Brother HL-5590DN Service Manual

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Confidential
 Error code 6901
An error occurred in the fuser unit when the power switch was turned ON or sleep mode was
released.
Error code 6902
Rechecking the error after the power switch was turned OFF and then ON again because an
error was detected in the fuser unit.
(This message is displayed for approximately 15 minutes when the machine is restarted after
error code 6901 has occurred.)
 Error code 6A00
Detected discharge that may be attributable to dirty corona wire on the drum unit.
Step Cause Remedy
1
Connection failure of a fuser unit
harness
Reconnect the fuser unit harness.
2
Connection failure of the eject
sensor harness
Reconnect the eject sensor harness.
3 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
4 Fuser unit failure Replace the fuser unit.
5
Low-voltage power supply PCB
failure
Replace the low-voltage power supply PCB
ASSY.
6 Main PCB failure Replace the main PCB ASSY.
Note:
• Turn OFF the power switch. After the fuser unit has cooled sufficiently, turn ON the
power switch again and leave the machine for 15 minutes. This problem may then be
cleared.
• To release the fuser unit error after taking appropriate measures, enter the
maintenance mode once and quit it with the maintenance code 99.
<User Check>
• Slide the green tab of the drum unit to left and right for two to three times to clean the
corona wire.
• Clean the electrode of the drum unit.
• Replace the drum unit.
Step Cause Remedy
1
Dirt on the high-voltage power
supply PCB terminal
Clean the electrodes of the machine.
(Refer to Fig. 2-7.)
2
High-voltage power supply PCB
attachment failure
Check if each electrode comes back smoothly
after pressing it. If not, reattach each electrode.
3
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.

Brother HL-5590DN Specifications

General

Brand	Brother
Model	HL-5590DN
Category	Printer
Language	English