Lexmark T620 Service Manual - Page 127

4069-5XX/7XX Remove Paper - Output Bin X Full displays. You may not be able to clear the message. FRU Action 1 Dual Output Bin Sensor Flag Check the flag for correct operation, (Upper Assembly) binding, broken parts or interference from the sensor cable. If incorrect, repair as necessary. 271 Paper Jam - Check Bin X, POST incomplete. FRU 1 Upper Pass Thru Sensor Flag Assembly Upper Control Board Action Check the flag for correct operation, binding, broken parts or interference from the sensor cable. If incorrect, repair as necessary. If correct, check to make sure the lower pass thru sensor is correctly connected to J3 on the lower control board. Disconnect the pass thru sensor cable and check the voltage at J3-3. The voltage measures approximately +5 V dc. If incorrect, check the voltage at J3-2. The voltage measures approximately 0 V dc. If incorrect, replace the sensor assembly. If this does not fix the problem, replace the lower control board. 5-Bin Mailbox Service Check Service Tip: The majority of the mechanical components can be observed during operation by removing the left, right side covers. Make sure the option(s) are correctly installed before attempting to service the unit. Be sure the option is correctly installed and the machine is configured correctly before attempting to service the unit. Diagnostic Information 2-99