HP laserjet m712 Guide De Dépannage
Table 1-8
500-sheet paper feeder electrical components
Component
Abbreviation
Component name
Motor
M1
PF cassette pickup motor
M2
PF cassette lifter motor
Solenoid
SL1
PF cassette pickup solenoid
Photointerrupter
SR1
PF cassette media feed sensor
SR2
PF cassette media stack surface sensor
SR3
PF cassette media out sensor
Switch
SW1
PF right door open detection switch
SW2
PF cassette media width switch
SW3
PF cassette media end switch
500-sheet paper feeder motor control
The paper feeder has two motors for the paper-feed and cassette lift-up.
Figure 1-40
500-sheet paper feeder motor locations
PF cassette lifter motor
PF cassette pickup motor
Table 1-9
500-sheet paper feeder motors
Motor
Components driven
M1
PF cassette pickup motor
Pickup roller, separation roller and feed roller for the PF cassette
M2
PF cassette lifter motor
Lifter for the PF cassette
500-sheet paper feeder failure detection
The paper feeder controller determines a cassette lifter motor failure according to the condition of the
related part. The paper feeder controller does not determine if the cassette pickup motor has failed;
therefore, a jam occurs when the motor fails.
ENWW
500-sheet paper feeder (Tray 4)
51