Brother HL-5280DW Service Manual

HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
4-37
(13) LED failure
Possible cause Step Check Result Remedy
Three LEDs light
up after turning
the power ON.
A1 Is the printer in the service
mode?
Yes
Check that the Go button has
been pressed or not.
Panel PCB
failure
A2 Does any LED light up when
pressing the Go button?
No
Replace the panel PCB.
Disconnection of
the panel PCB
harness
B1 Is the harness connected
securely?
No
Reconnect the harness
securely.
Regist front
sensor failure
B2 Does the regist front sensor
work correctly?
No
Replace the regist front
sensor.
Regist rear
sensor failure
B3 Does the regist rear sensor
work correctly?
No
Replace the regist rear sensor.
Paper eject
sensor failure
B4 Does the paper eject sensor
work correctly?
No
Replace the paper eject
sensor.
Main cover
switch
malfunction
B5 Is the main cover switch closed
securely?
Yes Check the switch.
(14) Service error indication when turning the power ON
Possible cause Step Check Result Remedy
Disconnection of
the main motor
harness
1 Is the harness of the main
motor connected?
No
Reconnect the harness
securely.
Disconnection of
the scanner
motor harness
2 Is the harness of the scanner
motor connected?
No
Reconnect the harness
securely.
Fuser unit failure 3 Does the printer resume after
opening the cover, turning the
power ON and leaving the
printer for ten minutes?
No
Replace the fuser unit.
(15) The printer stops while idling
Possible cause Step Check Result Remedy
Front cover
failure
1 Is the cover opened by
vibration during idling?
Yes Replace the front cover.
New toner
detection switch
failure
2 Does the new toner detection
switch work correctly?
No
Replace the new toner
detection switch.
Process unit
terminal failure
3 Are the terminals of the
process unit dirty?
Yes Clean the terminals.
Laser unit failure 4 Does the laser unit work
correctly?
No
Replace the laser unit.

Brother HL-5280DW Specifications

General

Brand	Brother
Model	HL-5280DW
Category	Printer
Language	English