HP Officejet Pro 8500 User Manual

To clean the glass strip inside the automatic document feeder (two-line display)
1.Turn off the HP all-in-one, and unplug the power cord.
NOTE: Depending how long the HP all-in-one is unplugged, the date and time
might be erased. You might need to reset the date and time later, when you
plug the power cord back in.
2. Raise the lid, as if you were loading an original on the glass.
3.Lift the cover of the automatic document feeder.
Clean the device 187
 

4.Lift the automatic document feeder mechanism, using the two hand grip areas in
the front and rear of the device.
There is a glass strip under the automatic document feeder.
5.Clean the glass strip with a soft cloth or sponge slightly moistened with a
nonabrasive glass cleaner.
CAUTION: Do not use abrasives, acetone, benzene, or carbon tetrachloride
on the glass, since they can damage it. Do not place or spray liquid directly on
the glass. The liquid might seep under the glass and damage the device.
6....

• Make sure that the power light is on and not blinking. When the device is turned onfor the first time, it takes approximately 20 minutes to initialize it after the
printheads are installed.
• Make sure that the power cord and other cables are working, and are firmly connected to the device. Make sure the device is connected firmly to a functioning
alternating current (AC) power outlet, and is turned on. For voltage requirements,
see 
Electrical specifications .
• Make sure that the media is loaded...

The device shuts down unexpectedly
Check the power and power connections
Make sure the device is connected firmly to a functioning alternating current (AC)
power outlet. For voltage requirements, see 
Electrical specifications.
Error message appears on control-panel display
A non-recoverable error has occurred
Disconnect all cables (such as power cord, network cable, and USB cable), wait about
20 seconds, and reconnect the cables. If the problem persists, visit the HP Web site
(
www.hp.com/support ) for...

Check any personal firewall software installed on the computer
The personal software firewall is a security program that protects a computer from
intrusion. However, the firewall might block communication between the computer and
the device. If there is a problem communicating with the device, try temporarily
disabling the firewall. If the problem persists, the firewall is not the source of the
communication problem. Re-enable the firewall. For more information, see 
Configure
your firewall to work with...

Check the margin settings
If the text or graphics are cut off at the edges of the page, make sure the margin
settings for the document do not exceed the printable area of your device. For more
information, see 
Supported devices.
Check the page-orientation setting
Make sure the media size and page orientation selected in the application match the
settings in the printer driver. For more information, see 
Change print settings .
Check the device location and length of USB cable
It is recommended that you...

General print quality troubleshooting
Check the printheads and ink cartridges
Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any
problem areas, and perform the recommended actions. For more information, see 
To
print the print quality diagnostic page.
Check the paper quality
Make sure the media meets HP specifications, and try to print again. For more
information, see 
Select print media .
Check the type of media loaded in the device
• Make sure the tray supports the...

Ink is smearing
Check the print settings
• When you print documents that use a lot of ink, allow more time to dry beforehandling the printouts. This is especially true for transparencies. In the printer
driver, select the Best  print quality, and also increase the ink drying time and
reduce the ink saturation, using the ink volume under the advanced features
(Windows) or ink features (Mac OS X). However, note that decreasing ink
saturation might give printouts a washed-out quality.
• Color documents that...

Colors are printing as black and white
Check the print settings
Make sure Print in Grayscale  is not selected in the printer driver.
Wrong colors are printing
Check the print settings
Make sure Print in Grayscale  is not selected in the printer driver.
Check the printheads
Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any
problem areas, and perform the recommended actions. For more information, see 
To
print the print quality diagnostic page .
Printout shows bleeding...

Rotate the image
• If the problem persists, use the software you installed with the product or anothersoftware application to rotate your image 180 degrees so that the light blue, gray,
or brown hues in your image do not print at the bottom of the page. The defect is
more noticeable in areas of uniform light colors, so rotating the image may help.
• There could be a problem with the printhead. Clean the printhead. For more information, see 
To clean the printheads .
Colors do not line up properly
Check...