HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
7-7
< Functions of each “Service Mode” >
(1)
Factory Inspection Mode
This mode is to check each sensor at the assembly line.
< Sensor Inspection Check Procedure >
(1)
Print “Print Settings” by clicking the
Go
button three times. If a failure such as paper
jams occurs, activate each sensor manually when the machine goes into the
inspection mode.
(2)
Procedures to go into the factory inspection mode are as follows.
< 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. Press
the
Go
button once. (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. Press
the
Go
button once. 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. Press the
Go
button once. (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. Press the
Go
button once. 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.)
