Lexmark T620 Service Manual - Page 141

4069-5XX/7XX Print Quality - Evenly spaced horizontal lines or marks. FRU 1 Lines spaced 3.19 mm (.126 inch) apart 2 Lines spaced 22.32 mm (.882 inch) apart Lines spaced 28.7 mm (1.130 inch) apart Lines spaced 47.83 mm (1.883 inch) apart Lines spaced 63.77 mm (2.511 inch) apart 3 Lines spaced 38.26 mm (1.506 inch) apart 4 Lines spaced 44.64 mm (1.757 inch) apart 5 Lines spaced 47.19 mm (1.858 inch) apart 6 Lines spaced 49.16 mm (1.935 inch) apart Action This can be caused by the motor pinion gear on the main drive motor. Replace the main drive motor. This can be caused by a defective gear in the main drive gearbox assembly. Replace the main drive gearbox assembly. This can be caused by defective gear(s) in the main drive gearbox. Replace the FRUs in the following order: main drive gearbox reference edge Replace the FRUs in the following order: developer drive assembly main drive gearbox assembly Replace the FRUs in the following order: toner cartridge charge roll developer drive assembly Replace the toner cartridge. Diagnostic Information 2-113