For two-sided documents, the delivery rollers reverse the direction of each page to feed the second side
of the document past the ADF glass.
Figure 4-3 ADF path for two-sided documents on page 58 shows
the path for two-sided documents.
1
2
3 4 5
6
7
8
Figure 4-3 ADF path for two-sided documents
NOTE Callouts in Figure 4-3 ADF path for two-sided documents on page 58 are identical to
callouts in
Figure 4-2 ADF path for single-sided documents on page 57 .
Scanner
If the scanner fails, it can be replaced as a whole-unit replacement part. The scanner replacement part
does not include the ADF or the control panel.
The scanner is a carriage-type platen scanner, which includes the frame, glass, an internal power-
supply, a scanner-controller PCA, and internal electronics and firmware. The ADF and control panel are
attached to the scanner assembly.
The scanner has a sensor that detects whether the scanner lid is open or closed.
58 Chapter 4 Theory of operation ENWW
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