Brother MFC-J3520 Service Manual page 98


Light
Step
1 Maintenance unit stained
2 Wrong head property value
3 Head calibration uncompleted
4
Non-discharge of ink from
head
5 Carriage PCB defective
6 Maintenance unit defective
7 Head defective
8 Main PCB defective

Dark
Step
1 Maintenance unit stained
2 Wrong head property value
3 Head calibration uncompleted
4 Carriage PCB defective
5 Maintenance unit defective
6 Head defective
7 Main PCB defective
User Check
- Check whether the recording paper being used is within
the specification.
- Check whether the paper type setting is correct.
- Carry out head cleaning.
- Replace the ink cartridge.
Cause
Clean the maintenance unit (refer to
(2-62).)
Input the head property value (refer to
5, Section 1.3.25 "Updating of Head Property
Data and Backup/Restoration of Head
Calibration
Write the head calibration data (refer to
5, Section 1.3.2 "Creating of Head Calibration
Data and Writing it into Flash
Perform the recommended purge procedures.
(refer to the recommended procedures in
Chapter 5, Section 1.3.29 "Purge Operation
(Maintenance mode
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the head/carriage unit.
Replace the main PCB ASSY.
User Check
- Check whether the paper type setting is correct.
Cause
Clean the maintenance unit (refer to
(2-62).)
Input the head property value (refer to
5, Section 1.3.25 "Updating of Head Property
Data and Backup/Restoration of Head
Calibration
Write the head calibration data (refer to
5, Section 1.3.2 "Creating of Head Calibration
Data and Writing it into Flash
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the head/carriage unit.
Replace the main PCB ASSY.
2-64
Solution
Data.")
ROM.")
76)".
Solution
Data.")
ROM.")
Fig. 2-10
Chapter
Chapter
Fig. 2-10
Chapter
Chapter
Confidential