ADF/scanner system
ADF
If the ADF fails, it can be replaced as a whole-unit replacement part.
Sensors in the ADF
The ADF contains the following sensors:
●
ADF-cover sensor. Detects whether the ADF cover is open or closed.
●
Top-of-page sensor. Detects the top of the page before sending a page through the ADF and the
end of the page after feeding/scanning is complete.
●
Paper-present sensor. Detects whether a document is present in the ADF. If paper is present in
the ADF when copies are made, the device scans the document using the ADF. If no paper is
present when copies are made, the device scans the document using the scanner glass.
ADF paper path
The ADF feeds documents past the ADF glass for scanning.
Figure 4-2 ADF path for single-sided
documents on page 57 shows the path for single-sided documents.
1
2
3 4 5
6
7
8
Figure 4-2 ADF path for single-sided documents
1 Separation pad 5 ADF input tray
2 Pickup roller 6 Delivery/duplex-feed rollers
3 Stack stop 7 ADF glass
4 Pre-pick roller 8 ADF feed rollers
ENWW Basic operation 57
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