Brother International DCP 8080DN Service Manual - Page 145
DOCUMENT FEEDING PROBLEMS, 11.1 No Feeding, No Feeding
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11. DOCUMENT FEEDING PROBLEMS Problems related to paper feeding are end user recoverable if following the User Check items. If the same problem occurs again, follow each procedure in the order of the number described in the Step column in the tables below. 11.1 No Feeding - Check if the document is inserted correctly to the depths. - Check whether the document is 50 or less sheets. - Check if the ADF cover is closed. Step 1 2 3 4 5 6 7 8 9 10 Cause Check Result Remedy Document front actuator 1 catching on some position Does the document front actuator 1 move smoothly? Re-assembly the No document front actuator 1. Document front Is the harness of the sensor 1 harness document front sensor 1 connection failure connected securely? Reconnected the harness No of the document front sensor 1. ADF motor Is the harness of the ADF harness motor connected connection failure securely? Reconnected the harness No of the ADF motor. PF solenoid failure Does the PF solenoid move smoothly? Is it damaged? Replace the PF solenoid. No Document front sensor 1 malfunction Does the document front Replace the document sensor 1 move smoothly? front sensor 1. (Check it following the No procedure described in "Maintenance mode 32") Feed roller holder Though the ADF motor ASSY failure rotates, does the supply roller rotate? Replace the feed roller Yes holder ASSY. ADF relay PCB failure Is the problem solved after replacing the ADF relay PCB? Replace the ADF relay Yes PCB. Driver PCB failure Is the problem solved after replacing the driver PCB? Replace the driver PCB. Yes ADF motor failure Is the problem solved after replacing the ADF motor? Replace the ADF motor. Yes Main PCB failure Is the problem solved after replacing the main PCB? Replace the main PCB. Yes 3-73 Confidential