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HP LaserJet Enterprise M552 - Tray 2 paper presence detection; Tray 2 lift operation

HP LaserJet Enterprise M552
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Figure 1-32 Tray 1 pickup mechanism
M5
SR8
SL2
Tray 1 pickup solenoid
Tray 1 pickup roller
Tray 1 separation pad
Tray 2 paper presence detection
The Tray 2 media-out sensor (SR12) detects the presence of paper in Tray 2.
The DC controller noties the formatter when the Tray 2 media-out sensor detects that paper is absent.
Tray 2 lift operation
The printer keeps the paper stack surface at the correct pickup position. The Tray 2 lift-up operation is
performed under the following conditions:
The printer is turned on
Tray 2 is installed
The paper stack surface in Tray 2 lowers
The operational sequence of the Tray 2 lift operation is as follows:
ENWW Pickup, feed, and delivery system 55

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