5-16
Confidential
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.
(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.
Note:
• Press the [SET] key to stop the buzzing sound from the speaker.
LCD Sensor name
Detection status
With display No display
TN Toner amount detection sensor Beam obstructed Beam not obstructed
NT New toner sensor Sensor not pressed Sensor pressed
ST Output tray stack sensor
Ejected paper not yet full
Ejected paper full
C2 T2LT Paper feed sensor Paper tray 2 closed Paper tray 2 open
P2 T2LT paper empty sensor No paper Paper set
TT TT connection sensor TT connected TT not connected
C1 T1 paper feed sensor Paper tray 1 closed Paper tray 1 open
P1 T1 paper empty sensor No paper Paper set
MP MP paper empty sensor No paper Paper set
CV Front cover sensor Front cover closed Front cover open
RC Back cover/duplex tray sensor Back cover closed Back cover open
PO Eject sensor No paper Paper set
RM Registration front sensor No paper Paper set
RA Registration rear sensor No paper Paper set
MACxx Internal temperature sensor
XX
ï‚°C
NG
OTxx External temperature sensor
XX
ï‚°C
NG
OHxx External humidity sensor XX% NG
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