HP Officejet J5740 All-in-One Printer - Manual (Page 143)

Solution:
To clean the glass
1. Turn off the HP All-in-One, and raise the lid.
2. Clean the glass with a soft cloth or sponge slightly moistened with a nonabrasive
glass cleaner.
CAUTION: Do not use abrasives, acetone, benzene, or carbon tetrachloride
on the glass, since they can damage it. Do not place or spray liquid directly
on the glass. The liquid might seep under the glass and damage the device.
3. Dry the glass with a dry, soft, lint-free cloth to prevent spotting.
4. Turn on the HP All-in-One.
To clean the lid backing
1. Turn off the HP All-in-One, unplug the power cord, and raise the lid.
NOTE: Depending how long the HP All-in-One is unplugged, the date and
time might be erased. You might need to reset the date and time later, when
you plug the power cord back in.
2. Clean the white document backing with a soft cloth or sponge slightly moistened
with a mild soap and warm water.
Wash the backing gently to loosen debris. Do not scrub the backing.
3. Dry the backing with a dry, soft, lint-free cloth.
CAUTION: Do not use paper-based wipes, as these might scratch the
backing.
4. If further cleaning is needed, repeat the previous steps using isopropyl (rubbing)
alcohol, and wipe the backing thoroughly with a damp cloth to remove any residual
alcohol.
CAUTION: Be careful not to spill alcohol on the glass or exterior of the HP All-
in-One, as this might damage the device.
Printouts seem blurry or fuzzy
Cause: The fax sender is using a low resolution or the original was poor quality.
Solution: Ask the sender to increase the resolution and to verify the quality of the
original.
Cause: The paper loaded in the input tray is not suitable for the HP All-in-One.
Solution: If the paper you are using is too fibrous, the ink applied by the HP All-in-
One might not fully cover the surface of the paper. Use HP Premium Papers or any
other paper type that is appropriate for the HP All-in-One.
For more information on choosing paper, see
Understand specifications for supported
media .
Print quality troubleshooting 141