Description: Mirror base feed trouble. The mirror home position (MHPS) does not turn off though the feed operation is completed during mirror initial operation after turning on the power. The mirror home position (MHPS) does not turn off during shading operation. The mirror home position (MHPS) does not turn on when the mirror base is returned for the specified time after copy feed is started and SPF scanning position shift is performed.
Causes: Mirror unit defect Mirror home position sensor defect MCU PWB defect Scanner wire disconnection
Remedy: Check the scanning operation with SIM 1-1.
Code: L3 00
Description: 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: 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 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
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