Brother HL-J6000DW Service Manual page 112

■ Random missing dots, fainted and patchy
Step
1 Maintenance unit stained
2 Non-discharge of ink from
head
3 Carriage PCB defective
4 Maintenance unit defective
5 Head defective
6 Main PCB defective
■ White horizontal streaks
Step
1 Paper feeding correction not
updated
2 Head inclination is not correctly
adjusted.
3 PF encoder disk stained
4 Non-discharge of ink from
head
5 PF encoder disk defective
6 Carriage PCB defective
7 Maintenance unit defective
8 Head defective
9 Main PCB defective
< User Check >
- Carry out head cleaning.
- nk cartridge.
Replace the i
- Refill ink.
Cause
Clean the maintenance unit.
(refer to
Perform the recommended purge procedures.
(refer to the recommended procedures in
Chapter 5, Section 1.3.28 "Purge Operation
(Maintenance mode
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the head/carriage unit.
Replace the main PCB.
< User Check >
- Carry out head cleaning.
- nk cartridge.
Replace the i
- Refill ink.
Cause
Update paper feed correction.
(refer to
Paper Feeding Correction Values (Maintenance
mode
Adjust the head inclination.
(refer to
inclination")
Clean the PF encoder disk and flushing guide.
(refer to
Disassembly/Assembly")
Perform the recommended purge procedures.
(refer to the recommended procedures in
Chapter 5, Section 1.3.28 "Purge Operation
(Maintenance mode
Replace the PF encoder disk.
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the head/carriage unit.
Replace the main PCB.
2-72
Solution
Fig. 2-11 (2-68))
76)".
Solution
Chapter 5, Section 1.3.18 "Updating of
58)")
Chapter 4, Section 2.4 "Adjust head
"Precautions for Troubleshooting and/or
76)".
Confidential