Brother MFC-J3520 Service Manual page 103


Separated lines over the whole page
Step
1 Head inclination is not correctly
adjusted.
2 Head calibration uncompleted
3 Paper feeding correction value
not updated
4 PF encoder disk stained
5 Non-discharge of ink from
head
6 PF encoder disk defective
7 Head defective
8 Main PCB defective

Overlapping lines at the trailing edge of the recording paper
Step
1 Paper feeding correction value
not updated
2 PF encoder disk stained
3 PF encoder disk defective
4 Main PCB defective
User Check
- Carry out head cleaning.
Cause
Adjust the head inclination (refer to
Section 2.4 "Adjust head
Write the head calibration data (refer to
5, Section 1.3.2 "Creating of Head Calibration
Data and Writing it into Flash
Adjust the paper feeding correction value (refer
to
Feeding Correction
Clean the PF encoder disk and flushing guide
(refer to
BEFORE
Perform the recommended purge procedures.
(refer to the recommended procedures in
Chapter 5, Section 1.3.29 "Purge Operation
(Maintenance mode
Replace the PF encoder disk.
Replace the head/carriage unit.
Replace the main PCB ASSY.
User Check
- Carry out head cleaning.
Cause
Adjust the paper feeding correction value (refer
to
Feeding Correction
Clean the PF encoder disk and flushing guide
(refer to
BEFORE
Replace the PF encoder disk.
Replace the main PCB ASSY.
2-69
Solution
Chapter 5, Section 1.3.19 "Updating of Paper
Values.")
Chapter 3, Section 1 "PRECAUTIONS
PROCEEDING")
76)".
Solution
Chapter 5, Section 1.3.19 "Updating of Paper
Values.")
Chapter 3, Section 1 "PRECAUTIONS
PROCEEDING")
Chapter 4,
inclination.")
Chapter
ROM.")
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