Lexmark T620 Service Manual - Page 126

4069-5XX/7XX 202 Paper Jam Open Rear Door Message displays and a sheet of paper is jammed prior to the pass through sensor flag or 202 Paper Jam Open Rear Door Message displays, a sheet of paper feeds out to the standard bin even though bin X is selected and paper exits half way out of the redrive assembly. Service Tip: For this type of problem check the "Base Printer Sub Error Codes" on page 2-10. They can help isolate the problem. A 202 paper jam message can also occur prior to the high-capacity output stacker pass through sensors. FRU Action 1 Lower Pass Thru Sensor/ Flag Assembly 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. 2 High-Capacity Output Check to ensure the output stacker Stacker Drive belt(s), Drive drive belt or the failing assembly is Pulleys, Belt Idlers, and Belt correctly installed on the drive pulley Tension Springs and belt idler pulley. Check the belt tension spring to make sure it is not loose or broken. Repair as necessary. 3 Mechanical Linkage/Motor Assembly (Upper or Lower) If the DC motor is functioning properly check the gears, clutch and other linkage parts for correct operation and any signs of wear, broken gear teeth or damaged parts. If incorrect, replace the mechanical linkage assembly/DC Motor Assembly. 2-98 Service Manual