B. During media feeding—a delivery stationary jam is assessed if the delivery sensor (PS2301) does not detect the trailing edge of the media within a specified period of time (T) after the top-of- page sensor (PS2305) detects the trailing edge. paper 200 mm or more: T=about 2.7 seconds paper less than 200 mm: T=about 5.2 seconds C. When a pickup delay jam occurs—the printer enters the last rotation period to deliver the jammed media. A delivery stationary jam is assessed if the delivery sensor (PS2301) does not detect the trailing edge of the media within 8 seconds after the completion of the forced laser emission. D.
During pressure roller cleaning—a delivery stationary jam is assessed if the delivery sensor (PS2301) does not detect the trailing edge of the media within 8 seconds after the 35th feed operation. Reversing sensors Reversing delay jam A reversing delay jam is assessed if the reversed paper sensor (PS501) does not detect the leading edge of the media within 3.9 seconds after the reversing motor starts rotating. Reversing stationary jam A reversing stationary jam is assessed when the reversed paper sensor (PS501) detects media after duplex pickup operation has been performed for about 0.77 seconds.
Duplexer sensors Duplexer pickup delay jam A duplexer pickup delay jam is assessed if the duplexer pickup paper sensor (PS503) does not detect media within 4.9 seconds after the reversed paper sensor (PS501) detects the leading edge. Duplexer pickup stationary jam A duplexer pickup stationary jam is assessed if the duplexer pickup paper sensor (PS503) detects media after about 3.4 seconds has passed since the reversed paper sensor (PS501) detected the trailing edge. Paper-feed sensor Paper feeder jam detection Jam detection for the paper feeders during the pickup and feed operations is same as that for the printer. For jam detection, see "Pickup delay jam" on page 91.
92 Chapter 5 Theory of operation C7058-90936