HP DesignJet 510 1067 mm User Manual

Troubleshooting procedureWorking through the Troubleshooting procedure should always be your first action when you encounter print 
quality problems. Refer to the Troubleshooting flowchart
 for a description of the sequence of processes used to 
complete troubleshooting procedure.
It is important that the paper loaded for this procedure is exactly that used when you encountered print quality 
problems, type (for example, glossy paper) and size. If you use a different kind of paper or a different size,...

Diagnostic Print A interpretation
Diagnostic Print A contains several blocks of color and a block of thin black 
broken lines (the lines are actually very much closer than those represented 
here).1. Examine the broken lines in Diagnostic Print A carefully and indicate whether 
there are problems with them. The sorts of problems to look for here are:
• Jaggedness or serrations in the thin lines, like this:  ; the thin lines should be straight, 
though not necessarily perfectly aligned. The irregularities...

Diagnostic Print B interpretation1. For each color in the pattern in Diagnostic Print B, you are asked about the 
quality—look for missing lines. If you answer that a color is defective, the 
printer tries to clean that printhead.
If the printhead cleaning process completes,  Diagnostic Print B is printed 
again and you are asked the same questions again.
2. Afterwards, if problems with images remain, use the  Troubleshooting 
procedure again.If none of the patterns or blocks in the two  Diagnostic...

Troubleshooting flowchart
The following diagram shows the flow of the troubleshooting procedure.
Printer checks 
whether Printhead 
Alignment is required Printer recommends 
Printhead alignment
 
(Standard or Special)
Printer prints 
Diagnostic Print A 
including black lines
Printer asks questions  about Diagnostic  Print A
Wrong paper advance. Printer recommends Advance calibration
Printheads need 
cleaning. If possible 
printer tries to clean  printheads
Printer prints 
Diagnostic Print A 
without...

Advance calibrationIt is important that the paper loaded for this calibration is exactly that used for normal printing, both in quality (for 
example, glossy paper) and in width (for example, A0 or 36 in). Either roll or sheet paper can be used.
The routine prints a pattern and then cuts the roll (the cutter must be set to On—see Controlling the cutter
) or 
ejects the sheet; it requires paper that is at least 65 cm/25.5 in long and at least 50 cm/19.7 in wide. You must 
then reload that piece of paper...

Advance calibration values
The printer stores the advance calibration values of the last two 
different types of paper used for the calibration. When you print, the 
printer tries to match the paper you have selected to the stored 
values. If there is a match the printer applies the stored Advance 
calibration values.
If the type of paper you are using has not been used for either of the 
last two Advance calibrations, the printer uses a set of default values 
for your paper.
The Restore factory option...

Stepped linesWhen you look at the image you have printed there are ‘stepped lines’ in the borders of arrows and diagonal 
lines. The lines should be straight with no stepping.
The following is an example of what you might see if you have problems with stepped lines.
To solve this problem:
1. Increase the dpi setting by changing the print quality to  Best in the front panel and driver software.
2. The problems may be inherent in the image you are trying to print. Try to improve the image with the...

Incomplete linesWhen you look at the image you have printed there are:
• Missing or faint lines.
• Printed characters with missing parts.
The following is an example of what you might see if you have problems with incomplete lines.
See the Troubleshooting procedure
 for instructions on how to solve this problem.
Missing parts of text; this 
should say TEST
TEST
 

Color alignmentWhen you look at the image you have printed:
See the Troubleshooting procedure
 for instructions on how to solve this problem.
The colored lines are printed 
double and they are the wrong 
colors Vertical lines are misaligned or 
fuzzy (not smooth)
The borders of colored blocks 
are overlapped and the 
overlapping areas have 
different colors in them.
 

Horizontal bandingWhen you look at the image you have printed there are light or dark lines on the image, these are particularly 
highlighted in high density ink areas. This problem is known as banding.
IMPORTANTBanding can occur to a certain degree in Fast and Normal mode when printing high 
density prints. To obtain the best image always print in Best Mode.
The following is an example of what you might see if you have problems with banding.
See the  Troubleshooting procedure
 for instructions on how to...