Brother HL-5590DN Service Manual

2-100
Confidential
 Faulty registration
 Dark
<User Check>
- Check that the appropriate paper type is selected in the
driver.
- Install the latest main firmware.
Step Cause Remedy
1
Wrong adjusted value of laser unit
entered
Refer to “3.1 Entering Adjusted Value of
Laser Unit” in Chapter 4, and enter the
adjusted value of the laser unit correctly.
2
Wrong adjusted value of TT entered
Refer to “7.2 Adjusting Left-end and Upper-
end Print Position (Function Code: 45) (TT
only)” in Chapter 4 to adjust the writing
start position.
3
Registration rear actuator coming
off
Reattach the registration rear actuator.
4 Distortion at TT assembly Reattach the TT.
5 Laser unit failure Replace the laser unit.
6 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
- If a new toner cartridge has been detected, check that it was not
replaced with another toner cartridge.
- Clean the corona wire of the drum unit.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and those of the machine
Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-6 and
Fig. 2-7.)
2
Dirt on the electrodes of the toner
cartridge and those of the machine
Clean the electrodes of the toner cartridge
and those of the machine. (Refer to Fig. 2-6
and Fig. 2-7.)
3
Dirt on the electrodes of the
machine
Clean the electrodes of the machine.
(Refer to Fig. 2-7.)
4
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
5 Main PCB failure Replace the main PCB ASSY.
6 Laser unit failure Replace the laser unit.

Brother HL-5590DN Specifications

General

Brand	Brother
Model	HL-5590DN
Category	Printer
Language	English