HP Officejet Pro 8500 - Manual (Page 204)

• 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 the scanner
glass or lid backing. Try cleaning the device. See
Clean the device for more
information.
• Copy is slanted or skewed
◦
Make sure that the ADF input tray is not too full.
◦ Make sure that the ADF width adjusters are snug against the sides of the media.
• Unclear text
◦
Try adjusting the contrast and copy-quality settings.
◦ The default enhancement setting might not be suitable for the job. Check the
setting and change it to enhance text or photographs, if needed. For more
information, see
Change the copy settings .
• Incompletely filled text or graphics
Try adjusting the contrast and copy-quality settings.
• Large, black typefaces look splotchy (not smooth)
The default enhancement setting might not be suitable for the job. Check the
setting and change it to enhance text or photographs, if needed. For more
information, see
Change the copy settings .
• Horizontal grainy or white bands in light-gray to medium-gray areas
The default enhancement setting might not be suitable for the job. Check the
setting and change it to enhance text or photographs, if needed. For more
information, see
Change the copy settings .
The device prints half a page, then ejects the paper
Check the ink cartridges
The ink cartridges may have run out of ink, and the print job was cancelled. Replace
the ink cartridges, and then resend the print job to the device. For more information,
see
Replace the ink cartridges .
Error messages appear
Reload document and then reload job
Press the OK button, and then reload the remaining documents (up to 20 pages) in
the ADF. For more information see
Load the originals .
Solve scan problems
If the following topics do not help, see Support and warranty for information about HP
support.
Chapter 11
200 Maintain and troubleshoot