Lexmark W820 Service Manual - Page 73

4025-Finisher Step Actions and Questions Yes No 8 The following Finisher FRUs and areas are associated with this specific problem. One or more of these FRUs or areas may have failed partially or completely. If you cannot isolate this problem using these steps, replace each FRU or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Finisher Main Board MCU Board 281 - Attendance Message Logic Control sensed that the H-Tra Input Sensor was actuated during Finisher initialization. Step Actions and Questions Yes No 1 SENSOR INSPECTION Remove Go to step 2 Inspect the H-Tra Input Sensor for a piece of paper or whatever is something else actuating the Sensor. actuating the Is there a piece of paper or something else actuating the Sensor Sensor? 2 SENSOR TEST Go to step 4 Go to step 3 Enter Diagnostics and check the H-Tra Input Sensor function. Insert then remove a sheet of paper into the sensor. Does the Operator Panel LCD change between OP and CL as you insert then remove the paper? 3 H-TRA INPUT SENSOR Problem Go to step 4 Replace the H-Tra Input Sensor. Go to "Sensors Removal" solved on page 4-20. Enter Diagnostics and check the H-Tra Input Sensor function. Insert then remove a sheet of paper into the sensor. Does the Operator Panel LCD change between OP and CL as you insert then remove the paper? 4 FINISHER MAIN BOARD Problem Go to step 5 Replace the Finisher Main Board. Go to "PWB Assembly- solved Main Removal" on page 4-132. Enter Diagnostics and check the H-Tra Input Sensor function. Insert then remove a sheet of paper into the sensor. Does the Operator Panel LCD change between OP and CL as you insert then remove the paper? Diagnostic Information 2-13