Lexmark T620 Service Manual - Page 75

4069-5XX/7XX Charge Roll Service Check Service Tip: Close and evenly spaced repetitive marks 47.19 mm (1.86 inch) apart or spots on the page can be caused by a damaged or contaminated charge roll. Service Tip: Check to make sure the right charge roll arm bushing is correctly installed and operates correctly. To remove the charge roll: 1. Wrap a piece of plain white paper around the charge roll to prevent contamination or damage. 2. Carefully remove the roll by pressing outward and to the right on the charge roll link arm and remove the charge roll from the right side charge roll bearing. 3. Remove the charge roll from the left side charge roll bearing and remove the roll from the printer. Leave the paper wrapped around the charge roll until it is reinstalled. FRU 1 Charge Roll Assembly 2 Left Side Charge Roll Link Action Check the charge roll for correct installation, toner buildup, marks, cuts or other signs of contamination or damage. Replace as necessary. Check the left side charge roll link assembly for correct assembly operation. Check for damage to the arm or bearing assembly. Diagnostic Information 2-47