Sharp AR-CF2 service manual Paper Width Detection Potentiometer TVR

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Paper Width Detection Potentiometer

Tray Sensor

Sub Tray Drawn Detection Sensor

Sub Tray Folded Detection Sensor

<9> Paper Width Detection Potentiometer (T_VR)

T_VR is a potentiometer.

The paper width is detected using the output voltage, which may vary depending on the potentiometer's knob position.

The signal is transmitted to the CPU (IC6-Pin112) through the noise fil- ters (R48,C12).

<10> Tray Sensor (T_SEN)

T_SEN uses the photointerrupter integrated with an LED and a pho- totransistor.

The sensor detects a sheet with the lever actuator interrupting the light path.

The signal is transmitted to the CPU (IC6-Pin126) through the noise fil- ters (R46,C15).

The signal input to the CPU follows the logic: "L" when a sheet is detected, "H" when not detected.

R52 is a load resistor for the sensor.

<13> JAM Cover Open/Closed Switch (JCK_SW)

JCK_SW is the JAM cover open/closed detection switch using the microswitch.

+24V is supplied to the switch. The contacts open when the JAM cover is open.

When the switch turns on, +24V voltage is applied to the cathode of ZD2, the base current flows to Q12, and Q12 turns on to transmit the signal to the CPU (IC6-Pin111).

The signal is also used as the +24V conduction signal simultaneously.

The signal input to the CPU follows the logic: "H" when the JAM cover is open, "L" when closed.

The +24V conduction signal follows the logic: "L" when the +24V volt- age is conducted.

<11> Sub Tray Drawn Detection Sensor (TH_SEN)

TH_SEN uses the photointerrupter integrated with an LED and the phototransistor in one unit.

The sensor detects state of the sub tray with the lever actuator inter- rupting the light path.

The signal is transmitted to the CPU (IC6-Pin127) through the noise fil- ters (R44,C14).

The signal input to the CPU follows the logic: "L" when the sub tray is drawn.

R51 is a load resistor for the sensor.

<12> Sub Tray Folded Detection Sensor (TS_SEN)

TS_SEN uses the photointerrupter integrated with an LED and a pho- totransistor.

The sensor detects state of the sub tray with the lever actuator inter- rupting the light path.

The signal is transmitted to the CPU (IC6-Pin128) through the noise fil- ters (R42,C13).

The signal input to the CPU follows the logic: "L" when the sub tray is folded.

R50 is a load resistor for the sensor.

AR-CF2 ELECTRICAL SECTION 9 - 5

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Contents Sharp Corporation Product Outline SpecificationsAR-CF2 External Views and Internal Structures 3 Sensors and switchesExternal Views and Internal Structures External componentsMotors, solenoid, and clutch Operational description Operational DescriptionStructure Function outlineNormal paper feed operation of inserter online/ offline Entering reverse section Reverse paper feeding operation of inserterExiting from reverse section Offline mode settingHow to set punching mode How to set stapling modeLED LED1 LED2 LED3 LED4 Start LED Mode LEDLED indication on operator panel List of Paper jams Paper jam/error detectionError detection Alarm detectionLED AdjustmentsPaper width detection level setting adjustment AR-CF2 Adjustments 5Pickup Roller & Paper Feed Roller Disassembly and AssemblyAR-CF2 Disassembly and Assembly 6 Paper Feed Separation UnitHorizontal Pass Roller 2 and Timing Roller Paper Feed UnitHorizontal Pass Roller 1 and Registration Roller Paper Guide Reverse Roller Belts Sensors Reverse flapper solenoid adjustmentDrive Unit Other PartsAR-CF2 Maintenance 7 MaintenanceMaintenance list PCB TroubleshootingAR-CF2 Troubleshooting 8 Tray alarm is displayed on the system display AR-CF2 Electrical Actual Wiring ChartElectrical Section DC+5V Block DiagramCircuit Description OutlineSensor Input Circuits Circuit DetailCommunication Circuit Paper Exit Sensor Hisen Paper Width Detection Potentiometer TVR Paper Feed Motor Drive Circuit Kmot Motor Drive CircuitsReset Circuit Eeprom Circuit Operator Panel Drive Circuit Inrush Current Limiting CircuitOperator Panel Circuit Memo Memo Example LEAD-FREE SolderVaroitus Trademark acknowledgements