Brother MFC-J6920DW, Service Manual

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Confidential
2-63
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All single color
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Random color
User Check
- Check that ink cartridge is loaded correctly.
Step Cause Solution
1 Carriage PCB defective Replace the carriage PCB ASSY.
2 Head defective Replace the head/carriage unit.
3 Main PCB defective Replace the main PCB ASSY.
User Check
- Check that ink cartridge is loaded correctly.
- Carry out head cleaning.
Step Cause Solution
1 Maintenance unit stained Clean the maintenance unit (refer to Fig. 2-10
(2-62) .)
2 Wrong head property value
Input the head property value (refer to Chapter
5, Section 1.3.25 "Updating of Head Property
Data and Backup/Restoration of Head
Calibration Data."
)
3 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."
)
4 Non-discharge of ink from
head Perform the recommended purge procedures.
(refer to the recommended procedures in
Chapter 5, Section 1.3.29 "Purge Operation
(Maintenance mode 76)"
.
5 Carriage PCB defective Replace the carriage PCB ASSY.
6 Head defective Replace the head/carriage unit.
7 Main PCB defective Replace the main PCB ASSY.