Check Sensor Operation (Function Code: 32) - Brother DCP-L5500D Service Manual

1.3.10Check sensor operation (function code: 32)

<Function>
This function is used to check whether the sensors, solenoids, and clutches are operating normally.
<Operating Procedure>
(1) Press the [3], and then the [2] key in the initial state of maintenance mode. Either of the
following examples is displayed on the LCD
e.g. TNNTSTC2P2**TT**
e.g. TNNTST----MCTT
The machine or speaker makes buzzing sound continuously.
Information related to the LT and TT are not displayed on the LCD when those are not
connected.
Note:
• Press the [SET] key to stop the buzzing sound from the speaker.
(2) Pressing the [Mono Start] key changes the display to the next item.
(3) Change the conditions subject to sensor detection shown below and check that the
display on the LCD changes depending on the sensor status. For example, feed the
paper through the registration front/rear sensor, open the front cover or back cover,
remove the toner cartridge, or create paper jam at the exit.
(4) When you press the [X] key, this operation is finished and the machine returns to the
initial state of maintenance mode.
<Sensor check>
The table below summarizes the displays on the LCD, sensor names and detection status.
LCD
TN Toner amount detection sensor
NT New toner sensor
ST Output tray stack sensor
C2 T2LT Paper feed sensor
P2 T2LT paper empty sensor
TT TT connection sensor
C1 T1 paper feed sensor
P1 T1 paper empty sensor
MP MP paper empty sensor
CV Front cover sensor
RC Back cover/duplex tray sensor
PO Eject sensor
RM Registration front sensor
RA Registration rear sensor
MACxx Internal temperature sensor
OTxx External temperature sensor
OHxx External humidity sensor
Sensor name
5-16
Detection status
With display
Beam obstructed
Sensor not pressed
Ejected paper not yet full Ejected paper full
Paper tray 2 closed
No paper
TT connected
Paper tray 1 closed
No paper
No paper
Front cover closed
Back cover closed
No paper
No paper
No paper

XX
C

XX C
XX%
No display
Beam not obstructed
Sensor pressed
Paper tray 2 open
Paper set
TT not connected
Paper tray 1 open
Paper set
Paper set
Front cover open
Back cover open
Paper set
Paper set
Paper set
NG
NG
NG
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