Ricoh SP 1200S Service Manual Page 347

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  • TROUBLESHOOTING
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Image Defect Troubleshooting (Defect of the Print)
SM 6-45 M085/M086
Trouble –
shooting
9. Vertical streaks 20. Ghost
10. Black vertical streaks in a light
background
21. Fogging
11. Black horizontal stripes
The image defect at the copy might have the cause in the scanning.
When the failure does not reproduce by print the test pattern “MAINTENANCE 09” or
PC print, refer to p.6-66 "Troubleshooting of Scanning".
6.5.2 DIAMETER OF ROLLERS
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 Ø20.0 mm 40.6 mm
2 Exposure drum Ø24.0 mm 75.0 mm
3 Heat roller in the fuser unit Ø25.0 mm 78.5 mm
4
Pressure roller ASSY in the fuser
unit
Ø25.0 mm 78.5 mm
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