SOURCE: Black line down center of paper while using manual feed
I had this issue once before on a Canon Multifunction printer and when I talked with Canon they said it was a malfunctioning scanning bed. They sent out a new one and I replaced it and had no further problems.
CClean The MX882 ADF (Automatic Document Feeder)
Be sure to turn off the power and unplug the power cord before cleaning the machine.
The power cannot be turned off while the machine is sending or receiving a fax, or when the received fax or unsent fax are stored in the machine's memory. Make sure if the machine completed sending or receiving all the faxes before disconnecting the power cord.
The machine cannot send or receive faxes when the power is turned off.
If you unplug the power cord, all the faxes stored in the machine's memory will be deleted.
Print the necessary faxes or save them to the memory card/USB flash drive before unplugging the power cord.
Open the Document Tray.
Open the Document Feeder Cover.
With a soft, clean, lint-free and dry cloth, wipe off any paper dust from the inside of the Document Feeder Cover (A).
After wiping, close the Document Feeder Cover by pushing it until it clicks into place.
Close the Document Tray. speed printer service
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I have the exact same problem. Tried cleaning the head, but the black lines are still there.
cleaning the print head doesnt help. its doing it when it faxes and copies. not when it prints
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