HP color laserjet 4500 Manuale Utente
182 Chapter 9 Image quality
EN
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There is dirt on the paper.
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The fusing rollers are dirty.
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The paper does not meet HP specifications.
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The toner cartridge is defective.
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The fusing assembly is defective.
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There is dirt in the printer.
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The static eliminator is dirty or is not grounded, allowing a static
charge to remain on a page.
charge to remain on a page.
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The DC controller PCA is defective.
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Check for a leak where light might be entering the printer.
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Check for circumferential scars on the photosensitive drum. If scars
are present, replace the drum cartridge if the line goes through all
colors.
are present, replace the drum cartridge if the line goes through all
colors.
•
Check for circumferential scars on the upper fusing roller. If scars
are present, replace the upper fusing roller if the line goes through
all colors.
are present, replace the upper fusing roller if the line goes through
all colors.
•
Remove the imaging drum cartridge and inspect main charger or
imaging drum for a contaminate such as a fiber if the line goes
through all colors.
imaging drum for a contaminate such as a fiber if the line goes
through all colors.
Note
Do not expose the drum to light for more than 15 seconds. The drum
is light sensitive, and exposure to light can cause permanent damage.
is light sensitive, and exposure to light can cause permanent damage.
Vertical black lines
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The toner cartridge is defective.
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The toner cartridge is not seated properly.
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The fuser entrance is dirty.
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The fuser has scratches on it.
Toner smear
Vertical lines or streaks