CHAPTER 5 TROUBLESHOOTINGCOPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-H1 REV.0 MAR. 20015-285. Self-Testing5.1. OverviewThis ADF supports a self-testing capability, which is implemented by the CPU mountedon the ADF controller PCB. It carries on testing constantly and, when errors are estab-lished, flashes the Document Set to alert the user to them and transmitting the correspondingerror codes to the host. Three kinds of information may be transmitted as described below.These are identified by the Document Set LED and ADF controller PCB LEDs.DescriptionAlarmJamErrorT05-501-01When alarms or jams occur, their codes can be viewed by setting the host in servicemode. When errors occur, the corresponding error codes are displayed on the host screen.Document Set LEDflashing stateFlashing at 240 msec inter-valsFlashing at 160 msec inter-valsFlashing at 80 msec intervalsADF controller PCB LED display stateF05-501-01Jam codes;see table T02-301-01 and later‘1’ indicates a jam in the machine
