Lexmark C520 Service Manual - Page 72

5022-xxx Step Questions / actions Yes No 5 Check the high voltage contact from the HVPS Replace the transfer contact Go to step 6. to the photoconductor charge roll. Ensure the assembly. See "Transfer contact springs are properly mounted and that contact assembly the charge roll contact spring is making good removal" on page 4-92. contact with the HVPS 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. High voltage power supply High voltage contact path Are the spring(s) defective? 6 Turn off the printer and check the continuity of the HVPS cable. Go to step 7. Pin 1 Pin 23 Pin 24 Pin 23 Pin 2 Pin 24 Pin 2 Is there continuity? Pin 1 7 Replace the HVPS. See "High voltage power supply (HVPS) removal" on page 4-62. Did this fix the problem? 8 Replace the printhead. See "Printhead removal" on page 4-74. Did this fix the problem? Problem solved. Problem solved. Replace the cable assembly. Go to step 8. Replace the system card. See "System card removal" on page 4-79. Diagnostic information 2-57