HP Enterprise CP5525 manual Paper-feeder jam detection, SR3

The paper feeder controller PCA determines a PF lifter motor failure and notifies the formatter through the DC controller when the PF paper-stack surface sensor does not detect the stack surface within a specified period after the PF lifter motor starts rotating.

Figure 1-52Paper-feeder cassette lift operation

SR3

PF cassette media presence sensor SR2

PF media stack surface sensor

Lifting plate

Lifter

PF cassette media presence sensor flag

PF lifter motor M2 PF media stack surface flag

Paper-feeder jam detection

The paper feeder uses the PF paper-feed sensor (SR1) to detect the presence of print-media and to check whether print-media is being fed correctly or has jammed.

Figure 1-53Paper-feeder jam detection

SR1

Paper feeder 1

The paper feeder detects the following jams:

PF pickup delay jam	The PF paper-feed sensor does not detect the leading edge of paper within a specified period,
	including a retry, after the PF pickup solenoid is turned on.
PF residual paper jam	The PF paper-feed sensor detects a presence of paper when the printer is turned on, when the
	door is closed or when the automatic delivery is performed.
PF door open jam	A door open is detected during paper-feed operation.

72 Chapter 1 Theory of operation ENWW