Lexmark X940e Owners Manual

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This sensor detects by the actuator position whether media in the media tray assembly is lifted. When the flag of 
the actuator leaves the sensor (media level) sensing area, the sensor detects that the media has been lifted.
Main components 
Switch (tray module left door interlock) 
The switch (tray module left door interlock) detects open/close of the tray module left door assembly.
Sensor (tray 2 feed-out)
The sensor (tray 2 feed-out) detects media fed...

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The tray module transport roll assembly feeds media from the tray 3 or tray 4 to the printer.
Tray module drive motor 
This motor is used to drive the media transport mechanism in the tray module.
3TM controller card assembly
The 3TM controller card assembly, which contains a CPU, controls media feed in the tandem tray module upon 
receiving a command from the upper printer engine card assembly and sensor/switch information. 

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Switch (media size)
The following table gives on/off states of the switches on the switch (media size), corresponding to the media 
sizes of the media tray assembly.
Note:  The switches (media size) are denoted by “S/W1” and “S/W3” respectively from the left side.
Media SizeAnalog switch
S/W1 S/W3
No Tray Off Off
B5L/7.25” x 10.5”L Off On
8.5” x 11”L On Off
A4L On On 

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1TM theory  

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Media transport 
Media transport path
Media is supplied from tray 3 or tray 4, and is transported to the printer along the media transport path shown 
below.
Pick rollPick roll
Separation rollSeparation roll
Feed roll
Transfer belt 2nd transfer roll assembly
Heat roll
Pressure roll
Fuser unit ASM
Standard media
exit roll assembly
Duplex media transport roll ASM
Duplex mediaCenter transport
roll ASM
Tray 3Tray 4
Feed roll
Tray module media Transport roll...

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Media transport path
The following is a cross section of the printer and the 1TM, showing the main components directly associated 
with the media path and transport.
Functions of main components
When the 1TM is installed under the printer, additional trays are available.
Media tray assembly 
It is necessary to adjust the rear and the end guide in the media tray assembly to match the media size.
Rear media guide
The rear media guide can be adjusted to...

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The force pushing up the bottom plate is transmitted by the driving force of the motor on the media feed unit 
assembly. The bottom plate is pushed up by the rotation of the lift up shaft, which causes the supplied media to 
come in contact with the pick roll.
Tray 2 media tray assembly  
1TM media feed units
Media feed unit assembly
The media feed unit assembly is a mechanical unit supplying media from the media tray assembly to the printer. 
The...

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Switch (media size)
The switch (media size) switches the setting of the size of media supplied from each media tray assembly. A 
signal indicating the set size is transmitted as a voltage to the printer engine card assembly.
Sensor (media out)
If there is no media in the media tray assembly, the media out actuator lowers and the flag of the media out 
actuator that has stayed in the sensor (media out) sensing area leaves there. Thus, the light of the sensor...

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Sensor (tray 2 feed-out)
The sensor (tray 2 feed-out) detects media fed from the tray 2.
Tray module media transport roll assembly 
The tray module transport roll assembly feeds media from the tray 2.
Tray module drive motor 
This motor is used to drive the media transport mechanism in the tray module.
1TM controller card assembly
The 1TM controller card assembly, which contains a CPU, controls media feed in the 1TM upon receiving a 
command from the...

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Switch (media size)
The following table gives on/off states of the switches on the switch (media size), corresponding to the media 
sizes of the media tray assembly.
Note:  The switches (media size) are denoted by “S/W1” and “S/W3” respectively from the left side.
Media SizeAnalog switch
S/W1 S/W3
No Tray Off Off
B5L/7.25” x 10.5”L Off On
8.5” x 11”L On Off
A4L On On