Sharp AR-CF2 service manual Motor Drive Circuits, Paper Feed Motor Drive Circuit Kmot

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(3) Motor Drive Circuits

<1> Paper Feed Motor Drive Circuit (K_MOT)

Paper Feed MOT

Not Mounted

This circuit rotates/stops K_MOT and controls its rotational direction and the motor current. The circuit consists of the CPU (IC6), the D/A converter (IC13), the constant-current chopper driver IC (IC9), and other elements.

The signals of the stepping-motor drive excitation pattern from the CPU (IC6-Pin37,38,70,71) control the motor rotation speed and rota- tional direction.

<2> Reverse Motor Drive Circuit (H_MOT)

The analog signal from the D/A converter (IC13-Pin11) is divided into the constant voltage by R53 and R54. The divided voltage is applied to IC9-Pin9,11 to set the motor current.

Reverse MOT

Not Mounted

This circuit rotates/stops H_MOTand controls its rotational direction and the motor current. The circuit consists of the CPU (IC6), the D/A converter (IC13), the constant-current chopper driver IC (IC7), and other elements.

The signals of the stepping-motor drive excitation pattern from the CPU (IC6-Pin118, 120, 121, 122) control the motor rotation speed and rotational direction.

The analog signal from the D/A converter (IC13-Pin5) is divided into the constant voltage by R74 and R75. The divided voltage is applied to IC7-Pin3,14 to set the motor current.

<3> Transport Motor Drive Circuit (Y_MOT)

Horizontal

Transport MOT

Not

Mounted

This circuit rotates/stops Y_MOT and controls its rotational direction and the motor current. The circuit consists of the CPU (IC6), the D/A converter (IC13), the constant-current chopper driver IC (IC8), and other elements.

The signals of the stepping-motor drive excitation pattern from the CPU (IC6-Pin97, 98, 101, 102) control the motor rotation speed and rotational direction.

The analog signal from the D/A converter (IC13-Pin6) is divided into the constant voltage by R76 and R77. The divided voltage is applied to IC8-Pin3,14 to set the motor current.

AR-CF2 ELECTRICAL SECTION 9 - 6

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Contents Sharp Corporation Specifications Product OutlineSensors and switches External Views and Internal StructuresExternal components AR-CF2 External Views and Internal Structures 3Motors, solenoid, and clutch Operational Description StructureFunction outline Operational descriptionNormal paper feed operation of inserter online/ offline Reverse paper feeding operation of inserter Entering reverse sectionOffline mode setting How to set punching modeHow to set stapling mode Exiting from reverse sectionStart LED Mode LED LED indication on operator panelLED LED1 LED2 LED3 LED4 Paper jam/error detection Error detectionAlarm detection List of Paper jamsAdjustments Paper width detection level setting adjustmentAR-CF2 Adjustments 5 LEDDisassembly and Assembly AR-CF2 Disassembly and Assembly 6Paper Feed Separation Unit Pickup Roller & Paper Feed RollerPaper Feed Unit Horizontal Pass Roller 1 and Registration RollerHorizontal Pass Roller 2 and Timing Roller Paper Guide Reverse Roller Sensors Reverse flapper solenoid adjustment Drive UnitOther Parts BeltsMaintenance Maintenance listAR-CF2 Maintenance 7 Troubleshooting AR-CF2 Troubleshooting 8PCB Tray alarm is displayed on the system display Actual Wiring Chart Electrical SectionAR-CF2 Electrical Block Diagram Circuit DescriptionOutline DC+5VCircuit Detail Communication CircuitSensor Input Circuits Paper Exit Sensor Hisen Paper Width Detection Potentiometer TVR Motor Drive Circuits Paper Feed Motor Drive Circuit KmotReset Circuit Eeprom Circuit Inrush Current Limiting Circuit Operator Panel Drive CircuitOperator Panel Circuit Memo Memo LEAD-FREE Solder ExampleVaroitus Trademark acknowledgements
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