Check Sensor Operation (Function Code: 32) - Brother HL-5440D Service Manual

1.3.8 Check sensor operation (function code: 32)

<Function>
This function is to check that the sensors are operating normally.
<Operation Procedure>
(1) Press the [
"Maintenance 32" on the LCD.
(2) Press the [OK] button. The sensor operating conditions defined in the table below are
applied. For example, when paper tray 2 is set, "C1C2T2TNNT**" (1st group) is
displayed on the LCD. When paper tray 2 is not set, "C1****TNNT**" is displayed.
(3) Pressing the [Go] button displays the next group.
The table below summarizes the displays on the LCD, sensor names and detection status.
Group 1
Group 2
(4) Change the conditions subject to sensor detection and check that the display on the LCD
changes depending on the sensor status. For example, feed the paper through the
registration front or rear sensor, open the front cover or back cover, remove the toner
cartridge, create paper jam at the exit, supply paper from the MP tray, or set the paper tray.
(5) Operate the sensor from OFF to ON as below to check the operation of the corresponding
solenoid or clutch.
Change T1 paper feed sensor from OFF to
ON.
Change MP paper empty sensor from OFF
to ON.
Change registration front sensor from OFF
to ON.
Change registration rear sensor from OFF to
ON.
Change new toner sensor from OFF to ON. The develop clutch 51R remains ON for the
(6) When the [Cancel] button is pressed, this operation is finished, and the machine returns
to the initial state of maintenance mode.
] or [ ] button in the initial state of maintenance mode to display
LCD Sensor names
C1 T1 paper feed sensor
C2 T2 paper feed sensor
T2 T2 connect sensor
TN Toner sensor
NT New toner sensor
CV Front cover sensor
RC Back cover sensor
PO Eject sensor
RM Registration front sensor No paper / Paper set
RA Registration rear sensor No paper / Paper set
MP MP paper empty sensor No paper / Paper set
Sensor operation
(displayed / not displayed)
Paper tray 1 closed / Paper tray 1 open
Paper tray 2 closed / Paper tray 2 open
Paper tray 2 connected /
Paper tray 2 not connected
Beam obstructed / Beam not obstructed
Sensor pressed / Sensor not pressed
Front cover closed / Front cover open
Back cover closed / Back cover open
No paper / Paper set
Solenoid/clutch operation
The T1 clutch remains ON for the specified
time.
The MP solenoid remains ON for the
specified time.
The duplex solenoid remains ON for the
specified time.
The registration clutch remains ON for the
specified time.
specified time.
5-14
Detection status
Confidential