HP LaserJet 6p/mp Service Manual - Page 66
PS204 5L only, SW101, PS202, Drive Unit, Main Motor, Formatter, DC Controller, Heating Element
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Page 66 highlights
Figure 5-6 shows the locations of the photosensors, switches, solenoid, and other important printer elements. Table 5-1 describes the function of each photosensor and the solenoid. PS204 (5L only) SW101 PS202 PS203 SL1 Drive Unit Pick-up Roller Assembly Laser Scanner Heating Element Main Motor Formatter SW201 DC Controller PS201 Figure 5-6 Solenoid and sensors Table 5-1 Solenoid and sensors Number Name Description SL1 Paper Pick-up Solenoid Enables the Paper Pickup Roller. PS201 Paper Exit Sensor Senses when paper has successfully moved out of the fusing area and the next sheet of paper can be fed. PS202 Paper Out Sensor Senses no paper in either the Paper Input Tray or Manual Input Slot. If this sensor does not sense paper in the Input Paper Tray or the Single-Sheet Input Slot, the formatter displays the paper-out indication on the Control Panel. Paper must be reloaded before printing can resume. PS203 Paper Registration Sensor Detects the leading and trailing edges of the paper. Synchronizes the photosensitive drum and the top of the paper. PS204 Door Open/Cartridge Sensor (HP LaserJet Detects whether printer door is open and 5L only) In the HP LaserJet 6L, SW101 cartridge is in place. If the door is open or performs the function of 5L's PS204. The the cartridge is not in place, the control 6L Pro has no toner cartridge sensor. panel LEDs will display an error message. Printing cannot continue until the door is closed and the cartridge is in proper position. 64 Functional overview EN