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