Lexmark C750 Service Manual - Page 114

5060-00x Step 10 Action and questions Is the registration home sensor operating correctly? Yes Replace the following FRUs in the order shown: 1. HCIT system board 2. Feed unit assembly No Replace the following FRUs in the order shown: 1. Registration sensor 2. HCIT system board Go to step 14 11 Use the "HCIT system board LED error code table" on page 2-128. Does the LED flash 8 times? Go to step 12 12 Make sure the pick home sensor cable is installed correctly to the sensor and to CN6 on the system board. Is the cable connected correctly? Go to step 13 Install the cable correctly. 13 Is the registration home sensor operating correctly? Replace the following FRUs in the order shown: 1. HCIT system board 2. Feed unit assembly Replace the following FRUs in the order shown: 1. Registration sensor 2. HCIT system board Replace the feed unit assembly. 14 Use the standalone feeding operation test to determine where the paper jams. Use the "HCIT system board LED error code table" on page 2-128 to help isolate problems in the feed unit assembly. Are you able to determine where the failure is occurring? Repair or replace parts as necessary. 2-80 Service Manual