When the input sensor does not get turned on by the feeding paper tray within certain time after bypass
tray’s pickup roller rotates once, the machine operates pickup roller up to 3 times. But when input sensor
was not turned on by paper even after the 3 pickup roller operations, the machine will display miss-feed.
Also, the machine does not have an automatic paper size detection sensor and it detects paper size with
input sensor’s on-off timing on feeding and when this detected paper size does not match with the
paper size set from PC, paper jam will occur as well.
Duplex Unit is composed with below 3 bodies and roles of each part are as the followings.
1) Upper Body: It works as upper rib to make the papers to through smoothly as main function
and compensates skew partially by having one roller.
2) Front Body: It works as a guide to move the papers to EP frame. And supports base body with a
fixture using spring.
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