Lexmark X940e Owners Manual

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Pressure belt 
The pressure belt is used to apply pressure to the media surface for fusing. Pressure is applied to the media 
between the pressure belt and heat roll, pressing the melted toner against the media.
Heater lamp 
The heater lamp is a quartz glass tube containing a heater coil. A terminal is mounted to the end of the heater 
rod via a harness. Two heater lamps are used: the main heater lamp to heat the entire heat roll, and the sub 
heater...

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Standard media exit roll assembly 
The media exit roll assembly feeds printed media from the fuser to the standard bin.
Sensor (standard bin full)
The sensor (standard bin full) detects whether the standard bin is full by moving the actuator up and down.
Standard media exit shift motor
The standard media exit shift motor allows the standard media exit roll assembly to shift back and forth to perform 
off-set sorting.
Duplex diverter gate
The duplex diverter...

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The MPF/transport drive motor is a stepper motor that drives the MPF unit assembly and media transport roll.
CMYK PC cartridge drive motor assembly
The CMYK PC cartridge drive motor assembly uses dual DC brushless motors that drive the four drums in the 
four PC cartridges. 
K developer/transport
drive motor assembly
MPF/transport
drive motor
K drive motor
CMY drive motor 

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CMY developer drive motor assembly
The CMY developer drive motor assembly uses a DC brushless motor to drive the three color developer unit 
assemblies.
K developer clutch
This clutch is used to engage the K developer unit assembly and is driven by the K-developer transfer drive 
motor assembly.
CMYK toner add motor assembly
K developer
clutch
CMY developer drive
motor assembly
Y toner add motor
Y toner add assembly M toner add motor
M toner add assembly C...

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The CMYK toner add motor assembly consists of 4 separate DC motors. Each color of toner has its own motor 
that is used to rotate the toner auger inside the toner cartridge and drive the auger inside the toner add 
assembly. 
Waste toner agitator motor assembly
The waste toner agitator motor assembly is used to rotate an auger inside the waste toner cartridge in order to 
distribute collected waste toner evenly to prevent spillage and overflow....

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5V LVPS card assembly
The LVPS card assembly generates low voltages 5V for logic circuits, 5 V for laser diodes from AC power. 
24V LVPS card assembly
The LVPS card assembly generates 24 V for motors/clutches from AC power. 
CMYK transfer roll HVPS card assembly
The CMYK transfer roll HVPS card assembly generates AC power and feeds it to the CMYK transfer rolls inside 
the transfer belt unit assembly.
Developer roll HVPS card assembly
The HVPS card assembly...

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Upper printer engine card assembly
The upper printer engine card assembly controls printing operation based on the communication with the RIP 
card assembly and optional peripherals. It also controls toner dispense, erase lamps and fuser control.
Lower printer engine card assembly
The lower printer engine card assembly controls printing operation based on the communication with the RIP 
card assembly and on sensor/switch information. It also controls...

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Control 
Media size control
Media tray assembly feeding
The following table gives the states (on/off) of the switches on the switch (media size), corresponding to the 
media sizes of the media tray assembly.
Note:  The switches on the switch (media size) are denoted by “S/W2”, “S/W4”, “S/W3”, “S/W5”, and “S/W1” 
respectively from the left side. 
Printhead control
Rotation of printhead motor
The on/off control of the printhead motor is performed according to...

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Determination of printhead ready
The printhead goes into ready state after the specified period passes since the reception of the printhead MPA 
start signal and the SOS cycle exceeds the reference value. 
Printhead reference value 
Fuser control
Fuser control method
The on/off control of the main/sub heater lamps is performed based on the fuser control temperature. The fuser 
transmits between the five states (warm up, ready, standby, print, and low...

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Xerographic process during a print cycle
K
C
M
Y
K toner
C toner M toner
Y toner
2nd transfer
roll assembly
Printhead
Transfer belt
Fuser
Cleaning rollTransfer belt
cleaning
assembly
Cleaning blade
Photo conductor drum
Charge roll
Sensor (ATC) Erase Lamp
Developer
unit K transfer roll
C transfer roll
M transfer roll
Y transfer roll
Registration roll