Sharp MXM202D

• Code: E7-91
• Description: Decode error (FAX print)
  When image data sent from the FAX board to the machine are judged as decode error
• Causes: Connector connection trouble MCU PWB abnormality
• Remedy: Turn OFF/ON the power. Connect the connector again. Replace the MCU PWB.

• Code: E7-93
• Description: Data communication error (FAX scan)
  When data transmission from the machine to the FAX board fails 5 times
• Causes: Connector connection trouble FAX PWB abnormality
• Remedy: Turn OFF/ON the power. Connect the connector again. Replace the FAX PWB.

• Code: F2-40
• Description: ATC sensor abnormality
  ATC sensor value abnormality
• Causes: Connector connection trouble Toner cartridge installation trouble Sensor breakdown
• Remedy: Connect the connector again. Install the developing unit again. Replace the developing unit with a normal one

• Code: F2-64
• Description: Toner supply abnormality
  When toner near end is detected with the toner supply time of 50% or less. When the toner supply time exceeds 300%.
• Causes: ATC sensor abnormality Toner supply abnormality
• Remedy: Replace the toner cartridge. Replace the developing unit.

• Code: F2-70
• Description: •Improper cartridge (Destination error, life cycle error) •Identific t ion error •Model error •Type error •Destination error •Data abnormality •Misc error
  •The destination of the machine differs from that of the CRUM. •The trade mark code of the CRUM differs. •The company code of the CRUM differs. •The boot program model code does not coincide with the CRUM model code. •When the CRUM type is other than genuine/ conversion/production rotation. •The machine destination differs from the CRUM destination.
• Causes: CRUM chip defect Improper toner cartridge.
• Remedy: Replace the toner cartridge.

• Code: F2-74
• Description: CRUM chip communication error
  An error occurs during communication between the MCU and the CRUM chip. The CRUM identification error occurs.
• Causes: CRUM chip abnormality Developing unit disconnection MCU PWB abnormality
• Remedy: Replace the toner cartridge. Check installation of the developing unit. Use SIM16 to cancel. Replace the MCU PWB.