HP Officejet Pro X551 Printer series - Manual (Page 168)

Clear jams in the duplexer
1. Open the left door.
2. If you can see the trailing edge of the sheet,
remove the sheet from the product.
3. If the paper is not visible or accessible, remove
the duplexer by pulling it out with both hands.
Set the duplexer aside, upright, on a piece of
paper to prevent ink spills.
CAUTION: When pulling out the duplexer,
avoid making direct contact with the black
cylinder to prevent ink smear on skin or
clothes.
154 Chapter 11 Solve problems ENWW