44072903TH Rev.1 183 /Oki Data CONFIDENTIAL 7. TROUBLESHOOTING PROCEFRURES7.5.2.(6) Paper Path Jam(Error 381)(6-1) Paper path jam occurs right after turning on the powerConfirmation Items Confirmation Tasks Action at NG(6-1-1) Check of state of running routePaper running routein front Unit.Check to see if there is paper jammed on therunning route.Remove thejammed paper.(6-1-2) Check of state of mechanical partsCheck sensor leversof WR sensor.Confirm that there is no abnormality in theshape of the sensor lever and in the operation.Replace thesensor leverwith a normalone.(6-1-3) Check of electrical partsCheck the stateof sensor signaldetection.Use the SWITCH SCAN function of the self-diagnostic mode to check to see if the sensorsignal is detected normally.Replace thePU PCB, frontsensor PCB(RSF PCB)or connectioncord.Check the outputlevel of the WRsensor.Check the following signal through the FSNSconnector ⑯ of the PU PCB.Pin 2: WR sensor Confirm that the above signallevel varies as the sensor lever is actuated.Replace thefront sensorPCB (RSFPCB).Check the powersupply of the frontsensor PCB (RSFPCB).Check 5V power with CN connector ㉕ of a frontsensor board (RSF PCB).1pin:5V Power5pin:0VLReplace theconnectioncord.(6-2) Paper path jam occurs right after feeding paperConfirmation Items Confirmation Tasks Action at NG(6-2-1) Check of state of running routePaper running routeon the beltRemove the ID unit, and check to see if there ispaper jammed on the running route.Remove thejammed paper.(6-2-2) Check of state of mechanical partsCheck the sensorlever of the WRsensorCheck to see if the sensor lever demonstratesany abnormal shape or motion.Replace thesensor lever witha normal one.(6-2-3) Check of operating state of motorsFeed motor, beltmotor, ID motorConduct the Motor and Clutch Test of theself-diagnostic mode, and check to see if thefeed motor, belt motor and ID motor operatenormally.Make this checking in the presence andabsence of a load.Replace the PUPCB, if the feedmotor, belt motor,ID-up motor or IDmotor is faulty.Replace the feedmotor, belt motoror ID motor.Replace the IDunit or belt unit.To use a newconsumableon a trial basis,use FUSEKEEP MODEof the SystemMaintenanceFeed motor driver,ID upmotor driver,and belt motor driverUnplug the HOPIDUP connector ① of the PUPCB, and confirm the following on the connectorside:Several MΩ between pin 1 and FGSeveral MΩ between pin 2 and FGSeveral MΩ between pin 3 and FGSeveral MΩ between pin 4 and FGUnplug the BELT connector ③ of the PU PCB,and confirm the following on the connector side:Several MΩ between pin 1 and FGSeveral MΩ between pin 2 and FGSeveral MΩ between pin 3 and FGSeveral MΩ between pin 4 and FGSeveral MΩ between pin 5 and FGSeveral MΩ between pin 6 and FGSeveral MΩ between pin 7 and FGSeveral MΩ between pin 8 and FGReplace the PUPCB, if the feedmotor, belt motor,ID up-motor or IDmotor is faulty.
