Oki Data CONFIDENTIAL45487001TH Rev.1 6-52 /6. Troubleshooting procedureCheck item Check work Actions to be takenat NG(5-2-4) Check the system connectionPaper feed motordrive cableCheck the connection condition of the cable.Check if the connector is connected inthe half-way only or not, and check if theconnector is inserted in a slanted angle ornot.Check also that cables are assembled withoutany abnormality.Replace thecable with thegood cablethat normalizesthe connectioncondition.6.5.2.(6) Paper running jam (Error 381)(6-1) Jam occurs immediately after the power is turned on.Check item Check work Actions to be takenat NG(6-1-1) Check condition of the running path.Paper running pathof the front unitCheck if paper is jammed or not in the paperrunning path.Remove thejammed paper.(6-1-2) Check condition of the mechanical partsCheck the sensorlever of the WR2sensor.Check if shape and movement of the sensorlevers have any abnormality or not.Replace thesensor leverwith the goodsensor lever.(6-1-3) Check condition of electrical partsCheck the detectioncondition of thesensor signal.Confirm that the sensor signals are normallydetected by using the SWITCH SCANfunction of the self-diagnostic mode.Replace eitherthe PU/CUboard or theWR2 sensoror connectioncable.Check the sensorlever of the WR2sensor.Check for the following signals at theWR2SNS connector of the PU/CU board.Pin-2: WR2 sensorConfirm that the above signal levels changewhen the sensor lever is operated.Replace theWR2 sensorCheck the powervoltages suppliedto the WR2 sensorCheck the 5V power at the WR2SNSconnector of the WR2 sensor .Pin-1: 5V power supplyPin-3: 0VLReplace theconnectioncable.
