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HP P3015 Service Manual

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    							Motors, fans, clutches, solenoids, switches, and sensors
    Figure 1-3  Motors
    Main motor
    Fuser motor
    Table 1-2
      Motors
    DescriptionComponents drivenFault detection
    Main motor (M8001)●Pickup roller
    ● Feed roller
    ● Transfer roller
    ● Photosensitive drum
    ● Developing roller
    ● Duplex repickup roller (duplex models only)Yes
    Fuser motor (M8002)●Pressure roller
    ● Delivery roller
    ● Fuser-delivery roller
    ● Duplex-feed roller (duplex models only)Yes
    ENWW
    Engine-control system 7 
    						
    							Figure 1-4  Fans
    Main fan
    Sub fan
    Table 1-3   Fans
    DescriptionArea cooledTypeSpeed
    Main fan (FM1)Inside the productIntakeFull
    Sub fan (FM2)Inside the productIntakeFull
    Figure 1-5   Solenoids and clutches (product)
    SL1
    SW235
    SL2
    M8001
    M8002PS3
    PS215PS205
    PS502
    PS8001
    PS4
    PS1
    PS2PS225
    SW501
    Table 1-4   Solenoids and clutches (product)
    ItemDescription
    SL1Tray 1 (multipurpose tray) pickup solenoid
    SL2Cassette (Tray 2) pickup solenoid
    8 Chapter 1   Theory of operation ENWW 
    						
    							Figure 1-6  Solenoids and clutches (Tray 3 and Tray 4)
    PS451
    PS8008
    SL3
    M8001
    SW461
    CL1
    Table 1-5
      Solenoids and clutches (Tray 3 and Tray 4)
    ItemDescription
    SL3Paper feeder pickup solenoid
    CL1Paper feeder pickup clutch
    1Tray 3 and Tray 4 are identical 500-sheet input trays.
    ENWW Engine-control system 9 
    						
    							Figure 1-7  Switches (product)
    SL1
    SW235
    SL2
    M8001
    M8002
    PS3
    PS215PS205
    PS502
    PS8001
    PS4
    PS1
    PS2PS225 SW501
    Table 1-6
      Switches (product)
    ItemDescription
    SW235Cassette presence switch
    SW501Cartridge-door switch
    10 Chapter 1   Theory of operation ENWW 
    						
    							Figure 1-8  Switches (Tray 3 and Tray 4)
    PS451
    PS8008
    SL3
    M8001
    SW461
    CL1
    Table 1-7
      Switches (Tray 3 and Tray 4)
    ItemDescription
    SW461Paper feeder cassette presence switch
    1Tray 3 and Tray 4 are identical 500-sheet input trays.
    ENWW Engine-control system 11 
    						
    							Figure 1-9  Sensors
    PS215
    PS502
    PS4
    PS2PS225
    PS8008
    PS1
    PS451
    PS8001
    PS205
    PS3
    PS8008
    PS451
    Table 1-8  Sensors
    ItemDescriptionItemDescription
    PS1Face-up sensorPS225Media width sensor
    PS2Fuser delivery sensorPS502Duplex media-feed sensor (duplex models only)
    PS3Cassette media-presence sensorPS451Paper feeder cassette media-presence sensor
    NOTE:PS451 is used in Tray 3, and Tray 4
    12 Chapter 1   Theory of operation ENWW 
    						
    							ItemDescriptionItemDescription
    PS4Face-down tray media-full sensorPS8001Rear door sensor
    PS205Tray 1 (multipurpose tray) media-presence
    sensorPS8008Paper feeder media-feed sensor
    NOTE:PS8008 is used in Tray 3, and Tray 4
    PS215Top-of-Page (TOP) sensor 
    Table 1-8   Sensors (continued)
    ENWW Engine-control system 13 
    						
    							DC controller operations
    The DC controller controls the operational sequences of the product systems.
    Figure 1-10  DC controller block diagram
    Engine controller
    Fuser
    High-voltage
    power supply
    Print cartridge AC input
    Low-voltage
    power supply
    Motor
    Solenoid
    Photointerrupter
    DC controller
    Laser/scanner
    Formatter Switch
    Fan
    Optional paper-feeder Control panel
    Table 1-9   DC controller controlled components
    ComponentDesignatorDescription
    MotorM8001Main motor
    M8002Fuser motor
    FanFM1Main fan
    FM2Sub fan
    Solenoid SL1Tray 1 (multipurpose tray) pickup solenoid
    SL2Cassette (Tray 2) pickup solenoid
    14 Chapter 1   Theory of operation ENWW 
    						
    							ComponentDesignatorDescription
    PhotointerrupterPS1Face-up sensor
    PS2Fuser delivery sensor
    PS3Cassette media presence sensor
    PS4Face-down tray (output bin) media-full sensor
    PS205Tray 1 (multipurpose tray) presence sensor
    PS215Top-Of-Page (TOP) sensor
    PS225Media width sensor
    PS451Paper feeder cassette media-presence sensor
    NOTE:PS451 is used in Tray 3, and Tray 4
    PS502Duplex media-feed sensor (duplex models only)
    PS8001Rear door sensor
    PS8008Paper feeder media-feed sensor
    Switch SW235Cassette-presence switch
    NOTE:PS8008 is used in Tray 3, and Tray 4
    SW240Power switch
    SW250Test Print switch
    SW501Cartridge-door switch
    Table 1-9   DC controller controlled components (continued)
    ENWW Engine-control system 15 
    						
    							Fuser-control circuit
    The fuser-control circuit monitors and controls the temperature in the fuser. The product uses on-
    demand fusing. The fuser-control circuit consists of the following major components:
    ●Fuser heater (H1); heats the fusing film
    ● Thermistor (TH1 and TH2); detects the fuser temperature (contact type)
    ◦Main thermistor (TH1); controls the temperature in the fuser (contact type)
    ◦ Sub thermistor (TH2); detects a one-sided temperature rise in the fuser and controls the
    temperature in the fuser (contact type)
    ● Thermoswitch (TP1); prevents abnormal temperature rise in the fuser (contact type)
    Figure 1-11   Fuser control circuit
    TH2 TH1
    TP1
    H1FUSER TEMPERATURE signal 
    FUSER HEATER CONTROL signal
    Fuser heater safetycircuit
    DC controller
    Fuser control circuitPressure roller
    Fuser film
    Fuser heater control circuit
    Engine controller unit
    16 Chapter 1   Theory of operation ENWW 
    						
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