HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
7-5
1.3 Service
Mode
Operation procedure of Service Mode is shown below. The function change depends on
number of times the
Go
button is pressed.
<HL-5240/5250DN>
1. Check that the front cover is open.
2. Turn ON the power switch while the
Go
button is held.
3. After all LEDs on the panel are lit, only the
Status
LED goes out.
4. Release
the
Go
button and check that all LEDs are out.
5. (1
st
step) Press the
Go
button once or twice. (If the
Go
button is pressed, the
Status
LED
is lit. If the
Go
button is released, the LED is out.)
6. Check
that
Toner
/
Drum
/
Paper
LEDs are lighted.
7. (2
nd
step) Press the
Go
button. Each mode starts after 2 seconds. (If the
Go
button is
pressed, the
Status
LED is lit. If the
Go
button is released, the LED is out.)
<HL-5270DN/5280DW>
1. Check that the front cover is open.
2. Turn ON the power switch while the
Go
button is held.
3. The
message
“
USERS MODE
” is shown on the LCD panel.
4. Release
the
Go
button and check that the
Data
LED is out.
5. (1
st
step) Press the
Go
button once or twice. (If the
Go
button is pressed, the
Data
LED is
lit. If the
Go
button is released, the LED is out.)
6. Check that the message “
USERS MODE
” is shown on the LCD panel with orange
backlight.
7. (2
nd
step) Press the
Go
button. Each mode starts after 2 seconds. (If the
Go
button is
pressed, the
Data
LED is lit. If the
Go
button is released, the LED is out.)