Canon imageCLASS MF4890dw Service Manual page 47

2
Technical Overview > Document Exposure/Feeder System > Document Feeder System > Various Control
In the case of SADF
Document
Sensor
Document
Edge
Sensor
J15
1 2 3 4 5 6
Main Controller
In the case of DADF
Document
Sensor
Document
Edge
Sensor
J15
1 2 3 4 5 6
Main Controller
2 Technical Overview > Document Exposure/Feeder System > Document Feeder System > Various Control
● Jam Detection
The following cases are judged as jam.
1. In case of delay in reaching DS/DES or stationary during scanning of original
2. In case DS/DES is detected as ON at power-on (residual paper jam)
3. In case of detecting original of which length is 400 mm or longer
• Operation after Detection of Jam
The host machine stops scanning operation and displays "CHECK DOCUMENT" on the
control panel. No jam code is displayed. In case of the model equipped with fax function (with
built-in speaker), the warning beep occurs at the detection of jam.
• How to release Jam
Remove the jammed paper and open / close the SADF/DADF upper cover
F-2-11
F-2-12
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