HP M3027 Service Manual - Page 70
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UPC - 882780570054
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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. 34 5 1 2 6 8 7 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 powersupply, 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