Lexmark C750 Service Manual - Page 112

5060-00x Step 5 Action and questions See if the paper is trying to feed from the tray. Note: You can observe the autocompensator feed rolls and the paper through the tray access door. Run the Tray x feed test from the Diagnostics Menu to help diagnose a feed problem. See "Feed Test" on page 3-24. Is the media leaving the tray? Yes Go to step 9 No Go to step 6 6 7 Are the autocompensator pick arm rolls turning? Check the autocompensator pick arm rolls for wear or contamination. Are the autocompensator pick arm rolls worn or contaminated? Go to step 7 Replace the Pick Arm Rolls. See "Pick rolls" on page 4-48. Replace both rolls at the same time. Replace the wear strips Check for any obstructions that might catch the media and create a paper jam Replace the FRUs in the following order: 1. Pass thru sensor assembly 2. Electronics/size sensing assembly. Go to step 11 Go to step 8 8 Check paper tray wear strips for wear or contamination. Are the wear strips worn or contaminated? Go to step 9 9 Check the pass thru sensor for correct operation by running the Tray x sensor test from the Diagnostics Menu. See "Sensor Test" on page 3-24 . Does the pass thru sensor operate correctly? Go to step 10 10 Make sure the pass thru sensor is correctly connected to the Tray x system board. Is the sensor cable connected correctly? Install the cable correctly 11 Check the autocompensator cable for correct installation to Tray x system board. Is the cable connected correctly? Go to step 12 Install the cable correctly 12 Check the base door assembly, paper guide, wall support plate and door spring for damaged parts, warped parts or obstructions that might cause the paper to jam over the pass thru sensor. Did you find any problems with these parts? Repair or replace parts as necessary Replace the autocompensator assembly. See "Autocompensator pick assembly removal" on page 4-17. 2-78 Service Manual