Lexmark W820 Service Manual - Page 77

4025-Finisher Step Actions and Questions Yes No 2 SENSOR TEST Go to step 4 Go to step 3 Enter Diagnostics and check the H-Tra Exit 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 EXIT SENSOR Problem Go to step 4 Replace the H-Tra Exit Sensor. Go to "Sensors Removal" on solved page 4-20. Enter Diagnostics and check the H-Tra Exit 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 Exit 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? 5 MCU BOARD Problem Go to step 6 Replace the MCU Board. Refer to the Printer Service Manual. solved Enter Diagnostics and check the H-Tra Exit 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? 6 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 FRUs 285 - Attendance Message Logic Control sensed that the Finisher Input Path Sensor was not deactuated within a specified time after the Finisher Input Path Sensor was actuated. Step Actions and Questions Yes No 1 PATH LOCATION INSPECTION Go to step 2 Go to step 5 Inspect the position of the sheet of paper exiting the Finisher Input Path Sensor. Has the trail edge of the sheet of paper cleared the Finisher Input Path Sensor? Diagnostic Information 2-17