HP P3015 Service Manual

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...

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...

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...