Lexmark CX725dth CX725dhe CX725de CX727de XC4140 XC4150 Service Manual and Parts List Manual

Machine type / model: 7528-196, 7528-576, 7528-578, 7528-598

Accurate, clear and concise text, combined with detailed illustrations, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present service manual and parts list manual Lexmark CX725dth CX725dhe CX725de CX727de XC4140 XC4150 contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

Product information
Edition notice
Notices, conventions, and safety information
Laser notice
Safety information
General caution statements
Change history
Change history

Finding the serial number
Paper and specialty media guide
Paper guidelines
Using specialty media
Supported paper sizes, types, and weights
Data security notice
Tools required for service

Troubleshooting overview
Performing the initial troubleshooting check
Power-on reset (POR) sequence
Fixing print quality issues
Initial print quality check
Toner easily rubs off check
Background or gray background check
Blank or white pages check
Gapping or half color page check
Blurred print or misaligned color check
Horizontal colored lines or banding check
Text or images cut off check
Mottled print and dots check
Vertical white lines check
Ghost images check
Solid color or black image check
Vertical colored lines or banding check
Image void scan direction check
Image void process direction check
Dark print check
Missing color check
Uneven print density check
Repeating defects check
Random marks check
Light print check
Skewed print service check
Marks on leading or trailing edges check
RFID tag silhouette on prints check
Fixing scan quality issues
Dark image quality (using the ADF or scanner) check
Vertical lines (process direction using the ADF) check
Spots (using the flatbed scanner) check
ADF skew check
Media damage (using the ADF) check
Paper jams
Avoiding jams
Identifying jam locations
Paper jam in trays
Paper jam behind door E
Paper jam in the multipurpose feeder
Paper jam in the standard bin
Paper jam in door A
200 paper jams
201 paper jams
202 paper jams
203 paper jams
211 paper jams
221 paper jams
230 paper jams
231 paper jams
232 paper jams
240 paper jams
241 paper jams
242-244 paper jams
28y and 680 paper jams
User attendance messages
Non-Lexmark supply
31 user attendance errors
32 user attendance errors
33 user attendance errors
42 user attendance errors
43 user attendance errors
80 user attendance errors
82 user attendance errors
83 user attendance errors
84 user attendance errors
85 user attendance errors
88 user attendance errors
Non-supply user attendance errors
Printer hardware errors
100 errors
102 errors
110 errors
120 errors
121 errors
126-127 errors
128 errors
142 errors
144 errors
145 errors
147 errors
149 errors
150 and 160 errors
151 errors
153 errors
161-164 errors
166-168 errors
17y errors
621 errors
647 errors
649 errors
650 errors
653 errors
660 errors
661-668 errors
Procedure before starting the 9yy service checks
900 errors
91y errors
938 errors
95y errors
96y errors
97y errors
980-984 errors
985 errors
99y errors
ADF/scanner hardware errors
8yy error messages
Scanner disabled error service check
Scanner communication failure service check
Scanner configuration error service check
Scan/fax/copy symptoms
Black or blank page copy service check
Flatbed motor service check
Flatbed home position service check
ADF rattling noise service check
Flatbed legal-size scan service check
ADF feed errors service check
ADF duplex service check
Modem/fax card service check
Blank spaces on incoming fax service check
Stretched words on incoming fax service check
Fax reception service check
Fax transmission service check
Fax error log codes
Escalating a fax issue to second-level support
Other symptoms
Base printer symptoms
Control panel service check
Interlock switch service check
Sensor (narrow media) and sensor (fuser buckle) service check
Dead machine service check
Mobile solutions module NFC service check
Network service check
Toner meter cycle (TMC) card service check
USB service check
Control panel USB cable service check
Toner patch sensing service check
Auto alignment service check
Printer fails to program RFID tags service check
Behavioral issues (without error codes) of printers with RFID Option
The printer runs slow service check

Understanding the printer control panel
Using the control panel
Understanding the status of the power button and indicator light
Using the home screen
Menus list
Configuring the door interlock bypass jumpers
Diagnostics menu
Entering the Diagnostics menu
Event Log
Advanced Print Quality Samples
Input tray quick print
Printer Setup
Printer diagnostics and adjustments
Scanner Diagnostics
Additional input tray diagnostics
Configuration Menu
Service Engineer menu
Entering Invalid engine mode
Entering the Service Engineer (SE) menu
General SE
Network SE
Fax SE
Scan SE

Data security notice
Removal precautions
Handling ESD-sensitive parts
Controller board/control panel replacement
Restoring the printer configuration after replacing the controller board
Restoring solutions, licenses, and configuration settings
Updating the printer firmware
Backing up eSF solutions and settings
Disconnecting ribbon cables
Printhead alignment adjustment
Registration adjustment
Scanner Manual Registration
ADF registration adjustment
Flatbed registration adjustment
Removal procedures
Cover removals
Front cover removal
Top cover removal
Left cover removal
Right cover removal
Motor cover removal
Toner door removal
Toner door mount bracket removal
Toner door mount frame removal
Output bin cover removal
Top frame cover removal
Top frame base cover removal
Scanner rear right cover removal
Scanner rear left cover removal
Control panel removals
Lower control panel bezel removal
Control panel bezel removal
Control panel removal
Control panel tub removal
Control panel tub mounting bracket removal
Control panel arms removal
Control panel FFC cable removal
Duplex removals
Duplex inner guide removal
Duplex outer guide removal
Pivot shaft removal
Tensioner belt removal
Sensor (duplex) removal
Sensors (fuser buckle and narrow media) removal
Left removals
Motor (EP drive) removal
Power cable removal
Motor (output) removal
Motor (deskew) removal
Fuser fan removal
Main fan removal
EP gear box removal
LVPS removal
LVPS cage removal
Motor (black only retract) removal
Right removals
Sensor (weather station) removal
Sensor (paper size) removal
Sensor (waste toner contact) removal
TMC card removal
Motor (duplex/MPF) removal
Motor (fuser) removal
HVPS removal
Sensor (MPF paper present) removal
Waste toner bottle idler gear removal
Imaging unit cover removal
Sensor (TPS) removal
TPS sled removal
Toner cartridge contacts removal
TPS wiper mechanism removal
TPS wiper removal
Front removals
Fuser removal
Transfer module removal
Transfer module guide rail removal
Sensor (media type) removal
Sensor (input) removal
Deskew rollers removal
Diverter removal
Redrive guide removal
Sensor (redrive) removal
Rear removals
Controller board shield removal
Inner controller board shield removal
Controller board removal
TPS cables removal
Modem removal
Hard disk drive removal
Secure element SIM card removal
Top removals
Printhead removal
Developer hold down removal
Output roll removal
Output bin exit cover removal
Output bin flag removal
Bottom removals
Front cover hinges removal
Tray rail removal
Media feeder removal
Isolation unit removal
Aligner idler gears removal
Paper out actuator spring removal
ADF and flatbed removals
ADF removal
Facade removal
Speaker removal
ADF top cover removal
ADF left hinge removal
ADF right hinge removal
Scanner front cover removal
Left flatbed cover removal
Flatbed removal
Scanner cable cover removal
Scanner tilt removal
550-sheet tray removals
550-sheet tray right cover removal
Motor (550-sheet tray pass-through) removal
550-sheet tray paper feeder removal
Sensor (550-sheet tray pass-through) removal
Sensor (550-sheet tray trailing edge) removal
Sensor (550-sheet tray paper size) removal
550-sheet tray controller board assembly removal
550-sheet tray interface cable removal
550-sheet tray empty sensor actuator removal
Sensor (550-sheet tray empty) removal
Sensor (550-sheet tray index) removal

Printer configurations
Controller board connectors
LVPS controller board connectors
Motor locations
Sensor locations

Inspection guide
Scheduled maintenance
Maintenance kits
Identifying the type of fuser used in the printer
Resetting the maintenance counter
Cleaning the printer
Cleaning the printer
Cleaning the scanner glass
Cleaning the printhead lenses
Cleaning the main tray duplex turnaround

Assembly 1: Covers 1
Assembly 2: Covers 2
Assembly 3: Control panel
Assembly 4: ADF and flatbed
Assembly 5: Fuser
Assembly 6: Transfer module
Assembly 7: Paper feed
Assembly 8: Paper path 1
Assembly 9: Paper path 2
Assembly 10: Duplex
Assembly 11: Electrical
Assembly 12: 550-sheet tray option 1
Assembly 13: 550-sheet tray option 2
Assembly 14: Adjustable stand
Assembly 15: Miscellaneous parts
Assembly 16: Power cords

Power consumption
Product power consumption
Sleep Mode
Hibernate Mode
Off mode
Total energy usage
Selecting a location for the printer
Noise emission levels
Temperature information
Enabling the security reset jumper

Available internal options
Installing optional trays
Adding available options in the print driver

Paper path and transport components
Tray section
MPF section
Isolation unit section
Aligner section
Fuser section
Duplex section
Print engine theory
Electrophotographic process
EP process basics
ADF theory
ADF paper path
ADF paper path sensors
ADF tray pick and feed
ADF separation
ADF registration
ADF scan and exit
ADF duplex
Color theory
Color theory


Part number index
Part name index

Lexmark 7528-196 7528-576 7528-578 7528-598 CX725 CX727 XC4140 XC4150 MFPs CX725dth CX725dhe CX725de CX727de XC4140 XC4150