HP Color LaserJet 4650 Printer series - Manual (Page 213)

Cause Solution
The specific media type was not configured for
the tray or selected in the software. Configure the software for the media (see the
software documentation). Configure the tray for
the media, see
Configuring input trays .
Printer will not duplex or duplexes incorrectly
Cause Solution
You are trying to duplex on unsupported media. Verify that the media is supported for duplex
printing. See
Supported media weights and sizes .
The printer driver is not set up for duplex printing. Set up the printer driver to enable duplex printing.
The first page is printing on the back of
preprinted forms or letterhead. Load preprinted forms and letterhead in Tray 1
with the letterhead or printed side up and the
bottom of the page feeding into the printer. For
Tray 2, Tray 3, or Tray 4, load these media
printed side down with the top of the page
toward the back of the printer.
Output is curled or wrinkled (continued)
ENWW Media-handling problems 199