Lexmark T620 Service Manual - Page 124

4069-5XX/7XX No indication that Bin X is full OR No indication that Bin X is near full FRU 1 Dual Output Bin X Sensor Assembly Control Board Action Check for correct installation of the sensor cable at J5 on the control board. If either the Bin Full (F) or Bin Near Full (NF) fail the sensor test then check the voltage at J5-3 and J5-4. The voltage measures approximately +5 V dc. If the voltage is incorrect, replace the control board. If correct, replace the sensor assembly. High-Capacity Output Stacker Service Check Service Tip: The majority of the mechanical components can be observed during operation by removing the left, right and front covers. The high capacity output stacker option functions without the covers installed. Determine which paper path stacker assembly is not functioning properly. Make sure the option(s) are installed correctly and the machine is configured correctly before attempting to service the high-capacity output stacker option. Go to "High-Capacity Output Stacker Board" on page 5-14 to identify the correct jumper location at J6 for the upper and lower units. 2-96 Service Manual