Top Page > Troubleshooting: TCRU/ORU > Troubleshooting Paper Delivery Problems > Messages Reporting Paper Misfeeds > If (J129) Appears > Cause:
Misfeeding of sheets other than the cover has occurred in the tray for booklet folding.
This may occur if:
Attempted booklet folding of paper with high image density at the folds.
Attempted booklet folding of a bundle of 15 or more sheets.
The temperature or humidity is low.