Brother International HL 5030 Service Manual - Page 209
Dirt on the back of paper, How to clean the pressure roller
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I-5 Dirt on the back of paper HL-5030/5040/5050/5070N SERVICE MANUAL Possible cause Fixing unit dirty Dirt in the drum unit Step Check 1 Is the pressure roller dirty? Is any other area in the printer dirty? 2 Is the transfer roller dirty? Is the problem solved after replacing the drum unit? Result Yes Remedy Clean the pressure roller referring to the following procedure. Yes Replace the drum unit No Replace the high-voltage power supply PCB. NOTE: This problem may disappear after printing approximately 10 pages of completely blank sheets. How to clean the pressure roller Clean the pressure roller as follows; (1) Set three or more sheets of paper in the paper tray. (2) Open the front cover, and turn on the power switch while holding down the Go button. (3) Release the panel button when the Toner LED is on. (4) Close the front cover. (5) Hold down the panel button until the Drum LED is on, then release the button. Cross stripes are printed. (6) Print approximately 5 pages then press the Job Cancel button. (7) Make sure that the dirt on the back of paper has disappeared. 6-29