Brother HL-S7000DN Series, Service Manual

Page: 161 / 460

2-133
Confidential
■ Blurred text
■
Dirt on paper edge (when printed papers are overlapped, number of lines can be
seen on the end face.)
■
Dirt on the paper edge during 2-sided printing (Ink dirt occurred on the front
edge, rear end, or corner.)
<User Check>
- Perform head cleaning.
- Check if paper is not damp.
- Lower the printing density.
Step Cause Remedy
1 Loose installation of ink head Reinstall the ink head.
2 Ink head failure Replace the ink head.
3 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Perform blank-sheet printing several times. (Dirt might get thinner)
Step Cause Remedy
1 Dirt on Star Wheel roller of the
paper eject Clean the Star Wheel roller.
2 Terrible dirt on Star Wheel
roller of the paper eject Replace the paper eject ASSY.
<User Check>
- Check whether paper is curled.
- Lower the printing density.
- If short grain paper is used, change it to the long grain paper.