HP M1522nf Service Manual - Page 76
Pickup/feed/delivery system, PS915, fuser-delivery sensor and duplex sensor
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Pickup/feed/delivery system The pickup/feed/delivery system consists of several types of feed rollers and sensors. A motor and solenoid are used to drive the rollers. Three media-detection sensors detect media as it passes through the printer. If media does not reach or pass each sensor within a specified time period, the formatter determines that a jam has occurred. The following components are identified in Figure 4-8 Pickup/feed/delivery system on page 58: ● M1, main motor ● SL1, pickup solenoid ● PS751, top-of-page sensor ● PS915, fuser-delivery sensor and duplex sensor NOTE: This sensor has two sensor flags; one flag detects the media when it is delivered from the fuser, and the other flag detects the media when it is reversed for duplexing. ● PS702, media-width sensor Figure 4-8 Pickup/feed/delivery system Pressure roller Feed roller PS702 PS701 Fuser sleeve Photosensitive drum M1 Transfer roller PS751 Single-sheet-feed tray Pickup roller SL1 Separation pad Multi-purpose tray 58 Chapter 4 Operational theory ENWW