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Sharp AL1620

Error Codes List page 7

  • Code: L3-00
  • Description: Mirror base return trouble
    The mirror home position (MHPS) does not turn on though the mirror base returning is completed during mirror initial operation after turning on the power. The mirror home position does not turn on when the mirror is returned to the home position during shading. The mirror home position (MHPS) does not turn on when the mirror base returning is completed for the specified time (about 6 sec) after copy return start.
  • Causes: Mirror unit Mirror home position sensor defect MCU PWB defect Scanner wire disconnection
  • Remedy: Check the scanning operation with SIM 1-1.
  • Code: L4-01
  • Description: Main motor lock
    The main motor encoder pulse is not detected for 400msec.
  • Causes: Main motor defect Harness disconnection between the MCU PWB and the main motor. Control circuit failure
  • Remedy: Check the main motor operation with SIM 25-1. Check the harness and the connector between the MCU PWB and the main motor.
  • Code: L4-10
  • Description: Job separator motor abnormality
  • Causes:
  • Remedy:
  • Code: L6-10
  • Description: Polygon motor lock
    The lock signal (the specified rotation speed signal) is not supplied within the specified time (about 6 sec)after starting the polygon motor rotation.
  • Causes: LSU connector disconnection or harness disconnection in the LSU.
  • Remedy: Check the operation of the polygon motor with SIM 25-10. Check the harness and the connector connection. LSU replacement
  • Code: L8-01
  • Description: Zero cross pulse (FW) trouble
    Zero cross pulse width is shifted by 55Hz ± 10% or more.
  • Causes: MCU PWB defect Power unit breakdown
  • Remedy: Check the harness and the connector. MCU PWB replacement Power unit replacement
  • Code: U2-04
  • Description: EEPROM serial communication error
    Error in communication with EEPROM
  • Causes: EEPROM failure Installation of uninitialized EEPROM MCU PWB EERPOM access circuit failure
  • Remedy: Check that the EEPROM is properly set. To prevent against loss of counter/adjustment values, record the values with simulation. U2 trouble cancel with SIM 16 MCU PWB replacement
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