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Sharp AL2050CS

Error Codes List page 3

  • Code: H2-00
  • Description: Thermistor open
    The thermistor is open. The fusing unit is not installed.
  • Causes: Thermistor abnormality Control PWB abnormality Fusing section connector disconnection The fusing unit is not installed.
  • Code: H3-00
  • Description: Heat roller high temperature detection
    The fusing temperature exceeds 240°C.
  • Causes: Thermistor abnormality Control PWB abnormality Fusing section connector disconnection.
  • Code: H4-00
  • Description: Heat roller low temperature detection
    1) When the target temperature (165°C) is not reached in 55 sec after starting warming-up. 2) When the temperature below 100°C is detected for 300ms under the ready print state. "Starting warming-up" means not only that in power supply but also reset that in reset from shut-off and in side door close. (The timing of generating H4 is not limited to that in power supply.)
  • Causes: Thermistor abnormality Heater lamp abnormality Thermostat abnormality Control PWB abnormality
  • Code: L1-00
  • Description: Feeding is not completed within the specified time after starting feeding. (The scan head locking switch is locked)
    The white area and the black marking on the shading plate are used to obtain the difference in the CCD level values for judgment of lock. When the difference in the levels of which and black is small, it is judged that the black mark could not be scanned by lock and the trouble code "L1" is displayed.
  • Causes: The scan head is locked by the lock switch. Mirror unit abnormality The scanner wire is disconnected. The origin detection sensor abnormality Mirror motor harness abnormality
  • Code: L3-00
  • Description: Scanner return trouble
    When the mirror base is returned for the specified time (6 sec) in mirror initializing after turning on the power, the mirror home position sensor (MHPS) does not turn ON. Or when the mirror base is returned for the specified time (about 6 sec) after start of copy return, the mirror home position sensor (MHPS) does not turn ON.
  • Causes: Mirror unit abnormality Scanner wire disconnection Origin detection sensor abnormality Mirror motor harness abnormality
  • Code: L4-01
  • Description: Main motor lock detection
    When the main motor encoder pulse is not detected for 100 msec.
  • Causes: Main motor unit abnormality Improper connection or disconnection the main motor and the harness. MCU PWB abnormality
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