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Image Defects; Image Defect Examples; Diameter Of Rollers - Brother MFC-8220 Service Manual

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8.

IMAGE DEFECTS

8.1

Image Defect Examples

I-1 Light
I-6 Black vertical
streaks
I-10 White horizontal
streaks
I-15 White spots
I-20 Downward fogging
of solid black
8.2

Diameter of Rollers

The diameter of each roller and the pitch which appears in the image are listed below;
No.
1
First Paper Feed Roller
2
Paper Feed Roller
3
Transfer Roller
4
Photosensitive Drum
5
Heat Roller
6
Pressure Roller
7
Development Roller
I-2 Dark
I-2 Dark
I-3 Completely blank
I-6 Black vertical
I-7 Black horizontal
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stripes
I-11 Faulty
I-12 Poor fixing
registration
I-16 Black spots
I-17 Black band
I-21 Horizontal lines
I-22 Light rain
Fig. 6-9
Parts Name
6-31
I-5 Dirt on back of paper
I-4 All black
I-8 Black vertical
I-9 White vertical
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I-13 Image distortion
I-18 Gray background
I-19 Hollow print
I-23 Ghost
I-24 Toner specks
Diameter (The pitch which
appears in the image)
φ 13.6 mm (42.7 mm)
φ 14.0 mm (44.0 mm)
φ 15.20 mm (47.7 mm)
φ 29.97 mm (94.1 mm)
φ 25.0 mm (78.5 mm)
φ 25.0 mm (78.5 mm)
φ 20.0 mm (39.0 mm)
MFC-8220
SERVICE MANUAL
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I-14 Faint print
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