Brother HL-600 Service Manual page 59

I-9 White vertical streaks
Possible cause Step
Scanner soiling 1 Is the window of scanner soiled?
I-10 Faulty registration
Possible cause Step
Excessive 1 Is the amount of paper more than 22mm
paper load thick (in thickness) loaded to the paper
tray?
Print paper 2 Is the specified weight of the recommended
paper being used?
3 Is the first printing position within ±1mm
of the tolerance specification?
Top of form 4 Is the position of the top of form sensor normal?
sensor position
failure
Check
Check
IV - 9
Result Remedy
Yes Clean the window with a
dry tissue.
No Replace the tdrum unit
as the transfer roller may be
scratched.
Result Remedy
Yes Instruct the user to keep
paper loads below 22 mm in
thickness.
No Instruct the user to use the
recommended types of paper.
Yes Adjust the Y offset by using
the utility software supplied.
No Reposition the sensor to the
normal position.