HP Color LaserJet 9500 Service Manual - Page 69
OMExit Exit-Stacker only
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Paper path and jam detection ● Paper input-The device receives media from the printer. ● Flipper-FLEntry1 senses the media and activates the flipper motors. For face-up printing, the flipper delivers the media to the face-up bin. Otherwise, the flipper changes page orientation from face-up to face-down and delivers the media to the paper-path module. ● Paper path-The paper-path module delivers face-down print jobs to the offset module. This module is bypassed if the destination is the face-up bin. ● Offset module -The offset module delivers face-down print jobs directly to the stacker bin (which the Exit senses). Jobs are offset in accord with the print configuration. Face-up path Face-down path Path through offset module Offset exit sensor Offset module Flipper entry sensor Flipper entry sensor 1 Interlock switch Paper input from the printer Flipper Flipper exit sensor Controller PCA Power supply Figure 31. Stacker jam detection The paper-path sensors detect jams at the following locations: ● Flipper entry sensor 1 (FLEntry1) and flipper entry sensor (FLEntry) ● Flipper exit sensor (FLExit) ● Paper-path sensor (Exit) ● OMExit (Exit)-Stacker only ENWW Chapter 5 Theory of operation 67