Brother International HL 5030 Service Manual - Page 219
Gray background, Toner sensor failure.
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I-18 Gray background HL-5030/5040/5050/5070N SERVICE MANUAL Possible cause Step Check Result Remedy Print paper 1 Does the paper being used meet the paper specification (weight, etc.). No Recommend to use the specified types of paper. Yes Recommend to change to freshly unpacked paper. Toner sensing failure (printer side) 2 Is the Status LED green even after removing the drum unit and toner cartridge? (Be sure to close the cover after removing the drum unit and toner cartridge.) Yes Toner sensor failure. Clean the toner sensor and check the toner sensor connection. Toner cartridge failure 3 Is the problem solved after replacing the toner cartridge? Yes Replace the toner cartridge. Drum unit failure 4 Is the problem solved after replacing the drum unit? Yes Replace the drum unit. No Replace the high-voltage power supply PCB. NOTE: The following cases increase the possibility of this problem. • Acid paper is being used. • The drum unit is at the end of its life. • There is dust or paper powder. 6-39