HP 8550 Service Manual - Page 76

Copier, display mode, jam details (continued) Table 32. Pick-up jams Type of original Original extraction Pick-up delay Registration delay Sensor S1, S7 S7 S3, S7 Description The sensor S7 does not detect the leading edge of an original 1500 msec after pick-up motor M1 has turned on and, in addition, the sensor S1 does not detect an original. The sensor S7 does not detect the leading edge of an original 1500 msec after the pick-up motor M1 has turned on. The sensor S3 does not detect the leading edge of an original 350 msec after the sensor S7 has detected the leading edge of an original. Code 0001 0002 0003 Table 33. Detecting jams Original placement Recirculation lever idle rotation Sensor S1 Pick-up failure S7 Paper overriding S7 the stopper plate Different number S3 of originals after jam removal Description RF operation The recirculation lever rotates idly without coming into contact with an original immediately after the recirculation motor (M4) turns on. Stops operating upon detection. The sensor S7 does not detect the leading edge of an original in 1500 msec during pick-up. The separation belt, feeding roller, and pickup roller stop immediately. The ADF stops after discharging the preceding originals. The original has overridden when Stops operating upon placed. detection. The number of originals placed on the document tray has changed as follows*: Number at end Number set on of copying document tray Stops operating upon detection. Code 01 03 05 11 74 Chapter - 3 Operational overview EN