CHAPTER 13 TROUBLESHOOTINGCOPYRIGHT © 2002 CANON INC. 2000 CANON iR1600/iR2000 REV.1 JAN. 200213-1264) Front alignment motor (M3), Finisher controller PCBTry replacing the front alignment motor (M3). Is the problem cor-rected?YES : End.NO : Replace the finisher controller PCB.E551 The delivery fan rotation signal (FNALCOK) does not arrive within 1 secwhen the heat discharge fan drive signal (FANON) is sent.Possible cause The heat discharge fan (FM1) is faulty. The heat discharge fan relay harnessis faulty. The heat discharge fan is subjected to an abnormal load. The fin-isher controller PCB is faulty.Remedy1) WiringIs the wiring between the heat discharge fan and the finisher con-troller PCB normal?NO : Correct the wiring.2) Heat discharge fan (FM1), Finisher controller PCBTry replacing the heat discharge fan (FM1). Is the fault corrected?YES : End.NO : Replace the finisher controller PCB.
