Canon M3010 Series Service Manual

Contents

Canon M3010 Series Service Manual Manual pdf 44 page image

22 2-292-29Technical Overview > External And Controls System > Power Supply > Protective FunctionsTechnical Overview > External And Controls System > Power Supply > Protective FunctionsExternal And Controls SystemPower Supply■ Power Supply24V24V3.3V5.5V5.5V3.3V5.5V3.3V3.3VMain Controller PCBCIS UnitControl Panel Unit5.5V3.3V1.0V24VDC/DCConverter5.7V24V24V3.3VEngine Controller PCBProtectionCircuitMotor Driver PCBLaser Scanner UnitReader Motor(M3)Main Motor(M1)Fixing AssemblyPickup Solenoid(SL1)24VPowerSupplyAssemblyFU101 FU201FU202 FU203SW1100SW501F-2-33■ Protective Functions● Power protective functionLow voltage power circuit carries the overcurrent preventive function against and overvoltagepreventive function that block the voltage output automatically to prevent the power circuitbrokerage when the overcurrent or overvoltage occur due to load errors such as short circuitetc.Thus, when the DC power cannot be output from the low voltage circuit, the protectivefunction against overcurrent or overvoltage may be working. Turn OFF the Power Switch(SW1100) to fix load errors and turn ON the Power Switch (SW1100) again (see CAUTION).Also the circuit carries the 4 fuses (FU101, FU201, FU202, FU203) as another preventivefunction. The fuses blow to block the power supply when overcurrent occurs in AC line.CAUTION:When restoring the low voltage power after protective function is activated, leave it for2 minutes or more from turning off the Power Switch (SW1100) or plugging out beforeturning ON.● Safety functionThe host machine equips the function of stopping 24V in part of the high voltage power unit toavoid users and engineers from getting burned or electric shock.When the cartridge door is opened, the Door Switch (SW501) is turned off and 24V suppliedto the high voltage power unit is shut.Engine controller CPU determines the door open when the Door Switch (SW501) is turnedOFF.