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HP laserjet m712 Guide De Dépannage

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Jam detection
The product uses the following sensors and switches to detect the presence of paper and to check
whether the paper is being fed correctly or has jammed:
●
Left door interlock switch (SW1)
●
Cartridge door interlock switch (SW2)
●
Cartridge door open detection switch (SW3))
●
TOP sensor (SR9)
●
Loop sensor (SR6)
●
Fuser output sensor (SR12)
●
Output sensor (SR3)
●
Output bin media full sensor (SR4)
●
Right door sensor (SR8)
Figure 1-37
  Product engine jam detection sensors and switches
SR4
SW1
SW2
SW3
SR3
SR12
SR9
SR6
No pick jam 1
●
MP tray
The TOP sensor does not detect the leading edge of paper within a specified period (including
two retries) from when the MP tray pickup solenoid is turned on.
●
Standard cassette
The TOP sensor does not detect the leading edge of paper within a specified period (including
two retries) from when the cassette pickup clutch is driven.
●
Duplexer
ENWW
Pickup, feed, and delivery system
47