HP Color LaserJet Enterprise MFP M680 series - Page 500

Table 2-64 Image defects table (continued)
Problem Sample Cause Solution
Vertical streaks or bands appear
on the page.
Scratches are present on the
circumference of the
developing cylinder or
photosensitive drum.
Replace the toner cartridge of the
color that matches the defect.
Scratches are present on the
circumference of the fuser
roller.
Replace the fuser.
Scratches are present on the
circumference of the ITB.
Replace the ITB.
The ITB drive roller is deformed
or has deteriorated.
The ITB cleaning mechanism is
malfunctioning.
Streaks on document feeder scans
(M680).
Dark or light streak from leading
edge to trailing edge on pages
scanned through the ADF.
NOTE: For mono scans, the
streak is dark. For color scans, the
streak is the color of the
contamination. For solid black fills,
the streak might be green, blue, or
white.
The ADF glass (small glass to
the left of the flatbed glass) is
contaminated.
Clean the glass with a water-
dampened lint-free cloth.
TIP: Align a printed page with the
streak on it with the glass, to help find
the location of the contamination.
476 Chapter 2 Solve problems ENWW