Epson 4000 Service Manual - Page 152
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UPC - 010343848337
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EPSON Stylus Pro 4000 2.2.8 Others P-COVER OPEN SENSOR This sensor is mounted at the Printer Cover right side open/close components to detect the open or closed condition of the Printer Cover. Dtecting open/closed status of the cover causes the CR Motor and PF Motor circuits to stop/operate the motors. Rear Cover Sensor Revision B P-Cover Open Sensor REAR COVER SENSOR This sensor is mounted at the printer right rear side to detect the removed/ installed condition of the Paper Guide Unit. Detecting installed/uninstalled status of the unit causes the CR Motor and PF Motor circuits to stop/operate the motors. CIRCUIT BOARD LAYOUT A Panel Unit is mounted to the printer front right surface, and an AC Inlet, Power Supply Circuit Board and MAIN Circuit Board are mounted in a rear surface compartment. Panel Unit Figure 2-60. Cover Sensor/Panel Unit AC Inlet Operating Principles Power Supply Circuit Board Figure 2-61. Circuit Board Layout MAIN Circuit Board Printer Mechanism Components 152