Solenoid, photosensors, and switches The following figure shows the locations of the solenoid, photosensors, and switches. 1 6 2 3 4 7 5 Figure 19. Solenoid, photosensors, and switches 1 Paper delivery sensor (PS401) senses when paper has successfully moved out of the fusing area. 2 Power switch. Note Products sold in North America and all of the 100-110V units do not have power switches. 3 Top-of-page sensor (PS402) detects the leading and trailing edges of the paper. It synchronizes the photosensitive drum and the top of the paper. 4 Engine test switch (SW201), see “Engine test” on page 200 for an explanation of the switch.
5 Door-open switch (SW301) detects whether or not the print cartridge door is closed and the print cartridge is installed properly. Printing cannot continue until the print cartridge door is closed and the print cartridge is in its correct position. 6 Solenoid (SL001) activates the pickup roller. 7 Paper-out sensor (PS201) senses when paper is in the main input tray or the priority input tray. EN Printer functions and operation 97