Lexmark C520 Service Manual - Page 75

5022-xxx Print quality-solid color page Service tip: A solid color page is generally caused by a problem in the high voltage system or an incorrect high voltage in the printing process resulting in toner development on the entire photoconductor drum. Step Questions / actions Yes No 1 Replace the photoconductor unit for the color in question. Does this fix the problem? Problem solved. Go to step 2. 2 Check the high voltage contact from the HVPS to the photoconductor charge roll. Ensure the contact springs are properly mounted and that the charge roll contact spring is making good contact with the HPVS spring that runs through the left printer frame. See "Transfer contact assembly removal" on page 4-92 to view the proper mounting and for removal procedures. Replace the transfer contact assembly. See "Transfer contact assembly removal" on page 4-92. Go to step 3. High volt power supply High volt contact path Note: Printer is shown with components removed for clarity Are the spring(s) defective? 3 Turn the printer off, and check the continuity of the HVPS cable. Go to step 4. Pin 1 Pin 23 Pin 24 Pin 23 Pin 2 Pin 2 Is there continuity? Pin 1 Pin 24 2-60 Service Manual Replace the cable assembly.