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HP laserjet m712 Guide De Dépannage

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Manual sensor tests 
Performs tests to determine whether the paper-path sensors are operating correctly.
1.
At the product control panel, press the Home   button.
2.
Open the following menus:
●
Administration
●
Troubleshooting
●
Diagnostic Tests
●
Manual Sensor Test
Table 2-10
  Manual sensor tests
Sensor or switch
name
Sensor
number
Replacement part
number
Description
Paper-path sensor
test name
Testing of sensor
Cartridge-door switch
SW3
CN
Toner cartridge door
switch
SW3 Cartridge Door
Open the cartridge
door.
Left door switch
SW1
CN
Left door open switch
SW1 Left Door
Open the left door.
Right door sensor
SR8
CN
Right door open
sensor
SR8 Right door
Open the right door.
Cartridge install sensor
SR1
CN
Toner cartridge
installed sensor
SR1 Cartridge install
sensor
Open the cartridge
door, and then remove
the toner cartridge.
Top sensor
SR9
CN
Top sensor PCA
Sr9 Top Sensor
Open the cartridge
door, remove the toner
cartridge, raise the
registration shutter,
and then use a small
flat-blade screwdriver
to activate the sensor.
Fuser loop sensor
SR6
CN
Fuser loop sensor
SR6 Fuser loop 1
sensor
Open the cartridge
door, remove the toner
cartridge, and then
press the sensor lever.
Fuser output sensor
SR12
CN
Fuser output sensor
SR12 Fuser output
sensor
Open the left door,
pull down the fuser
shutter, and then use a
screwdriver to activate
the sensor.
Duplex refeed sensor
SR2
CN
Duplexer refeed sensor SR2 Duplexer refeed
Remove the duplexer,
insert a sheet of paper
so that it covers the
refeed sensor, and
then reinstall the
duplexer.
108
Chapter 2   Solve problems
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