Service manual

Figure 4-13 Skew correction
Jam detection
This printer is provided with the following paper detection sensors to detect the presence of paper
and whether or not the paper feed is operating normally.
●
Registration paper sensor (SR1)
● Pre-fuser paper sensor (SR5)
● Fuser delivery paper sensor (SR4)
The CPU determines a paper jam by checking whether or not paper is present at the sensor at the
check timing. The check timing is stored in the memory of the CPU. If the CPU determines a jam, it
stops the print operation and notifies the formatter of a jam occurrence.
For more information, see
Clearing jams on page 100.
52 Chapter 4 Operational theory ENWW