Lexmark T620 Service Manual - Page 118

4069-5XX/7XX Output Bin Sensor Standard Tray Service Check Service Tip: If the output bin standard tray fills up and the bin full sensor fails to post the message "Remove Paper Standard Bin," enter the Diagnostic Mode, select Output Bin Tests, select Sensor Tests and select Standard Bin. Check the sensor and flag for proper operation. If you find no problem with the sensor and flag, continue with the service check. Service Tip: Check to make sure the correct flag is installed. The Output Bin Sensor is a normally closed sensor with the sensor flag down. Therefore, unless the flag is in the up position or out of the sensor slot, a Remove Paper Standard Bin message is not displayed. FRU 1 System Board Printer fails to display Remove Paper Standard Bin message. Output Bin Sensor Test fails. 2 Output Bin Sensor Flag Action Check the voltage at J8-3. It measures approximately +5 V dc when the flag is in the sensor and 0 V dc when the flag is out of the sensor. If the voltage does not change, replace the sensor cable assembly. If this does not fix the problem, replace the system board. Check to make sure the correct flag is installed. Check the flag for damage or improper operation. If incorrect, replace the flag. Note: A broken or improper operating sensor flag causes a Remove Paper Standard Bin message to display before POST completes and cannot be cleared. 2-90 Service Manual