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
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
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
Code: L4-10
Description: Job separator motor trouble
When the home is not detected within 2.5 sec after the job separator tray starts to move upwards.
Causes: The job separator upper limit detection sensor is defective. The job separator motor is defective. The job separator motor periphery circuit is defective. The condition of the MCU PWB JP5 is wrong.
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.
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 supply unit breakdown