6.5.2.(6) Paper Exit Jam(6-1) Paper eject jam occurred immediately after turning on the printer.Confirmation Items Confirmation Tasks Action at NG(6-1-1) Check paper-ejecting route conditionPaper-ejecting route acrosspaper eject part.Check whether the paper jam occurred during the route. Remove the jammedpaper.(6-1-2) Check the mechanical parts' conditionCheck the paper-ejectingsensor lever.Check whether there is something abnormal about theform of sensor lever and its movement.Replace the sensorlever with a new one.(6-1-3) Check the electrical parts' conditionCheck the condition ofsensor signal detection.By using the switch scanning test function of themaintenance utility, check whether the sensor signal hasbeen normally detected.Replace the mainboard (M32 PCB) orEXIT sensor or theconnecting cablewith new one.Check the output level ofEXIT sensor.Check the following signals of RSNS connector of mainboard (M32 PCB).9pin: EXIT sensorOperate and adjust the sensor lever in order to check theabove signal level.Replace the EXITsensor with a newone.Check the power supplyof rear sensor relay board(ZAK PCB).Check the power supply of 5V of CN2 connector of rearsensor relay board (ZAK PCB).1pin: 5V power supply3pin: 0VLReplace theconnecting cablewith a new one.(6-1-4) Check the conditonSignal wire of rear sensorrelay board, EXIT sensorcableSignal wire of rearsensor relay board, EXITsensor cableCheck whether FFC has been inserted into RELAYconnector of main board (M32 PCB) and CN1 connectorof rear sensor relay board (ZAK PCB) normally.Checkwhether the cable between color difference sensorboard (ZAK PCB) and EXIT sensor has been connectednormally.Connect normally.Signal wire of rear sensorrelay board, EXIT sensorcableSignal wire of rearsensor relay board, EXITsensor cableCheck whether wire gnawing, peel-off or defective cableassembly exists.Replace theconnecting cablewith a new one andreassemble normally.Y108500-4 Service Manual 183
