Lexmark W820 Service Manual - Page 76

4025-Finisher Step Actions and Questions Yes No 4 FINISHER MAIN BOARD Problem Replace the Replace the Finisher Main Board. Go to "PWB Assembly- solved Main Removal" on page 4-132. Enter Diagnostics and check MCU Board 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 PATH PAPER INSPECTION Go to step 6 Replace the Inspect the Drive Rolls in the entire H-Tra Assembly. suspect Drive Are all of the Drive Rolls in the H-Tra Assembly clean and Rolls free of obvious wear and damage? 6 DRIVE TRAIN TEST Go to step 7 Replace the Enter Diagnostics and select Output Bin Tests. Select Feed Finisher Main Test, Output Bin 2 to run the Finisher Main Feed Motor. Feed Motor Does the Finisher Main Feed Motor run smoothly? 7 DRIVE TRAIN INSPECTION Go to step 8 Replace the Inspect the drive train, including belts, pulleys, and gears, of suspect belts, the entire H-Tra Assembly from the Finisher Main Feed Motor pulleys, and to Feed Roller 1. gears Does the entire drive train of the H-Tra Assembly appear to be in good condition, with no damaged or slipping belts and no chipped or broken pulleys or gears? 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 284 - Attendance Message Logic Control sensed that the H-Tra Exit Sensor was actuated during Finisher initialization. Step Actions and Questions Yes No 1 SENSOR INSPECTION Remove Go to step 2 Inspect the H-Tra Exit Sensor for a piece of paper or something whatever is else actuating the Sensor. actuating the Is there a piece of paper or something else actuating the Sensor Sensor? 2-16 Service Manual