Brother DCPJ525W Service Manual page 112

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Step
1 Maintenance unit contaminated
2 Head property data incorrect
3 Head calibration data not written
4 Carriage PCB defective
5 Maintenance unit defective
6 Print head defective
7 Power supply PCB defective
8 Main PCB defective
Straight vertical stripes
Step
1 Recording paper path
contaminated
2 Carriage rail dented
User Check
- Check whether the paper type setting is correct.
- Perform head cleaning.
Cause
User Check
- Check whether the recording paper being used is thicker than the specified
limit.
- Perform head cleaning.
- Print on several sheets of blank paper to clean the related rollers.
- Clean the platen.
Cause
2-67
Solution
Clean the maintenance unit. Refer to
Section 4.2.6.
Enter the correct head property data. Refer to
Chapter 5, Section 1.4.23.
Perform head calibration with Function code 02.
Refer to Chapter 5, Section
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the head/carriage unit.
Replace the power supply PCB ASSY.
Replace the main PCB ASSY.
Solution
Clean the recording paper path.
Replace the engine unit.
Chapter 2,
1.4.2.
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