Duplex Switchback Sensor (Sr1); Figure 2-13 Duplex Switchback Sensor - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Duplex switchback sensor (SR1)

1.
Remove the duplexer from the product.
2.
Insert a sheet of paper in the duplexer until the sheet covers the sensor.
Figure 2-13
3.
Reinstall the duplexer, and then check the control-panel display for sensor response.
4.
If there is no response, replace the duplexer.
ENWW
Duplex switchback sensor
Tools for troubleshooting
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