• Code: 4800
• Display: Replace WT Box Replace the Waste Toner Box inside the machine. To get to it, remove all the Drums & Toners then remove the Belt Unit.
• Description: After the waste toner sensor detected that the waste toner box was almost full, pages more than the specified number have been printed.
• Causes: 1 Dirt on the contact of waste toner sensor in high-voltage power supply PCB 2 High-voltage power supply PCB failure 3 Main PCB failure

• Code: 4B01
• Display: Toner Low Prepare New Toner Cartridge.
• Description: Dot counter of the toner cartridge (Black) or develop roller counter reaches the upper limit soon.
• Causes: 1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter

• Code: 4B02
• Display: Toner Low Prepare New Toner Cartridge.
• Description: Dot counter of the toner cartridge (Yellow) or develop roller counter reaches the upper limit soon.
• Causes: 1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter

• Code: 4B03
• Display: Toner Low Prepare New Toner Cartridge.
• Description: Dot counter of the toner cartridge (Magenta) or develop roller counter reaches the upper limit soon.
• Causes: 1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter

• Code: 4B04
• Display: Toner Low Prepare New Toner Cartridge.
• Description: Dot counter of the toner cartridge (Cyan) or develop roller counter reaches the upper limit soon.
• Causes: 1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter

• Code: 4C01
• Display: Replace Toner Open the Top Cover, replace Toner Cartridge.
• Description: Dot counter of the toner cartridge (Black) or develop roller counter has reached the upper limit was detected.
• Causes: 1 Process drive unit damaged 2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter

• Code: 4C02
• Display: Replace Toner Open the Top Cover, replace Toner Cartridge.
• Description: Dot counter of the toner cartridge (Yellow) or develop roller counter has reached the upper limit was detected.
• Causes: 1 Process drive unit damaged 2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter

• Code: 4C03
• Display: Replace Toner Open the Top Cover, replace Toner Cartridge.
• Description: Dot counter of the toner cartridge (Magenta) or develop roller counter has reached the upper limit was detected.
• Causes: 1 Process drive unit damaged 2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter