Xerox PHASER 6121MFP, Service Manual

Page: 61 / 532

Phaser 6121MFP Service Manual 2-19
Theory of Operation
Scan from ADF
The Scanner performs these steps during a scan of an original placed on the
platen.
• The exposure unit moves from the home position (stand-by position) reading
the shading sheet to make a shading compensation.
• The exposure units moves to the stand-by position.
• It moves to ADF reading position and original image reading starts.
• After the reading completes, the exposure lamp turns OFF and moves to the
stand-by position.
• After it moves again to detect the reference position, it moves to the stand-by
position and stops.
s6121mfp-116
ADF Reading
Position
Home Position (Stand-by Position)
Reference Position
Shading
Reference Position Detection
Original
Reading