CHAPTER 13 TROUBLESHOOTINGCOPYRIGHT © 2002 CANON INC. 2000 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002 13-185E531 The stapler does not leave the stapling home position sensor (S13) within0.5 sec after the stapler motor (M6) is rotated CW.The stapler does to return to the home position sensor (S13) within 0.5sec after the stapler motor (M6) is driven CW and, in addition, it does notreturn to the sensor within 0.5 sec after the motor is driven CCW thereaf-ter.Possible cause The stapler motor (M6) is faulty. The stapler home position sensor (SW1)is faulty. The stapler harness is faulty. The finisher controller PCB isfaulty.Remedy1) WiringIt the wiring between the stapler unit and the finisher controllerPCB normal?NO : Correct the wiring.2) Stapler unit, Finisher controller PCBTry replacing the stapler unit. Is the fault corrected?YES : End.NO : Replace the finisher controller PCB.E537 The front aligning plate does not reach home position when the frontaligning motor (M3) is driven for a specific time.The front aligning plate does not leave home position when the frontalignment motor (M3) is driven for a specific time.Possible cause The front alignment motor (M3) is faulty. The front aligning plate homeposition sensor (S6) is faulty. The sensor connector is disconnected or hasan open circuit. The front alignment motor relay harness if faulty. Thefront aligning plate is subjected to an abnormal load. The finisher control-ler PCB is faulty.Remedy1) Front aligning plate home position sensor (S6)Check the front aligning plate home position sensor (S6). Is thesensor normal?NO : Replace the sensor.2) wiringIs the wiring between the finisher controller PCB and the frontalignment motor (M3) normal?NO : Correct the wiring.3) Front aligning plateIs the rack riding over the collar of the roll?YES : Correct it.