Table 7-24. Light Print, Dark Print, or Fade Possible Cause Action Wrong Toner density setting. From the print quality menu on the Control Panel, adjust the Toner density setting. Make sure EconoMode is off. Toner Cartridge is low. Replace the Toner Cartridge. Transfer Roller is defective. Replace the Transfer Roller. Paper does not meet printer specifications or is stored improperly. 1. Print a few more pages to see if the problem corrects itself. 2. Turn over the stack of paper in the tray. Also try rotating the paper 180°. 3. Check the paper (or other print media) type and quality. Replace the paper, and advise the customer to use the recommended paper and store it properly.
Poor contact to the Engine Controller Board. 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 if necessary. Defective Laser Scanner. Replace the Laser Scanner. Defective Engine Controller Board. Replace the Engine Controller Board. See also “Faded Print/Bubbles” on page 7-65. 7-68 Troubleshooting