HP LaserJet M1005 Service Manual - Page 70
Jam detection in the device, Conditions of jam detection
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Figure 5-5 Device paper path Jam detection in the device The top-of-page sensor (PS801) and the paper-delivery sensor (PS803) detect media moving through the device. If a jam is detected, the ECU immediately stops the printing process and the Attention (Cancel) light illuminates on the control panel. Conditions of jam detection ● Pickup delay jam-Paper does not reach the top-of-page sensor (PS801) within 1.4 seconds after the pickup solenoid (SL1) has been turned on, a second pickup operation is attempted, and paper again does not reach the top-of-page sensor within 1.4 seconds. ● Pickup stationary jam-The top-of-page sensor (PS801) does not detect the trailing edge of media within 4.6 seconds of detecting the leading edge. 54 Chapter 5 Theory of Operation ENWW