HP OfficeJet Pro L7400 User Manual

Copy defects are apparent
•
Vertical white or faded stripes
The media might not meet Hewlett-Packard media specifications (for example, the
media is too moist or too rough). See 
Select print media for more information.
•
Too light or dark
Try adjusting the contrast and copy-quality settings.
•
Unwanted lines
The scanner glass, lid backing, or frame might need cleaning. See 
Clean the
device for more information.
•
Black dots or streaks
Ink, glue, correction fluid, or an unwanted substance might be on...

Scanner did nothing
•Check the original
Make sure that the original is placed on the scanner glass correctly. For more
information, see 
Load an original on the scanner glass.
•Check the device
The device might be coming out of PowerSave mode after a period of inactivity,
which delays processing a short while. Wait until the device reaches the READY
state.
Scan takes too long
•Check the settings
• If you set the resolution too high, the scan job takes longer and results in larger
files. To obtain good...

Text cannot be edited
•Check the settings
• Make sure that the OCR software is set to edit text.
• When you scan the original, make sure that you select a document type that
creates editable text. If text is classified as a graphic, it is not converted to text.
• Your OCR program might be linked to a word-processing program that does
not perform OCR tasks. See the product software Help for more information
about linking programs.
•Check the originals
• Make sure that you placed the original correctly on...

Text or images on the back of a two-sided original appear in the scan
Two-sided originals can bleed text or images from the back side to the scan if the
originals are printed on media that is too thin or too transparent.
The scanned image is skewed (crooked)
The original might have been placed incorrectly. Be sure to use the media guides
when you place the original on the scanner glass. For more information, see 
Load
originals.
The image quality is better when printed
The image that appears on the...

•
Black dots or streaks
• Ink, glue, correction fluid, or an unwanted substance might be on the scanner
glass, the scanner glass might be dirty or scratched, or the lid backing might be
dirty. Try cleaning the scanner glass and lid backing. See 
Clean the device for
more information. If cleaning does not correct the problem, the scanner glass
or lid backing might need to be replaced.
• The defects might be on the original and not a result of the scanning process.
•
Unclear text
Try adjusting the...

Check the computer system
• Make sure that your computer is running one of the supported operating systems.
• Make sure that the computer meets at least the minimum system requirements.
Check the device to ensure the following
• Power light is on and not blinking. When the device is first turned on, it takes
approximately 45 seconds to warm up.
• The device is in the Ready state, and no other lights on the control panel are lit or
blinking. If lights are lit or blinking, see the message on the control...

• In the Windows device manager, make sure that the USB drivers have not been
disabled.
• If you are using a computer running Windows, and the computer cannot detect the
device, run the uninstallation utility (util\ccc\uninstall.bat on the Starter CD) to
perform a clean uninstallation of the device driver. Restart your computer, and
reinstall the device driver.
Clear jams
Occasionally, media becomes jammed during a job. Try the following remedies before
you attempt to clear the jam.
• Make sure that you...

c. If the jam is not there, push the latch on the top of the duplexer and lower its
cover. If the jam is inside, carefully remove it. Close the cover.
d. Reinsert the rear access panel or the duplexer into the device.
3.If you cannot locate the jam, lift the output tray and check for a jam in Tray 1. If
media is jammed in the tray, do the following:
a. Raise the output tray.
b. Pull the paper toward you.
c. Lower the output tray.
4.Open the print carriage access door. If there is paper remaining inside...

Tips for avoiding jams
• Make sure that nothing is blocking the paper path.
• Do not overload the trays. For more information, see 
Understand specifications for
supported media.
• Load paper properly and when the device is not printing. For more information, see
Load media.
• When reinserting Tray 2 (optional) into the device, do so gently. Forceful insertion
with a full stack of paper may cause sheets to slide up within the device, causing it
to jam or pick multiple sheets at one time.
• Do not use...

A
HP supplies and accessories
This section provides information on HP supplies and accessories for the device. The information
is subject to changes, visit the HP Web site (www.hpshopping.com) for the latest updates. You
may also make purchases through the Web site.
•
Order printing supplies online
•
Accessories
•
Supplies
Order printing supplies online
Besides the HP Web site, you may order printing supplies using the following tools:
•Toolbox (Windows): On the Estimated Ink Level tab, click Shop...