HP 8550 Service Manual - Page 286

When a jam occurs, the copy module remembers how many originals have been copied. The count is sent to the ADF after jam removal, and the ADF circulates the originals that have been copied; it then places originals that have not been copied on the copyboard for copying. This is the reason normal copying would not be possible if a different number of originals are placed on the document tray after jam removal. Figure 172. Jam flowchart In the above chart, error 1 will be treated as a condition in which a different number of originals are placed after jam removal; in such a case, both the ADF and the copy module stop operation to indicate an error. The operation continues, however, for error 2. Resetting To reset, remove all originals from the document tray and glass, straighten them, and replace them on the document tray. If the copy module indicates a message follow such the message when placing the originals. In reduced page composition mode remove the originals from the document tray and open the ADF once. 284 Chapter - 5 Theory of operation EN