Brother International MFC-P2000 Service Manual - Page 86
Black spots, Place the printing samples in front of the process unit, and find the exact
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I-15 Black spots Possible cause Drum unit Fixing unit High-voltage power supply PCB Step 1 2 3 Check Are the spots at 94 mm intervals? The problem is not solved after printing a few pages. Are the spots at 63 mm intervals? The problem is not solved after printing a few pages. Is the problem solved after the high-voltage power supply PCB is replaced? Result Yes Yes Yes Remedy If toner remains stuck, wipe it off gently with a cotton swab. Replace the drum unit if the photosensitive drum is scratched or deteriorated (exposed). (Refer to the following note.) Check and clean the heat roller with a cloth dampened with alcohol. Replace the fixing unit. Replace the high-voltage power supply PCB. Note: Clean the drum unit as follows: (1) Place the printing samples in front of the process unit, and find the exact position of the image defect. Position of smudge on the drum 94 mm interval Fig. 4-2 (2) Turn the drum gear by hand while looking at the surface of the photosensitive drum. Fig. 4-3 IV-17
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