Brother MFC-J3520 Service Manual page 99


Straight vertical stripes
Step
1 Foreign materials in the
carriage rail
2 Recording paper path
contaminated
3 CR encoder strip stained
4 Carriage flat cable not
mounted in place
5 Ink supply tubes not mounted
in place
6 CR encoder strip defective

White vertical streaks
Step
1 Foreign materials in the
carriage rail
2 CR encoder strip stained
3 Non-discharge of ink from
head
4 CR encoder strip defective
5 Carriage motor defective
Head defective
6
User Check
- Check whether the recording paper being used is within
the specification.
- Clean the related rollers by printing blank paper.
- Clean the platen.
Cause
Remove foreign materials.
Clean the recording paper path.
Clean the CR encoder strip.
Set the carriage flat cable into place.
Set the ink supply tubes guide into place.
Replace the CR encoder strip.
User Check
- Carry out head cleaning.
Cause
Remove foreign materials.
Clean the CR encoder strip.
Perform the recommended purge procedures.
(refer to the recommended procedures in
Chapter 5, Section 1.3.29 "Purge Operation
(Maintenance mode
Replace CR encoder strip.
Replace the carriage motor ASSY.
Replace the head/carriage unit.
2-65
Solution
Solution
76)".
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