TA Triumph-Adler P-4030D - Manual (Page 269)

8-21
Troubleshooting
Duplex Unit
Paper is jammed in the duplex section. Remove the jammed paper using the procedure given below.
1
Pull the cassette all the way out of the printer.
2
Open the duplex front cover and remove any jammed paper.
3
Close the duplex front cover.
4
Insert the cassette into the slot in the printer. The printer warms up
and resumes printing.