HP LaserJet Pro 400 Service Manual - Page 221

Problem, Cause, Solution, repeated image displays.

Page 221 highlights

Problem Text or graphics are skewed on the printed page. Cause Solution The media might be loaded incorrectly. Ensure that the paper or other print media is loaded correctly and that the media guides are not too tight or too loose against the stack. The media might not meet HP specifications. Use a different paper, such as highquality paper that is intended for color laser printers. The printed page contains wrinkles or creases. Toner displays around the printed characters. The media might be loaded incorrectly. Verify that the media is loaded correctly and that the media guides are not too tight or too loose against the stack. Turn over the stack of paper in the input tray, or try rotating the paper 180° in the input tray. The media might not meet HP specifications. Use a different paper, such as highquality paper that is intended for color laser printers. The media might be loaded incorrectly. Turn over the stack of paper in the tray. If large amounts of toner have scattered around the characters, the paper might have high resistivity. Use a different paper, such as highquality paper that is intended for color laser printers. An image that displays at the top of the page (in solid black) repeats farther down the page (in a gray field). Software settings might affect image printing. In your software program, change the tone (darkness) of the field in which the repeated image displays. In your software program, rotate the whole page 180° to print the lighter image first. The order of images printed might affect printing. Change the order in which the images are printed. For example, have the lighter image at the top of the page, and the darker image farther down the page. A power surge might have affected the device. If the defect occurs later in a print job, turn the device off for 10 minutes, and then turn on the device to restart the print job. Use non-glossy media to help reduce the severity of the defect ENWW Solve image-quality problems 195

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Problem
Cause
Solution
Text or graphics are skewed on the
printed page.
The media might be loaded incorrectly.
Ensure that the paper or other print
media is loaded correctly and that the
media guides are not too tight or too
loose against the stack.
The media might not meet HP
specifications.
Use a different paper, such as high-
quality paper that is intended for color
laser printers.
The printed page contains wrinkles or
creases.
The media might be loaded incorrectly.
Verify that the media is loaded correctly
and that the media guides are not too
tight or too loose against the stack.
Turn over the stack of paper in the input
tray, or try rotating the paper 180° in
the input tray.
The media might not meet HP
specifications.
Use a different paper, such as high-
quality paper that is intended for color
laser printers.
Toner displays around the printed
characters.
The media might be loaded incorrectly.
Turn over the stack of paper in the tray.
If large amounts of toner have scattered
around the characters, the paper might
have high resistivity.
Use a different paper, such as high-
quality paper that is intended for color
laser printers.
An image that displays at the top of the
page (in solid black) repeats farther
down the page (in a gray field).
Software settings might affect image
printing.
In your software program, change the
tone (darkness) of the field in which the
repeated image displays.
In your software program, rotate the
whole page 180° to print the lighter
image first.
The order of images printed might affect
printing.
Change the order in which the images
are printed. For example, have the
lighter image at the top of the page, and
the darker image farther down the
page.
A power surge might have affected the
device.
If the defect occurs later in a print job,
turn the device off for 10 minutes, and
then turn on the device to restart the
print job.
Use non-glossy media to help reduce the
severity of the defect
ENWW
Solve image-quality problems
195