Brother MFC-L2716DW
Troubleshooting. Image defect 1
Light
User Check
- Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem.
- If the whole page is light, toner save mode may be ON. Turn OFF the toner save mode.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
- Turn ON the power switch, and leave the machine for a while (condensation).
- Check if paper is not damp.
- Use specified paper.
Step | Cause | Remedy |
---|---|---|
1 | Dirt on the electrodes of the drum unit and those of the machine | Clean the electrodes of the drum unit and those of the machine. |
2 | Dirt on the electrodes of the toner cartridge and those of the machine | Clean the electrodes of the toner cartridge, process unit and those of the machine. |
3 | Dirt on the electrodes of the high-voltage power supply PCB and those of the machine | Clean the electrodes of the high-voltage power supply PCB and those of the machine. |
4 | Fuser unit failure | Replace the fuser unit. |
5 | High-voltage power supply PCB failure | Replace the high-voltage power supply PCB ASSY. |
6 | Main PCB failure | Replace the main PCB ASSY. |
Faulty registration
User Check
- Check whether appropriate paper type is selected on the driver.
- Install the latest main firmware.
Step | Cause | Remedy |
---|---|---|
1 | Registration rear actuator coming off | Reattach the registration rear actuator. |
2 | Laser unit failure | Replace the laser unit. |
3 | Main PCB failure | Replace the main PCB ASSY. |
Dark
User Check
- Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem.
- If a new toner cartridge has been detected, check that it was not replaced with another toner cartridge.
- Execute density adjustment from the control panel.
- Clean the corona wire of the drum unit.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one
Step | Cause | Remedy |
---|---|---|
1 | Dirt on the electrodes of the drum unit and those of the machine | Clean the electrodes of the drum unit and those of the machine. |
2 | Wrong adjusted value of the laser unit entered | Refer to “Entering Adjusted Value of Laser Unit” in Chapter 4, and enter the adjusted value of the laser unit correctly. |
3 | Dirt on the electrodes of the high-voltage power supply PCB | Clean the electrodes of the high-voltage power supply PCB. |
4 | Fuser unit failure | Replace the fuser unit. |
5 | High-voltage power supply PCB failure | Replace the high-voltage power supply PCB ASSY. |
6 | Laser unit failure | Replace the laser unit. |
7 | Main PCB failure | Replace the main PCB ASSY. |
Poor fixing
User Check
- Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem.
- Clean the corona wire of the drum unit.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step | Cause | Remedy |
---|---|---|
1 | Dirt on the electrodes of the drum unit and those of the machine | Clean the electrodes of the drum unit and those of the machine. (Refer to Fig. 2-12 (P2- 56) and Fig. 2-13 (P2-56).) |
2 | Dirt on the electrodes of the toner cartridge and those of the machine | Clean the electrodes of the toner cartridge and those of the machine. (Refer to Fig. 2-12 (P2-56) and Fig. 2-16 (P2-84).) |
3 | Fuser unit failure | Replace the fuser unit. |
4 | High-voltage power supply PCB failure | Replace the high-voltage power supply PCB ASSY. |
5 | Low-voltage power supply PCB failure | Replace the low-voltage power supply PCB ASSY. |
6 | Laser unit failure | Replace the laser unit. |
7 | Main PCB failure | Replace the main PCB ASSY. |