HP Officejet 7500A E910 User Manual

							If prompted, choose your country/region, and then click Contact HP for information
on calling for technical support.
Cause:There was a problem with the printhead.
Printouts are faded or have dull colors
Try the following solutions if the colors in your printout are not as bright and intense as
you expected.
•
Solution 1: Check the print settings
•
Solution 2: Check the paper type
•
Solution 3: Check the ink levels
•
Solution 4: Clean the printhead
•
Solution 5: Contact HP support
Solution 1: Check the print settings
Solution:Check the print settings.
• Check the paper type setting to make sure it matches the type of paper loaded in
the input tray.
• Check the print quality setting and make sure it is not set too low.
Print the image with a high print quality setting, such as Best or Maximum dpi.
Cause:The paper type or print quality settings were set incorrectly.
If this did not solve the issue, try the next solution.
Solution 2: Check the paper type
Solution:HP recommends that you use HP papers or any other paper type that is
appropriate for the printer.
Always make sure the paper you are printing on is flat. For best results when printing
images, use HP Advanced Photo Paper.
Store specialty media in its original packaging inside a resealable plastic bag on a
flat surface in a cool, dry place. When you are ready to print, remove only the paper
you plan to use immediately. When you have finished printing, return any unused
photo paper to the plastic bag. This prevents the photo paper from curling.
For more information, see:
Select print media
Cause:The wrong kind of paper was loaded in the input tray.
If this did not solve the issue, try the next solution.
Solution 3: Check the ink levels
Solution:Check the estimated ink levels in the ink cartridges.
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							NOTE:Ink level alerts and indicators provide estimates for planning purposes
only. When you receive a low-ink alert, consider having a replacement cartridge
available to avoid possible printing delays. You do not need to replace the ink
cartridges until print quality becomes unacceptable.
For more information, see:
Check the estimated ink levels
Cause:The ink cartridges might have insufficient ink.
If this did not solve the issue, try the next solution.
Solution 4: Clean the printhead
Solution:If the previous solutions did not resolve the issue, try cleaning the
printhead.
After cleaning the printhead, print a print quality report. Evaluate the print quality
report to see if the print quality problem still exists.
For more information, see:
•
Printhead maintenance
•
Print and evaluate a print quality report
Cause:The printhead needed to be cleaned.
If this did not solve the issue, try the next solution.
Solution 5: Contact HP support
Solution:Contact HP support for service.
Go to: 
www.hp.com/support.
If prompted, choose your country/region, and then click Contact HP for information
on calling for technical support.
Cause:There was a problem with the printhead.
Printouts seem blurry or fuzzy
Try the following solutions if your printout is not sharp or unclear.
NOTE:For this issue, there is not a problem with your ink supplies. Therefore,
replacing the ink cartridges or printhead is not necessary.
TIP:After reviewing the solutions in this section, you can go to HPs Web site to see
if there is additional troubleshooting help. For more information, go to: 
www.hp.com/
support.
•Solution 1: Check the print settings
•
Solution 2: Use a higher quality image
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							•Solution 3: Print the image in a smaller size
•
Solution 4: Align the printhead
Solution 1: Check the print settings
Solution:Check the print settings.
• Check the paper type setting to make sure it matches the type of paper loaded in
the input tray.
• Check the print quality setting and make sure it is not set too low.
Print the image with a high print quality setting, such as Best or Maximum dpi.
Cause:The paper type or print quality settings were set incorrectly.
If this did not solve the issue, try the next solution.
Solution 2: Use a higher quality image
Solution:Use a higher resolution image.
If you print a photo or graphic and the resolution is too low, it appears blurry or fuzzy
when printed.
If a digital photo or rasterized graphic has been resized, it might be blurry or fuzzy
when printed.
Cause:The resolution of the image was low.
If this did not solve the issue, try the next solution.
Solution 3: Print the image in a smaller size
Solution:Reduce the size of the image and then print it.
If you are printing a photo or graphic, and the print size is set too high, it appears
blurry or fuzzy when printed.
If a digital photo or rasterized graphic has been resized, it can be blurry or fuzzy when
printed.
Cause:The image was printed in a larger size.
If this did not solve the issue, try the next solution.
Solution 4: Align the printhead
Solution:Align the printhead.
Aligning the printer can help ensure excellent print quality.
For more information, see:
Align the printhead
Cause:The printer needed to be aligned.
Print quality troubleshooting 109
 
						

							Vertical streaks
•Printouts have vertical streaks
Printouts have vertical streaks
Vertical Streaks are streaks that are parallel to the direction that the paper moved
through the printer.
Solution:HP recommends that you use HP papers or any other paper type that is
appropriate for the printer.
Always make sure the paper you are printing on is flat. For best results when printing
images, use HP Advanced Photo Paper.
Store specialty media in its original packaging inside a resealable plastic bag on a
flat surface in a cool, dry place. When you are ready to print, remove only the paper
you plan to use immediately. When you have finished printing, return any unused
photo paper to the plastic bag. This prevents the photo paper from curling.
NOTE:For this issue, there is not a problem with your ink supplies. Therefore,
replacing the ink cartridges or printhead is not necessary.
For more information, see:
Select print media
Cause:The wrong kind of paper was loaded in the input tray.
Printouts are slanted or skewed
Try the following solutions if your printout does not appear straight on the page.
•
Solution 1: Make sure the paper is loaded correctly
•
Solution 2: Make sure only one type of paper is loaded
•
Solution 3: Ensure that the rear access panel is securely installed
Solution 1: Make sure the paper is loaded correctly
Solution:Make sure that the paper is loaded correctly in the input tray.
For more information, see:
Load media
Cause:The paper was not loaded correctly.
If this did not solve the issue, try the next solution.
Solution 2: Make sure only one type of paper is loaded
Solution:Load only one type of paper at a time.
Cause:More than one type of paper was loaded in the input tray.
If this did not solve the issue, try the next solution.
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110 Solve a problem
 
						

							Solution 3: Ensure that the rear access panel is securely installed
Solution:Make sure that the rear door is securely installed.
If you removed the rear door to clear a paper jam, replace it. Gently push the door
forward until it snaps into place.
Cause:The rear door was not securely installed.
Ink streaks on the back of the paper
Try the following solutions if there is smeared ink on the back of your printout.
•
Solution 1: Print on a page of plain paper
•
Solution 2: Wait while the ink dries
Solution 1: Print on a page of plain paper
Solution:Print one or several pages of plain paper to soak up any excess ink in
the printer.
To remove excess ink using plain paper
1.Load several sheets of plain paper in the input tray.
2.Wait five minutes.
3.Print a document with little or no text.
4.Check the back of the paper for ink. If there is still ink on the back of the paper,
try printing on another page of plain paper.
Cause:Ink accumulated inside the printer, where the back of the paper rests during
printing.
If this did not solve the issue, try the next solution.
Solution 2: Wait while the ink dries
Solution:Wait at least thirty minutes for the ink inside the printer to dry, then try the
print job again.
Cause:The excess ink in the printer needed to dry out.
Poor black text
Try the following solutions if the text in your printouts is not sharp and the edges are rough.
•
Solution 1: Wait before you attempt to reprint
•
Solution 2: Use TrueType or OpenType fonts
•
Solution 3: Align the printhead
•
Solution 4: Clean the printhead
Solution 1: Wait before you attempt to reprint
Solution:If the black cartridge is new, allow time for automatic servicing to clear
up the problem. Black print quality should start to improve in a few hours. If you do
Print quality troubleshooting 111
 
						

							not have time to wait, you can clean the printhead, but this uses more ink, and the
poor black text may reoccur until automatic servicing is allowed to complete.
Cause:Many black print quality problems clear up when the automatic services are
performed.
Solution 2: Use TrueType or OpenType fonts
Solution:Use TrueType or OpenType fonts to ensure that the printer is able to print
smooth fonts. When selecting a font, look for the TrueType or OpenType icon.
TrueType iconOpenType icon
Cause:The font was a custom size.
Some software applications offer custom fonts that have jagged edges when enlarged
or printed. Also, if you want to print bitmapped text, it might have jagged edges when
enlarged or printed.
If this did not solve the issue, try the next solution.
Solution 3: Align the printhead
Solution:Align the printhead.
Aligning the printer can help ensure excellent print quality.
For more information, see:
Align the printhead
Cause:The printer needed to be aligned.
If this did not solve the issue, try the next solution.
Solution 4: Clean the printhead
Solution:If the previous solutions did not resolve the issue, try cleaning the
printhead.
After cleaning the printhead, print a print quality report. Evaluate the print quality
report to see if the print quality problem still exists.
For more information, see:
•
Printhead maintenance
•
Print and evaluate a print quality report
Cause:The printhead needed to be cleaned.
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							The printer prints slowly
Try the following solutions if the printer is printing very slowly.
•
Solution 1: Use a lower print quality setting
•
Solution 2: Check the ink levels
•
Solution 3: Contact HP support
Solution 1: Use a lower print quality setting
Solution:Check the print quality setting. Best and Maximum dpi provide the best
quality but are slower than Normal or Draft. Draft provides the fastest print speed.
Cause:The print quality was set to a high setting.
If this did not solve the issue, try the next solution.
Solution 2: Check the ink levels
Solution:Check the estimated ink levels in the ink cartridges.
NOTE:Ink level alerts and indicators provide estimates for planning purposes
only. When you receive a low-ink alert, consider having a replacement cartridge
available to avoid possible printing delays. You do not need to replace the ink
cartridges until print quality becomes unacceptable.
For more information, see:
Check the estimated ink levels
Cause:The ink cartridges might have insufficient ink. Insufficient ink may cause the
printhead to overheat. When the printhead overheats, the printer slows down to allow
it to cool.
If this did not solve the issue, try the next solution.
Solution 3: Contact HP support
Solution:Contact HP support for service.
Go to: 
www.hp.com/support.
If prompted, choose your country/region, and then click Contact HP for information
on calling for technical support.
Cause:There was a problem with the printer.
Printhead maintenance
If you are experiencing problems with printing, you might have a problem with the
printhead. You should perform the procedures in the following sections only when
directed to do so for resolving print quality issues.
Performing the aligning and cleaning procedures unnecessarily can waste ink and
shorten the life of the cartridges.
Print quality troubleshooting 113
 
						

							This section contains the following topics:
•
Clean the printhead
•
Align the printhead
•
Print and evaluate a print quality report
•
Advanced printhead maintenance
•
Advanced ink cartridge maintenance
Clean the printhead
If your printed output is streaked or has any incorrect or missing colors, the printhead
might need to be cleaned.
There are two stages of cleaning. Each stage lasts about two minutes, uses one sheet
of paper, and uses an increasing amount of ink. After each stage, review the quality of
the printed page. You should only initiate the next phase of cleaning if the print quality is
poor.
If print quality still seems poor after you complete both stages of cleaning, try aligning the
printer. If print quality problems persist after cleaning and aligning, contact HP support.
NOTE:Cleaning uses ink, so clean the printheads only when necessary. The
cleaning process takes a few minutes. Some noise might be generated in the process.
Before cleaning the printheads, make sure you load paper. For more information, see
Load media.
Not turning the printer off correctly can cause print quality problems. For more
information, see 
Turn off the printer.
To clean the printhead from the control panel
1.Load letter, A4, or legal unused plain white paper into the main input tray.
2.Touch right arrow 
, and then select Setup.
3.Touch Tools, and then select Clean Printhead.
Align the printhead
The printer automatically aligns the printhead during the initial setup.
You might want to use this feature when the printer status page shows streaking or white
lines through any of the blocks of color or if you are having print quality issues with your
printouts.
To align the printhead from the control panel
1.Load letter, A4, or legal unused plain white paper into the main input tray.
2.On the printer control panel, touch right arrow 
, and then touch Setup.
3.Touch Tools, and then select Align Printer.
Print and evaluate a print quality report
Print quality problems can have many causes: software settings, a poor image file, or the
printing system itself. If you are unhappy with the quality of your prints, a Print Quality
Diagnostic page can help you determine if the printing system is working correctly.
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							This section includes the following topics:
•
To print a print quality report
•
To evaluate the Print Quality Diagnostic Page
To print a print quality report
Control panel: Touch Setup, select Print Report, select Printer Status or Self-Test,
and then click OK
To evaluate the Print Quality Diagnostic Page
This section includes the following topics:
•
Ink Levels
•
Good color bars
•
Ragged, irregularly streaked, or faded bars
•
Regular white streaks in the bars
•
Bar colors are not uniform
•
Large Black Font Text
•
Alignment Patterns
•
If you see no defects
Print quality troubleshooting 115
 
						

							Ink Levels
▲Look at the Ink Level indicators in Line 21. If any of the bar level indicators are low,
you may need to replace that ink cartridge.
NOTE:Ink level warnings and indicators provide estimates for planning
purposes only. When you receive an ink alert message, consider having a
replacement cartridge available to avoid possible printing delays. You do not need
to replace cartridges until print quality becomes unacceptable.
Good color bars
Example of Good Color BarsAll seven bars are solid, sharp-edged, and extend with uniform
color all the way across the page - the printer is operating correctly.
▲Look at the color bars in the middle of the page. There should be seven color bars.
The color bars should have sharp edges. They should be solid (not streaked with
white or other colors). They should be uniform in color throughout.
The bars correspond to the ink cartridges in the printer as follows:
ItemCartridge color
1Black Ink Cartridge
2Cyan Ink Cartridge
3Magenta Ink Cartridge
4Yellow Ink Cartridge
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