Sharp MXM160DK

• Code: L6-10
• Description: Polygon motor lock detection
  The polygon motor does not rotate.
  The motor lock signal is detected for 6sec after rotation of the polygon motor. The motor lock signal is detected for 1sec during rotation of the polygon motor.
• Causes: Polygon motor unit abnormality
  Improper connection or disconnection of the polygon motor and the harness.
  MCU PWB abnormality.
• Remedy: Use SIM 61-1 to check the polygon motor operations. Check connection of the polygon motor harness/connector. Replace the polygon motor. Replace the MCU PWB.

• Code: L8-01
• Description: No full wave signal
  The zero cross signal is not detected.
• Causes: Power unit abnormality.
  MCU PWB abnormality.
• Remedy: Check connection of the harness and connectors. Replace the MCU PWB. Replace the power unit.

• Code: U1-03
• Description: FAX board battery error
  FAX board backup battery error.
• Causes: The voltage of the backup battery of SRAM which is installed to the FAX board falls below a certain level.
• Remedy: Replace the battery.

• Code: U2-04
• Description: EEPROM read/write error (serial communication error)
  EEPROM access process error.
• Causes: EEPROM abnormality.
• Remedy: Check that the EEPROM is properly set. Use SIM 16 to cancel the trouble. Replace the MCU PWB.

• Code: U2-11
• Description: Counter check sum error (EEPROM)
  Check sum error of the counter area in the EEPROM.
• Causes: EEPROM abnormality.
• Remedy: Check that the EEPROM is properly set. Use SIM 16 to cancel the trouble. Replace the MCU PWB.

• Code: U2-40
• Description: CRUM chip communication error
  An error occurs during communication between the MCU and the CRUM chip.
• Causes: CRUM chip abnormality.
  Developing unit disconnection.
  MCU PWB abnormality.
• Remedy: Replace the chip. Check installation of the developing unit. Use SIM 16 to cancel the trouble. Replace the MCU PWB.