Table 2-64 Image defects table (continued)
Problem Sample Cause Solution
Bubble or cloud print.
Customers might describe an
image quality defect that
resembles bubbles. This defect
typically starts near the edges of
the pages, but in severe cases it
might cover most or all the page.
Bubble print is most often
related to poor grounding of the
imaging drum and is typically
caused by damaged grounding
contacts.
1. Inspect the grounding contacts
inside the product. Look for
damaged, loose, misaligned,
contaminated, or obstructed
contacts. Clean contaminated
contacts. If possible, repair bent
or mis aligned contacts.
2. Verify that the grounding
contacts or springs are properly
positioned such that they make
positive contact with the
grounding point on the cartridge.
3. Inspect the cartridge itself to
make sure that the grounding
points are not damaged,
contaminated or obstructed. If
damaged, replace the cartridge.
4. If another cartridge is available,
test the product using that
cartridge.
5. If the error persists, escalate the
problem to the Global Business
Unit.
Tire Tracks.
This defect typically occurs
when the toner cartridge has far
exceeded its rated life.
Replace the toner cartridge.
490 Chapter 2 Solve problems ENWW
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