HP Designjet 8000 HP Designjet 8000s Printer Series - User's Guide - Page 154

The problem is print quality

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The problem is print quality Symptom Possible cause Corrective measure Parts of a printed image are missing even after printhead cleaning is performed repeatedly. The nozzle is clogged. Wash the printheads. See How do I... Clean ink system Poor print quality cannot be improved even when the cleaning is performed. The cap or wiper blade is stained. Clean the cap and change the wiper blade. See How do I maintain the printer There is banding on new media The printer requires calibration for the new media. Adjust the printer settings for the new media. See How do I calibrate my printer There is banding on media that has been calibrated and did not give banding before. If one of the following is true, try the corresponding solution and if banding has not disappeared, then go to the next possible cause and solution: 1. The file you are printing: a) is new Try one of the following solutions: 1. a) Try using a file that did not give banding. If banding does not disappear, then see the next possible cause. b) Check that you are using the same print mode as before. b) is not new 2. The print mode: a) has changed b) has not changed 3. Normal printhead recovery: a) did not improve banding b) improved banding 4. Strong printhead recovery: a) did not improve banding b) improved banding 2. a) Try using the same print mode. If banding does not improve, then try a new roll of media. If you still see banding call HP support. b) Try normal printhead recovery. If banding improves, repeat normal printhead recovery until no improvement is seen and banding is still present. Call HP support. 3. a) Print the NOZZLE PRINT pattern and check if there are any printhead nozzles not working. If some printheads are not working, try strong printhead recovery for the affected printheads. 4. a) Call HP support b) Repeat normal printhead recovery until no improvement is seen and banding is still present. Call HP support. 144 Chapter 9 The problem is print quality ENWW

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Symptom
Possible cause
Corrective measure
Parts of a printed image are missing even
after printhead cleaning is performed
repeatedly.
The nozzle is clogged.
Wash the printheads. See How do I…
Clean ink system
Poor print quality cannot be improved
even when the cleaning is performed.
The cap or wiper blade is stained.
Clean the cap and change the wiper
blade. See
How do I maintain the printer
There is banding on new media
The printer requires calibration for the
new media.
Adjust the printer settings for the new
media. See
How do I calibrate my printer
There is banding on media that has been
calibrated and did not give banding
before.
If one of the following is true, try the
corresponding solution and if banding
has not disappeared, then go to the next
possible cause and solution:
1. The file you are printing:
a) is new
b) is not new
2. The print mode:
a) has changed
b) has not changed
3. Normal printhead recovery:
a) did not improve banding
b) improved banding
4. Strong printhead recovery:
a) did not improve banding
b) improved banding
Try one of the following solutions:
1. a) Try using a file that did not give
banding. If banding does not disappear,
then see the next possible cause.
b) Check that you are using the same
print mode as before.
2. a) Try using the same print mode. If
banding does not improve, then try a new
roll of media. If you still see banding call
HP support.
b) Try normal printhead recovery. If
banding improves, repeat normal
printhead recovery until no improvement
is seen and banding is still present. Call
HP support.
3. a) Print the NOZZLE PRINT pattern
and check if there are any printhead
nozzles not working. If some printheads
are not working, try strong printhead
recovery for the affected printheads.
4. a) Call HP support
b) Repeat normal printhead recovery
until no improvement is seen and
banding is still present. Call HP support.
144
Chapter 9
The problem is print quality
ENWW
The problem is print quality