Brother MFC-J3520 Service Manual page 100

Ink splash

Step
1 Maintenance unit stained
2 Wrong head property value
3 Carriage PCB defective
4 Maintenance unit defective
5 Head defective
6 Main PCB defective
Print edges not aligned

Step
1 Vertical print lines not aligned
2 Head inclination is not correctly
adjusted.
3 CR encoder strip stained
4 CR encoder strip defective
5 Head defective
6 Main PCB defective
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
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the head/carriage unit.
Replace the main PCB ASSY.
User Check
- Check whether the recording paper being used is within
the specification.
- Perform the printing position adjustment.
- Set the improvement of the ruled line offset of Selector Nos. 1
to 3 of AMS07 (refer to
Setting.")
Cause
Adjust vertical print line alignment (refer to
Chapter 5, Section 1.3.23 "Adjustment of
Vertical Print Lines/Software Correction for
Inclination/Corrugation/Ruled
Adjust the head inclination (refer to
Section 2.4 "Adjust head
Clean the CR encoder strip.
Replace CR encoder strip
Replace the head/carriage unit.
Replace the main PCB ASSY.
2-66
User Check
- Replace the ink cartridge.
Solution
Data.")
1.3.35 "Assurance Mode Switch
Solution
Fig. 2-10
Chapter
Lines.")
Chapter 4,
inclination.")
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