Xerox Phaser 6128 MFP, Руководство по обслуживанию

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2-54 Phaser 6128MFP Service Manual
Theory of Operation
• Registration Sensor
The Registration Sensor detects the preceding media is about to leave the
Registration Roller, thereby determining the next document feed can be
started.
• Document Present: Shielded (blocked)
• Document Absent: Unshielded (unblocked)
• ADF Motor
The ADF Motor rotates the Nudger Roller, Feed Roller, Takeaway Roller,
Registration Roller, and Exit Roller.
ADF Media Path
The media set in the document tray is conveyed through the Feed Roller, Takeaway
Roller, and Registration Roller. The media image is scanned at the Constant
Velocity Transport (CVT) position, and the media is ejected through the Exit Roller.
Media Setting
When media is set in the paper tray and pushed into the tray until its lead edge
stops, an Actuator moves to place the ADF Document Sensor in the unshielded
(unblocked) state, indicating media detection.
Preparation for Feed
The media in the paper tray starts feeding when the Start button is pressed.
The Nudger Roller moves down and presses onto the media in the paper tray to
enable media feed. The Nudger Roller moves down with normal rotation of the
ADF Motor. Upon completion of media feed, the ADF Motor reverses rotation to
return the Nudger Roller to its normal position.
s6128-054
Document Sensor
Exit Roller CVT Position
Nudger Roller
(Feed Roller Assembly)
ADF Separator Pad
Feed Roller (Feed Roller Assembly)
Feed Sensor
Takeaway Roller