Brother MFC-J6520DW - Page 102

Confidential
2-68

Stained leading edge of recording paper
 Overlapping lines over the whole page
User Check
- Check whether the recording paper being used is within
the specification.
Step Cause Solution
1 Maintenance unit stained Clean the maintenance unit (refer to Fig. 2-10
(2-62).)
2 Paper feeding correction value
not updated
Adjust the paper feeding correction value (refer
to Chapter 5, Section 1.3.19 "Updating of Paper
Feeding Correction Values.")
3 Head defective Replace the head/carriage unit.
User Check
- Carry out head cleaning.
Step Cause Solution
1 Head inclination is not correctly
adjusted.
Adjust the head inclination (refer to Chapter 4,
Section 2.4 "Adjust head inclination.")
2 Head calibration uncompleted Write the head calibration data (refer to Chapter
5, Section 1.3.2 "Creating of Head Calibration
Data and Writing it into Flash ROM.")
3 Paper feeding correction value
not updated
Adjust the paper feeding correction value (refer
to Chapter 5, Section 1.3.19 "Updating of Paper
Feeding Correction Values.")
4 PF encoder disk stained Clean the PF encoder disk and flushing guide
(refer to Chapter 3, Section 1 "PRECAUTIONS
BEFORE PROCEEDING.")
5 PF encoder disk defective Replace the PF encoder disk.
6 Head defective Replace the head/carriage unit.
7 Main PCB defective Replace the main PCB ASSY.