HP CP3525dn Service Manual - Page 172
Multipurpose tray pickup,
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Multipurpose tray pickup The multipurpose tray paper-presence sensor detects whether paper is in the tray. If no paper is present, the DC controller notifies the formatter. Printing does not occur until paper is in the tray. The sequence of steps for the multipurpose tray pickup operation as follows: 1. After receiving a print command from the formatter, the DC controller reverses the pickup motor, which causes the multipurpose tray separation roller to rotate. 2. The DC controller turns on the multipurpose tray pickup solenoid (SL3), causing the multipurpose tray pickup roller to rotate. 3. The multipurpose tray separation roller isolates a single sheet of paper in case more than one sheet was picked. The single sheet of paper feeds into the product. The MP-tray media-presence sensor (SR21) detects whether the media is present in the MP tray. No printing occurs if no media is loaded. Figure 5-36 Multipurpose tray pickup mechanism 144 Chapter 5 Theory of operation ENWW
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