Lexmark T632 Service Manual - Page 77

4060-xxx Charge roll service check Service tip: Close and evenly spaced repetitive marks 47.19 mm (1.86 in.) apart, or spots on the page can be caused by a damaged or contaminated charge roll. Service tip: 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 3 Right side charge roll link Right charge roll bushing 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. Check the right side charge roll link assembly for correct assembly operation. If incorrect, replace the charge roll link assembly with the charge roll link assembly kit. If correct, check the right charge roll link assembly bearing for signs of wear or contamination. Excessive contamination could cause intermittent charging of the charge roll. If incorrect, replace the link assembly. Check for continuity of the right link assembly from the bearing to the charge roll high voltage contact on the right side frame. If incorrect, replace the link assembly. Make sure the charge roll bushing is installed and operating correctly. Note: The screw that attaches the charge roll lead to the contact must be secure. Diagnostic information 2-43