Brother International MFC-P2000 Service Manual - Page 89
Downward fogging of solid black, Horizontal lines, Check the SR
UPC - 012502525394
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I-19 Downward fogging of solid black Possible cause Drum unit High-voltage power supply PCB Step 1 2 Check Is the problem solved after replacing the drum unit? Is the problem solved after replacing the high-voltage power supply PCB? Result Remedy Yes Replace the drum unit. Yes Replace the high-voltage power supply PCB. I-20 Horizontal lines Possible cause SR electrode SR connection failure Feed roller Step Check 1 Are the SR electrodes between the printer body and the drum unit dirty? 2 Are the SR electrodes between the printer body and the drum unit connected correctly? 3 Are the feed roller shaft and the ground contact connected correctly? Result Yes Remedy Clean both electrodes. GND contacts (Fig.4-5, 4-7) ➈ No Check the SR connection. No Check the connection ➉ between the shaft and the ground contact. IV-20