340)

• Code: CEC1
• Description: 2nd transfer roller contacting position detection abnormality
• Causes: Registration motor (M19) LGC board 2nd transfer roller position detection sensor (S29)
• Remedy: 1 Is the 2nd transfer roller's contact and release proper? (Perform output check: 03-239) Yes 4 No 2 2 Registration motor (M19) • Connector check • Harness check 3 LGC board • Connector check (CN332) • Board check 4 Is the 2nd transfer roller position detection sensor (S29) working properly? (Perform input check: 03-[ALL]OFF/[7]/[E]) Yes 7 No 5 5 2nd transfer roller position detection sensor (S29) • Connector and relay connector check • Harness check 6 LGC board • Connector check (CN337) • Board check 7 Mechanical section Sensor check 8 LGC board Board check

• Code: CEC2
• Description: 2nd transfer roller releasing position detection abnormality
• Causes: Registration motor (M19) LGC board One-way clutch gear at the end of the shaft 2nd transfer roller position detection sensor (S29)
• Remedy: 1 Is the 2nd transfer roller's contact and release proper? (Perform output check: 03-239) Yes 9 No 2 2 Is the registration motor (M19) rotating? Yes 5 No 3 3 Registration motor (M19) • Connector check • Harness check 4 LGC board • Connector check (CN332) • Board check 5 Is the 2nd transfer roller holding arm operated smoothly when it is pushed? Yes 8 No 6 6 2nd transfer roller pressure spring Check that the spring is installed properly (not running off the frame of the mold). 7 Parts surrounding the 2nd transfer roller Check if there is any damage or abnormality. 8 One-way clutch gear at the end of the shaft Replace it. 9 Is the 2nd transfer roller position detection sensor (S29) working properly? (Perform input check: 03-[ALL]OFF/[7]/[E]) Yes No 10 10 LGC board • Connector and relay connector check • Harness check 11 Parts surrounding the 2nd transfer roller • Connector check (CN337) • Board check 12 Mechanical section Sensor check 13 LGC board Board check

• Code: CF10
• Description: Communication module SRAM reading failure
• Causes: Converter PC board Finisher control PC board
  Converter PC board Finisher control PC board Hole punch control PC board
  Converter PC board Finisher control PC board
  Converter PC board Finisher control PC board Hole punch control PC board
• Remedy: MJ-1101 Main power switch Turn OFF the main power switch, then back ON. Setting of the equipment Check if the MJ-1101 is set as the specified finisher on the equipment. Converter PC board • Check the connectors and harnesses between the converter PC board and the finisher controller PC board. • Board check Finisher control PC board Board check
  MJ-1101 (When MJ-6103 is installed) Main power switch Turn OFF the main power switch, then back ON. Setting of the equipment Check if the MJ-1101 is set as the specified finisher on the equipment. Converter PC board • Check the connectors and harnesses between the converter PC board and the finisher controller PC board. • Board check Finisher control PC board • Check the connectors and harnesses between the hole punch control PC board and the finisher control PC board. • Board check Hole punch control PC board Board check
  MJ-1106 Main power switch Turn OFF the main power switch, then back ON. Setting of the equipment Check if the MJ-1106 is set as the specified finisher on the equipment. Converter PC board • Check the connectors and harnesses between the converter PC board and the finisher controller PC board. • Board check Finisher control PC board Board check
  MJ-1106 (When MJ-6103 is installed) Main power switch Turn OFF the main power switch, then back ON. Setting of the equipment Check if the MJ-1106 is set as the specified finisher on the equipment. Converter PC board • Check the connectors and harnesses between the converter PC board and the finisher controller PC board. • Board check Finisher control PC board • Check the connectors and harnesses between the hole punch control PC board and the finisher control PC board. • Board check Hole punch control PC board Board check