Brother HL-4000CN Service Manual page 256

Menu
No.
TRAY2 NO PAPER SENSOR
DI-12
TRAY3 NO PAPER SENSOR
DI-13
TRAY1 LOW PAPER SENSOR
DI-15
TRAY2 LOW PAPER SENSOR
DI-16
TRAY3 LOW PAPER SENSOR
DI-17
TRAY1 SIZE SWITCH ASSY
DI-18
TRAY2 SIZE SWITCH ASSY
DI-20
TRAY3 SIZE SWITCH ASSY
DI-28
FUSER FAN ALARM
DI-30
REAR FAN ALARM
DI-31
NO PRINT HEAD CARTRIDGE
DI-32
ASSY
WASTE TONER SENSOR
DI-33
NO Tray Module
DI-34
4.8.2 Digital output test
Function: Activating a solenoid, clutch, motor, or other parts.
Capable of activating two or more parts simultaneously. (Parallel execution)
Operation procedure:
1. Enter the Diag. (C/E) mode.
2. Select [CE Maintenance IOT Diag] with the
3. Press the Form Feed/Set button to advance to diagnostic menu selection in [CE
Maintenance IOT Diag].
4. Select [IOT Diag Digital Output] with the
5. Press the Form Feed/Set button to advance to diagnostic menu selection in [IOT
Diag Digital Output].
6. Select the menu No. of a digital output test with the
7. (For the contents of the diagnostic items, refer to the table below.)
8. Press the Form Feed/Set button to execute the diagnosis.
9. The part is activated and the LCD panel displays [EXEC].
(The display is [READY] when the part is not in operation.)
10. Press the Job Cancel/Back button to terminate the diagnosis.
11. Press the Menu button to terminate all parts in operation and return to the
[IOT Diag Digital Output] display.
Part/signal name
V-46
Test method
Block and unblock the sensor
with an actuator.
Block and unblock the sensor
with an actuator.
Increase and decrease paper on
Tray1 for sensor detection and
no detection.
Increase and decrease paper on
Tray2 for sensor detection and
no detection.
Increase and decrease paper on
Tray3 for sensor detection and
no detection.
Hold and release fuser fan.
Hold and release rear fan.
Mount and remove print head
cartridge ASSY.
Block and unblock the sensor
with paper.
Connect and disconnect the tray
module.
and buttons.
and buttons.
and
Reference
BSD
2.6.2
2.6.3
2.6.1
2.6.2
2.6.3
2.6.1
2.6.2
2.6.3
2.9.3
2.9.3
2.3.2
2.8.6
2.7
buttons.