Assessments - 2, GPA: 3
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6. Troubleshooting 292 Printing quality problems Printing quality problems Condition Suggested solutions Toner specks • The paper may not meet specifications; for example, the paper may be too moist or rough. • The transfer roller may be dirty. Clean the inside of your machine (see "Cleaning the machine" on page 81). AaBbCc • The paper path may need cleaning. Contact a service representative (see "Cleaning the machine" on page 81). AaBbCc AaBbCc AaBbCc AaBbCc Dropouts If faded areas, generally rounded, occur randomly on the page: • A single sheet of paper may be defective. Try reprinting the job. AaBbC AaBbC • The moisture content of the paper is uneven or the paper has moist spots on its surface. Try a different brand of paper. AaBbC • The paper lot is bad. The manufacturing processes can cause some areas to reject toner. Try a different kind or brand of paper. AaBbC • Change the printer option and try again. Go to Printing Preferences, click the Paper tab, and set type to Thick (see "Opening AaBbC printing preferences" on page 55). If these steps do not correct the problem, contact a service representative. White Spots If white spots appear on the page: • The paper is too rough and a lot of dirt from paper falls to the inner components within the machine, so the transfer roller may be dirty. Clean the inside of your machine (see "Cleaning the machine" on page 81). • The paper path may need cleaning. Clean the inside of your machine (see "Cleaning the machine" on page 81). If these steps do not correct the problem, contact a service representative. 6. Troubleshooting 293 Printing quality problems Printing quality problems Condition Suggested solutions Vertical lines If black vertical streaks appear on the page: • The surface (drum part) of the toner cartridge inside the machine has probably been scratched. Remove the toner cartridge and install a new one (see "Replacing the toner cartridge" on page 77). If white vertical streaks appear on the page: • The surface of the LSU part inside the machine may be dirty. Clean the inside of your machine (see "Cleaning the machine" on page 81). If these steps do not correct the problem, contact a service representative. Black or color background If the amount of background shading becomes unacceptable: • Change to a lighter weight paper. • Check the environmental conditions: very dry conditions or a high level of humidity (higher than 80% RH) can increase the amount of background shading. • Remove the old toner cartridge and install a new one (see "Replacing the toner cartridge" on page 77). • Thoroughly redistribute the toner (see "Redistributing toner" on page 75). Toner smear • Clean the inside of the machine (see "Cleaning the machine" on page 81). • Check the paper type and quality. • Remove the toner cartridge and install a new one (see "Replacing the toner cartridge" on page 77). 6. Troubleshooting 294 Printing quality problems 6. Troubleshooting 295 Vertical repetitive defects If marks repeatedly appear on the printed side of the page at even intervals: • The toner cartridge may be damaged. If you still have the same problem, remove the toner cartridge and, install a new one (see "Replacing the toner cartridge" on page 77). • Parts of the machine may have toner on them. If the defects occur on the back of the page, the problem will likely correct itself after a few more pages. • The fusing assembly may be damaged. Contact a service representative. Background scatter Background scatter results from bits of toner randomly distributed on the printed page. • The paper may be too damp. Try printing with a different batch of paper. Do not open packages of paper until necessary so that the paper does not absorb too much moisture. • If background scatter occurs on an envelope, change the printing layout to avoid printing over areas that have overlapping seams on the reverse side. Printing on seams can cause problems. Or select Thick from the Printing Preferences window (see "Opening printing preferences" on page 55). • If background scatter covers the entire surface area of a printed page, adjust the print resolution through your software application or in Printing Preferences (see "Opening printing preferences" on page 55). Ensure the correct paper type is selected. For example: If Thicker Paper is selected, but Plain Paper actually used, an overcharging can occur causing this copy quality problem. • If you are using a new toner cartridge, redistribute the toner first (see "Redistributing toner" on page 75). Toner particles are around bold characters or pictures The toner might not adhere properly to this type of paper. • Change the printer option and try again. Go to Printing Preferences, click the Paper tab, and set the paper type to Recycled (see "Opening printing preferences" on page 55). • Ensure the correct paper type is selected. For example: If Thicker Paper is selected, but Plain Paper actually used, an overcharging can occur causing this copy quality proble...
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