| Problem | Possible Cause | Solution |
Light print, dark print, or fade
|
Toner cartridge is low or failing
|
Replace the toner cartridge
|
Light print, dark print, or fade
|
Transfer roller was not installed correctly, or is defective
|
Reinstall transfer roller, making sure it is fully seated. Replace transfer roller if necessary.
|
Light print, dark print, or fade
|
Dirty laser scanner, or defective laser scanner
|
Clean laser scanner mirrors. Replace laser scanner if necessary.
|
Light print, dark print, or fade
|
Poor contact from toner cartridge to engine controller board, or failing engine controller board, or failing high voltage power supply
|
1. Ensure that the drum ground spring is connected to the engine controller board correctly. 2. Clean the contacts if they are contaminated. If the problem remains after cleaning, or parts are damaged or deformed, replace them. 3. Replace the engine controller board. 4. Replace the high voltage power supply.
|
| Light print, dark print, or fade |
Wrong toner density setting, or EconoMode setting |
From the Print Quality menu, adjust the toner density setting. Make sure EconoMode is off. |
