C7350/7550 User’s Guide: Contents • 6(N-Up Printing) .............................................................427Custom Page Sizes..........................................................430Print Resolution ..............................................................440Duplex Printing ...............................................................442(Printing on Both Sides of the Paper) ...............................442Printing Booklets.............................................................446Printing Watermarks........................................................448Collating ........................................................................450Proof and Print ...............................................................451Secure Printing ...............................................................455(Printing Confidential Documents) ...................................455Hard Disk Drive ..............................................................459Overlays ........................................................................464Requirements for Using..................................................466Creating documents to use as overlays ............................468Downloading the print file to use as an overlay .................470Defining Overlays..........................................................472Printing Posters ..............................................................479Maintenance .................................................................... 481Adding Paper..................................................................481Changing the Toner Cartridge ...........................................484Changing the Image Drum ..............................................491Changing the Transfer Belt ...............................................494Changing the Fuser .........................................................499Cleaning the LED heads ...................................................502Moving (Shipping) the Printer ......................................... 504Troubleshooting .............................................................. 506Messages on Control (Front) Panel Display .........................506Paper Jams ....................................................................511Print Quality Problems .....................................................524Parallel Interface Problems ...............................................528USB Problems.................................................................531Application Error .............................................................533General Protection Fault...................................................533Paper Size Change request...............................................534Printer does not go online ................................................535Printer makes a strange noise...........................................535Printer takes a long time to start printing ...........................536Printing is slow ...............................................................537Printing does not start .....................................................537Printing cancels ..............................................................537Accessories ..................................................................... 538Memory (Additional)........................................................539Hard Disk Drive ..............................................................545Duplex Unit ....................................................................549
