Description: Shading trouble White correction is not completed in the specified number of operations.
Causes: CCD unit flat cable connection failure. Dirt on mirrors, lenses, and the reference white plate. Copy lamp lighting abnormality. CCD unit abnormality. MCU PWB abnormality .
Remedy: Clean mirrors, lenses, and the reference white plate. Check the copy lamp light quantity (SIM 05-03) and lighting. Check the CCD unit. Check the MCU PWB.
Code: E7-16
Description: Abnormal laser output When the laser output is stopped, HSYNC is detected.
Causes: Laser abnormality. MCU PWB abnormality.
Remedy: Check the laser emitting diode operation. Replace the MCU PWB.
Code: F2-02
Description: Toner supply abnormality When toner near end is detected with the toner supply time of 50% or less When the toner supply time exceeds 300%..
Remedy: Replace the toner cartridge. Replace the developing unit.
Code: F2-04
Description: Improper cartridge (destination error, life cycle error) The destination of the machine differs from that of the CRUM. The life cycle information is other than "Not used (FFh)".
Causes: CRUM chip defect. Improper developing unit .
Remedy: Check and remedy Replace the CRUM chip. Replace the developing unit. Identification error The trade mark code of the CRUM differs. The company code of the CRUM differs. Model error The boot program model code does not coincide with the CRUM model code. Type error When the CRUM type is other than genuine/conversion/production rotation. Destination error The machine destination differs from the CRUM destination. Data abnormality When an error value is included in the initial check information. When the max. toner supply time is 00. When the print hard stop is 00. Misc error When the Misc information is other than "Not used (FFh)".
Code: F2-40
Description: ATC sensor abnormality ATC sensor value abnormality
Remedy: Use SIM 5-3 to check the copy lamp operations. When the copy lamp lights up. Check the harness and the connector between the CCD unit and the MCU PWB. When the copy lamp does not light up. Check the harness and the connector between the copy lamp unit and the MCU PWB. Replace the copy lamp unit. Replace the MCU PWB.