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Jam detection
The following illustration shows the paper detection sensors in the device that determine when a jam
has occurred.
PS502
PS4
PS903
PS901
SR2
1
2
3
4
5
Figure 6-1 Jam-detection sensors
1 Output-bin-full sensor (PS4)
2 Delivery sensor (SR2)
3 Top-of-page sensor (PS901)
4 Paper-width sensor (PS903)
5 Duplex sensor (PS502)
The device determines if a jam has occurred by determining whether paper is present at the sensor or
not at a specified time in the printing process. The printing process timing is stored in the device memory.
If the device determines that a jam has occurred, it stops the printing operation and produces a control-
panel error message. The table below describes the two different types of jams.
150 Chapter 6 Troubleshooting ENWW