Brother MFC-8510DN - Manual (Page 115)

Troubleshooting
103
B
f
Pull the duplex tray completely out of the
machine.
g
Pull the jammed paper out of the
machine or out of the duplex tray.
h
Make sure that the jammed paper does
not remain under the machine from
static electricity.
i
Put the duplex tray back into the
machine.
j
Put the paper tray firmly back in the
machine.