Troubleshooting By Print-Image Defect - Brother MFC Series Service Manual

4.3.2

Troubleshooting by print-image defect

Problems related to image defects can also be resolved by the end users by following the
User Check items.
If the same problem occurs, follow each procedure in the order of the number described in
the Step column in the tables below.
■ Completely blank
Step
1
Maintenance unit stained
2
The head property value is
incorrect
3
Head flat cable connection
failure
4
Carriage flat cable connection
failure
5
Non-discharge of ink from
head
6
Ink supply tubes bent
7
Carriage PCB defective
8
Maintenance unit defective
9
Head defective
10
Main PCB defective
<User Check>
- Check if there is an ample amount ink volume.
- Carry out head cleaning.
- Replace it with a new Ink cartridge.
- Refill Ink.
Cause
Cleaner stick
(Front)
2-52
Solution
Clean the Maintenance unit.
(Refer to the diagram below)
Enter the Head property value.
(Refer to Chapter 5, Section
Reconnect the Head flat cable.
Reconnect the Carriage flat cable.
Carry out the recommended purge procedures.
Refer to "Recommended purge procedures" in
"Chapter 5, Section 1.4.26 "Purge Operation
(Maintenance mode 76)"
Replace the Ink refill unit.
Replace the Carriage PCB ASSY.
Replace the Maintenance unit.
Replace the Head/carriage unit.
Replace the Main PCB ASSY.
Maintenance unit
1.4.22)
(cleaning_L)
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