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Depending on the cause of the problem, do one the following:
An envelope is being used.
The seams of envelopes may cause double feeds to be wrongly detected.
Disable the double feed detection.
<If custom paper is used>
In [Advanced Settings] for the custom paper you are using, select 1331: [Jam Detection] and then set [Detect JAM099] of [JAM080/097/098/099] to [Off].
<If custom paper is not used>
In the [Machine: Paper Feed/ Output] group on the [Adjustment Settings for Operators] menu, set 0305: [Detect JAM099] to [Off].
Thin paper is being used
When using thin paper, the machine may wrongly detect double feeding.
Disable the double feeding detection function.
<If custom paper is used>
In [Advanced Settings] for the custom paper you are using, select 1331: [Jam Detection] and then set [Detect JAM099] of [JAM080/097/098/099] to [Off].
<If custom paper is not used>
In the [Machine: Paper Feed/ Output] group on the [Adjustment Settings for Operators] menu, set 0305: [Detect JAM099] to [Off].
The double-feed sensor is soiled with paper dust or other particles.
The double-feed sensor may be soiled.
Clean the double-feed sensor with a blower brush.
