Lexmark W820 Service Manual - Page 95

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. • Broken or damaged FRUs within the Shift Roll area. 986 - Error Code Service Check Logic control sensed that the Punch failed. Step Actions and Questions Yes No 1 SENSOR TEST Go to step 3 Go to step 2 Enter Diagnostics and check the Finisher 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? 2 FINISHER PATH SENSOR Problem Go to step 6 Replace the Finisher Path Sensor. Enter Diagnostics and solved check the Finisher 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 SENSOR TEST Go to step 5 Go to step 4 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 EXIT PATH SENSOR Problem Go to step 6 Replace the Finisher Exit Path Sensor. Go to "Sensor, Exit solved Path Removal" on page 4-42. 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 PUNCH ASSEMBLY TEST Go to step 6 Replace the From the Finishing Menu, select Hole Punch On. From the Utilities Menu, select Quick Demo. Punch Assembly Does the Punch Assembly test ok? Diagnostic Information 2-35