HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
4-55
(I-22) Light rain
Possible cause
Step
Check
Result
Remedy
Ground
contact
Drum unit failure
1
Is the problem solved after
replacing the drum unit?
Yes
Replace the drum
unit.
Drum
connection
failure
2
Is the contact between the
drum unit and printer body
connected correctly?
No Clean
contact
electrode both on the
drum unit and in the
printer body.
High-voltage
power supply
PCB failure
3
Is the problem solved after
replacing the high-voltage
power supply PCB?
Yes
Replace the high-
voltage power supply
PCB.
(I-23) Ghost
Possible cause
Step
Check
Result
Remedy
Driver setting
1
Is thin paper such as 64g/m
2
used under the thick paper
mode?
Yes
1) Change the current mode to
the normal mode from the
driver setting.
2) Print 5 or 6 blank pages if
this problem occurs.
Drum unit failure
2
Is the problem solved after
replacing the drum unit?
Yes
Replace the drum unit.
High-voltage
power supply
PCB failure
3
Is the problem solved after
replacing the high-voltage
power supply PCB?
Yes
Replace the high-voltage power
supply PCB.
User Check
(1) Check the paper used meets the recommended paper specifications. Damp
paper, thick media or rough surfaced paper can cause the problem.
(2) Check the printer’s environment. High temperature and high humidity conditions
can cause the problem.
(3) Check that the appropriate media type is selected in the printer driver.
(4) Try installing a new drum unit.