2-35
Confidential
4.2.11 Black horizontal stripes
Fig. 2-10
User Check
•
Clean the inside of the printer and the corona wire in the drum unit.
• When the horizontal stripes at 94.2 mm are intervals, replace the
drum unit with a new one.
• The paper tray ground terminal provided in the printer body may be
dirty. Clean the contact with a dry cloth.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and the printer body
Clean the electrodes of the drum unit and
printer body. (Refer to Fig. 2-8, Fig. 2-9.)
2
Bend of tray ground spring (1)
Correct bending of the tray ground spring
.
(2) Replace the paper tray.
3
Toner attached on the develop
roller (horizontal stripes at 32.5
mm)
This problem will disappear by printing
approximate 10 pages. If the same problem
occurs, replace the toner cartridge.
4
Scratch and Dirt on the heat roller
(horizontal stripes at 53.4 mm)
Replace the fuser unit.
5
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
6 Main PCB failure Replace the main PCB ASSY.
CAUTION :
• Image defects which appear periodically may be caused by failure of a roller. Specify
the cause referring to the diameter of the rollers or pitch which appears in the image as
shown in the table below
No. Parts name
Diameter
The pitch which
appears in the image
1 Develop roller
Ø16 mm 32.5 mm
2 Exposure drum
Ø30 mm 94.2 mm
3 Heat roller in the fuser unit
Ø17 mm 53.4 mm
4 Pressure roller in the fuser unit
Ø25 mm 78.5 mm
Bottom surface of Paper tray
Paper tray ground terminal
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General
Weight and Dimensions
