Periodic Defective Image - Samsung CLP-775ND Series Service Manual

3) Press up/down arrow to highlight Auto Color Reg. and press OK.
4) The display shows Run Now?
Registration.

4.1.5. Periodic Defective Image

If a mark or other printing defects occur at regular intervals down on the page, they may be caused by damaged or
contaminated rollers. Use the table below to find which roller causes the defect from the periods of the rollers. If the roller is
dirty, try to clean it. If the problem still remains after cleaning, replace the part including the defective roller.
Roller
Fuser Belt
Pressure Roller
OPC Drum
Deve Roller (CMY)
Deve Roller (K)
Supply Roller (CMY)
Supply roller (K)
Transfer Roller
PTB charge roller
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Yes / No , then select yes or no. And press the OK to conduct the Auto Color
Period (mm)
125.7 mm Waving, Offset, Spot, Line Burst
91 mm Offset, Spot, Line Burst
White and Black Spot, Periodic Banding, Ghost, Color
75.39 mm
Registration
36.1 mm White Spot, Horizontal Band
35.5 mm White Spot, Horizontal Band
48.2 mm Offset, Spot, Line Burst
47.4 mm Offset, Spot, Line Burst
44 mm Periodic Band (by little difference of density)
31.4 mm White and Black Spot, Periodic Banding
4. Alignment and Troubleshooting
Phenomenon Defective part
Fuser Unit
Fuser Unit
Corresponding toner
cartridge
Corresponding toner
cartridge
Corresponding toner
cartridge
Corresponding toner
cartridge
Corresponding toner
cartridge
Paper Transfer Belt
unit
Paper Transfer Belt
unit
4-8