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Jam detection
The product uses the following sensors to detect the presence of print-media and to check whether the
print-media is being fed correctly or has jammed:
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TOP sensor (PS5)
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Fuser delivery sensor (PS6)
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Loop sensor 1 (PS7)
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Loop sensor 2 (PS8)
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Output bin media full sensor (PS10)
Figure 1-47 Sensors for jam detection
PS6
PS7
PS8
PS5
Simplex media path
Duplex media path (duplex model)
PS10
The product detects the following jams:
Pickup delay jam Tray 1 (MP tray): The TOP sensor does not detect the leading edge of paper within a
specified period, including a retry, after the MP tray pickup solenoid is turned on.
Tray 2 cassette: The TOP sensor does not detect the leading edge of paper within a
specified period, including a retry, after the Tray 2 cassette pickup solenoid is turned on.
Paper feeder: The TOP sensor does not detect the leading edge of paper within a specified
period after the paper-feeder (PF) feed sensor detects the leading edge.
Pickup stationary jam The TOP sensor does not detect the trailing edge of paper within a specified period after the
leading edge of paper reaches the secondary transfer roller unit.
Fuser delivery delay jam The fuser delivery sensor does not detect the leading edge of paper within a specified period
after the leading edge of paper reaches the secondary transfer roller unit.
66 Chapter 1 Theory of operation ENWW