Canon Color Image Reader - L1 Service Manual

Also see for L1: Installation procedures Instructions

Canon Color Image Reader - L1 Service Manual Manual pdf 12 page image

2-12-122 TechnologyTechnologyBasic configurationFunction configurationFollowing is the list of functions.Original size detectionImage processingDust detectionScanner driveReader controller PCBA/D conversionImage scanningScanner unitReader unitMagnification changeMain controller PCBParts configurationFollowings are the positions and names of main configuration parts.Original size sensor 2(CF2)Original size sensor 1(CF1)Scanner unitcooling fan (FM2)Scanner unitDADFopen/closedsensor 1(SR1)Scanner unithome position sensor(SR2)Scanner unitexhaust fan (FM1)Reader controller PCB(PCB1)Scanner motor (M1)DADFopen/closedsensor 2(SR3)Component part Symbol Function/specificationScanner motor M1 2 phase pulse motor: pulse controlScanner unit exhaust fan FM1 Exhaustion of scanner unitScanner unit cooling fan FM2 Cooling of scanner unitDADF open/closedsensor 1SR1 DADF open detection (DADF is detected at 5 degree)Scanner unit HP sensor SR2 Scanner unit HP detectionDADF open/closedsensor 2SR3 DADF open detection (size detection timing is detectedwhen DADF is open at 25 degree.Original size sensor 1 CF1 Size detection in sub scanning direction (AB type)Original size sensor 2 CF2 Size detection in sub scanning direction (INCH type)Scanner unit --- Image reading, analog image processingReader controller PCB PCB1 Control of entire reader, digital image processing