3.Paper Delivery Problems
710
Double Feeding
Take the appropriate action according to the cause of the problem.
There is paper dust on the paper feed roller.
ï‚· Check the paper feed rollers of the A3/A4 LCTs, the multi bypass unit, and the cover interposer
tray.
ï‚· Paper dust weakens the traction of the paper feed roller, causing paper slipping or insufficient
separation.
ï‚· Cleaning the paper feed roller to maintain traction and prevent double feeding. (Cleaning the Paper
Feed Path)
Paper is not fanned sufficiently.
ï‚· Check the paper in the A3/A4 LCTs, the multi bypass unit, and the cover interposer tray.
ï‚· Double feeding may result if the paper is not ruffled properly.
ï‚· Remove the paper, ruffle it, and reload it.
Pickup Assist Function may cause double feeding (A3 LCT only)
With the A3 LCT, the Pickup Assist function may cause double feeding of coated paper. You can avoid
double feeding by disabling this function.
When using as a custom paper:
In Advanced Settings for the custom paper in use, set Pickup Assist Setting to Off. (1321-01)
When not using as a custom paper:
On the Adjustment Settings for Skilled Operators menu, select Machine: Paper Feed/ Output, and set
Pickup Assist Setting to Off. (SP 1-923-001 to 007: LCT Pickup Assist ON/OFF A3LCT Tray <number>)
Special or coated paper is used (A3 LCT only)
Is the airflow sufficient?
The factory default may not be strong enough to separate the sheets. Increase the airflow.
When using as a custom paper, in Advanced Settings for the custom paper in use, increase the value in
Adjust Wide LCT Fan Level.
When not using as a custom paper, On the Adjustment Settings for Skilled Operators menu, select
Machine: Paper Feed/ Output > Adjust Wide LCT Fan Level > Increase the setting. (SP 1-920-001: LCT
Tray Fan Duty Adjustment A3LCT Tray <number>)
Is the tab sheet holder attached?
Attach the tab sheet holder to prevent air from leaking at the trailing edge of the paper. This improves
paper separation.
ï‚· If the notch position adjustment of the paper feed unit where double feeds are occurring is not
set at the default position, you may have to adjust it again. Some types of paper may double-
feed more often than others, requiring adjustment. (For details, refer to "PFU Separation Roller