HP Color LaserJet Pro MFP 4301-4303dw User Guide - Page 133

Improve fax image quality, Introduction, Check the scanner glass for dirt and smudges

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Improve fax image quality Review the following information to improve fax image quality. Introduction If the printer is having image quality problems, try the following solutions in the order presented to resolve the issue. Try these few simple steps first: ● Use the flatbed scanner rather than the document feeder. ● Use high-quality originals. ● When using the document feeder, load the original document into the feeder correctly, using the paper guides, to avoid unclear or skewed images. If the problem still exists, try these additional solutions. If they do not fix the problem, see "Improve print quality" for further solutions. Check the scanner glass for dirt and smudges Over time, specks of debris might collect on the scanner glass and white plastic backing, which can affect performance. Use the following procedure to clean the scanner. 1. Press the Power button to turn off the printer, and then disconnect the power cable from the electrical outlet. 2. Open the scanner lid. 3. Clean the scanner glass and the white plastic backing underneath the scanner lid with a soft cloth or sponge that has been moistened with nonabrasive glass cleaner. CAUTION: Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon tetrachloride on any part of the printer; these can damage the printer. Do not place liquids directly on the glass or platen. They might seep and damage the printer. 4. Dry the glass and white plastic parts with a chamois or a cellulose sponge to prevent spotting. 5. Connect the power cable to an outlet, and then press the Power button to turn on the printer. Check the send-fax resolution settings If the printer was unable to send a fax because the receiving fax machine did not answer or was busy, the printer attempts to redial based on the redial-on-busy, redial-on-no-answer, and redial-oncommunication-error options. 1. At the printer control panel, touch Fax. 2. Touch the icon to the left of the Send button, and then scroll to and touch Resolution. 3. Select one of the predefined options (Standard, Fine, or Superfine). 122 Chapter 9 Solve problems

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Improve fax image quality
Review the following information to improve fax image quality.
Introduction
If the printer is having image quality problems, try the following solutions in the order presented to
resolve the issue.
Try these few simple steps first:
●
Use the flatbed scanner rather than the document feeder.
●
Use high-quality originals.
●
When using the document feeder, load the original document into the feeder correctly, using the
paper guides, to avoid unclear or skewed images.
If the problem still exists, try these additional solutions. If they do not fix the problem, see "Improve print
quality" for further solutions.
Check the scanner glass for dirt and smudges
Over time, specks of debris might collect on the scanner glass and white plastic backing, which can
affect performance. Use the following procedure to clean the scanner.
1.
Press the Power button to turn off the printer, and then disconnect the power cable from the
electrical outlet.
2.
Open the scanner lid.
3.
Clean the scanner glass and the white plastic backing underneath the scanner lid with a soft cloth
or sponge that has been moistened with nonabrasive glass cleaner.
CAUTION:
Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon
tetrachloride on any part of the printer; these can damage the printer. Do not place liquids directly
on the glass or platen. They might seep and damage the printer.
4.
Dry the glass and white plastic parts with a chamois or a cellulose sponge to prevent spotting.
5.
Connect the power cable to an outlet, and then press the Power button to turn on the printer.
Check the send-fax resolution settings
If the printer was unable to send a fax because the receiving fax machine did not answer or was
busy, the printer attempts to redial based on the redial-on-busy, redial-on-no-answer, and redial-on-
communication-error options.
1.
At the printer control panel, touch
Fax
.
2.
Touch the icon to the left of the
Send
button, and then scroll to and touch
Resolution
.
3.
Select one of the predefined options (Standard, Fine, or Superfine).
122
Chapter 9
Solve problems