Brother International HL 1850 Users Manual - English - Page 165

Replacing the drum unit

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Image Defect Examples 94 mm (3.7 in.) 94 mm (3.7 in.) Recommendation ! Caution Do not try to clean the surface of the drum with anything sharp, such as a ballpoint pen. White Spots Printed pages have white spots in black text and graphics at intervals of 94 mm (3.7 in.). • The drum unit may be damaged. Put in a new drum unit. See "Replacing the drum unit" in Chapter 5. 94 mm (3.7 in.) 94 mm (3.7 in.) Printed pages have black spots at intervals of 94 mm (3.7 in.). 6-26

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6-26
Image Defect Examples
Recommendation
94 mm
(3.7 in.)
94 mm
(3.7 in.)
White Spots
Printed pages have white spots in black
text and graphics at intervals of 94 mm
(3.7 in.).
94 mm
(3.7 in.)
94 mm
(3.7 in.)
Printed pages have black spots at
intervals of 94 mm (3.7 in.).
!
Caution
Do not try to clean the surface of the drum with anything sharp, such
as a ballpoint pen.
•
The drum unit may be damaged. Put in a new drum unit.
See
“Replacing the drum unit” in Chapter 5.