Brother personal Fax 190 black lines

[Stratford]

this is a small thermo fax machine, was working fine,customer complain a black line on the copies or on the send faxes. I just cleaned the document scanner glass,then the test copy is all the black vertical lines on both verticall eadge of the copies. I have no idea what is this caused???

thanks for your time to help

[KJ1110]

Most likely a bad Contact Image Sensor (CIS)!

[raym]

i agree with KJ1110.

[raym]

i agree with KJ1110.