Lexmark X940e Owners Manual

Conventionsxxxi
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Navigation buttons
This manual contains navigation buttons in the right margin of each page, making it easier and quicker to 
navigate. 
Conventions
Note:  A note provides additional information.
Warning:  A warning identifies something that might damage the product hardware or software.
There are several types of caution statements:Button Description
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xxxiiService Manual 7510
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General information1-1
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1.  General information
The Lexmark™ X940e and X945e are color laser MFPs that provide print, copy, scan, and fax functions. All 
information in this service manual pertains to both models unless explicitly noted.
Printer technology
•Color laser
Processor
•1.25 GHz
Memory
•Standard: 512 MB
•Maximum: 1024 MB
•Hard Drive: 80 GB
Acoustics
All measurements were made in accordance with ISO 7779 and reported in conformance with ISO 9296.
Environment...

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Number of light sources 1
Color bit depth
Maximum optical resolution24
600 x 600
Scan area - flatbed 297 x 432 mm
Scanner ADF
Type
Optical resolution ADF (mono)C-path (duplexing)
Maximum 600 x 600 dpi
Optical resolution ADF (color) Maximum 600 x 300 dpi
Document capacity 75 sheets (80 g/m
2) bond
Media weight
Media weightMaximum 32 lb (128g/m2)
Minimum 16 lb (38 g/m2) (50 g/m2 for duplex mode)
Speed - maximum
(Letter/A4 long-edge fed)Mono: up to 45 SPM
Color:...

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Printer overview
CAUTION: Do not set up this product or make any electrical or cabling connections, such as the 
power cord or options and features, during a lightning storm. 
Basic model 
The following illustration shows a printer with its base features.
Duplex unit
Multipurpose
feeder
(MPF)
Tray 1 and tray 2
(500 sheet trays)Tray 3 and tray 4
850+1150 sheet dual
input tray (TTM) Operator
panel
ADF 

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Configured model 
The following illustration shows a fully configured printer. Items denoted with an asterisk (*) are options. 
Finisher* Bridge unit*
(Used in conjunction
with finisher)
Duplex unit
Multipurpose
feeder
(MPF)
Tray 1 and tray 2
(500 sheet trays)Tray 3 and tray 4
850+1150 sheet dual
input tray (TTM) Operator
panel
ADF 

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Printer theory
Media transport
Media transport path
Media is supplied from the MPF, tray 1, 2, 3 or 4, and is transported to the printer along the media transport path 
shown below. 
MPF
MPFpickroll
MPF Transport Roll ASM
MPF ASMMedia feed
unit ASMMedia feed
unit ASM
Pick rollPick roll
Separation rollSeparation roll
Feed roll
Media transport roll ASM Tray 1
Tray 2
Feed roll
Registration roll ASM
2nd Transfer roll ASM
Transfer belt
Heat roll
Pressure belt...

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MFP paper path rolls
Tr a y  2
1TM (optional)
Media transport roll assembly
Tr a y  2
Tr a y  3
Tr a y  4
ADF and Scanner
MPF
Tr a y  1
Tr a y  2
Tr a y  3Tr a y  4
3TM (optional)
Finisher
(optional) Booklet maker unit
(optional)
Standard media exit
roll assembly
Fuser exit
roll assembly
Duplex media
transport roll
assembly
2nd transfer
roll assembly
Bridge unit assembly
(included with finisher)
Tray module transport
roll assembly
TTM
Pick roll
Feed roll...

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MFP sensors
Functions of main components
•Media tray assembly
•Media feed unit assembly
•MPF 
•Xerographics 
•Transfer
•Fuser
•Drive
•Electrical components and rolls
Media tray assembly 
It is necessary to adjust the media tray rear guide and media tray end guide of the media tray assembly to match 
the media size. 
ADF and Scanner
MPF
Tr a y  1
Sensor (fuser exit)
Sensor (media on belt)
Sensor (duplex wait)
Sensor (tray 1 feed out)Sensor...

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Rear media guide
The rear media tray guide assembly can be adjusted to different media sizes by moving it to the front or rear. The 
rear guide come into contact with the media and hold it in position.
End guide
The media tray assembly is designed so it can adapt to the media length in the media feed direction by moving the 
end guide to the left or right. 
Bottom plate
The force pushing up the bottom plate is transmitted by the driving force of the motor on...