HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 316)

Envelopes jam or will not feed in the MFP
Cause Solution
Envelope orientation is incorrect. Verify that the envelope is loaded correctly. See Configuring
input trays .
This MFP does not support the envelopes being used. See Supported media weights and sizes or the HP LaserJet
Printer Family Print Media Guide.
Tray 1 is configured for a size other than envelopes. Configure Tray 1 size for envelopes.
Output is curled or wrinkled
Output is curled or wrinkled
Cause Solution
Media does not meet the specifications for this MFP. Use only media that meets the HP media specifications for this
MFP. See
Supported media weights and sizes .
Media is damaged or in poor condition. Remove media from the input tray and load media that is in
good condition.
Printer is operating in an excessively humid environment. Verify that the printing environment is within humidity
specifications. See
Environmental specifications .
You are printing large, solid-filled areas. Large, solid-filled areas can cause excessive curl. Try using a
different pattern.
Media used was not stored correctly and might have absorbed
moisture. Remove media and replace it with media from a fresh,
unopened package.
Media has poorly cut edges. Remove media, flex it, rotate it 180 degrees or turn it over, and
then reload it into the input tray. Do not fan media. If the
problem persists, replace the media.
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
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 MFP. For Tray 2, 3, and 4, load these media
printed side down with the top of the page toward the back of
the MFP.
296 Chapter 12 Solving problems ENWW