Lexmark W820 Service Manual - Page 84

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 FRUs 290 - Attendance Message Logic Control sensed that the Finisher Exit Path Sensor did not deactuate within the specified time after it 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 in the Finisher. Has the trail edge of the sheet of paper cleared the Finisher Exit Path Sensor? 2 SENSOR TEST Go to step 4 Go to step 3 Enter Diagnostics and check the Finisher Exit Path 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 FINISHER EXIT PATH SENSOR Problem Go to step 4 Replace the Finisher Exit Path Sensor. Go to "Sensor, Input solved Path Removal" on page 4-41. Enter Diagnostics and check the Finisher Exit Path 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 Replace the Replace the Finisher Main Board. Go to "PWB Assembly- solved MCU Board Main Removal" on page 4-132. Enter Diagnostics and check the Finisher Exit Path 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 PATH PAPER INSPECTION Go to step 6 Replace the Inspect the Drive Rolls in the Finisher, especially the Registration Rolls, Shift Rolls, and Exit Rolls. suspect Drive Rolls Are all of the Drive Rolls in the Finisher clean and free of obvious wear and damage? 2-24 Service Manual