Paper Deck Lift-Up Operation; Figure 1-52 Paper Deck Lift-Up Operation - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Table 1-15
Paper size
Ledger
A3

Paper deck lift-up operation

The paper deck lifts up the tray to keep the surface of paper at the pickup position whenever the
following occurs:
The product is turned on
●
The cassette is installed
●
The paper stack surface lowers by pickup operation
●
NOTE: The following figure illustrates the mechanism for paper deck cassette 3, but each paper deck
cassette has the same mechanism.
Figure 1-52
The operational sequence of the lift-up is as follows:
1. The PD cassette 3 lifter motor rotates to raise the lifter.
2. The PD cassette 3 lifter motor stops when the PD cassette 3 media stack surface sensor detects the
paper surface.
3. The PD cassette 3 lifter motor rotates again when the PD cassette 3 media stack surface sensor
detects that the stack surface lowers during a print operation.
72 Chapter 1 Theory of operation
Paper deck media switch combinations (continued)
Cassette media-width switch
Top Center
OFF OFF
OFF OFF
Paper deck lift-up operation
Cassette 1
Cassette 2
PD cassette 3 media stack surface sensor
Cassette 3
PD cassette 3 lifter motor
Cassette media-end switch
Bottom Top
ON OFF
OFF OFF
SR92
Lifting plate Lifter
M92
Center Bottom
OFF ON
OFF ON
ENWW