Brother International HL 5030 Service Manual - Page 220
Hollow print, Downward fogging of solid black, Is the problem solved after
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CHAPTER 6 TROUBLESHOOTING I-19 Hollow print User Check (1) Check the paper used meets the recommended paper specifications. (2) Select the 'Thick paper mode' in the printer driver, or use thinner paper than you are currently using. (3) Check the printer's environment, conditions such as high humidity may cause this situation to occur. Possible cause Print paper Step Check 1 Is thick paper of more than 43lb being used or extremely rough surface paper? Result Remedy Yes Recommend to use the specified types of paper. No Refer and compare with I-15. I-20 Downward fogging of solid black Possible cause Toner cartridge failure High-voltage power supply PCB failure Step Check 1 Is the problem solved after replacing the toner cartridge? 2 Is the problem solved after replacing the high-voltage power supply PCB? Result Remedy Yes Replace the toner cartridge. Yes Replace the high-voltage power supply PCB. 6-40