5-74 Phaser 7400 Color Printer Options Service ManualFront Door Switch and SensorThe Front Door Sensor detects when the Front Door (Door J) is open or removed. TheFront Door Interlock Switch will open to prevent the power supply from placinghazardous voltages in accessible areas when the Front Door is removed. To removeand replace the switch and/or the Sensor:1. Remove the Paper Exit Tray (page 5-7).2. Remove the Front Door (page 5-8).3. Remove the Rear Cover (page 5-11).4. Remove the Upper Cover (page 5-13).5. Locate the plastic mounting unit that houses the Front Door Switch and the FrontDoor Sensor (see illustration).6. Remove the single screw (metal, 6 mm) holding the plastic mounting holder tothe chassis.7. To remove the Front Door Switch, first lift connector CN68 off of the twoconnector pins, and then release the two hooks securing the switch to the chassis.8. To remove the Front Door Sensor, first remove the 4-wire connector CN25 fromthe sensor, and then pinch the plastic tabs to pull the sensor free.Front Door SwitchFront Door SensorUpper Cover Sensors7400-699CN25CN68
