Lexmark CS720dte CS720de CS727de CS725dte CS725de CS728de C4150 Service Manual and Parts List Manual

This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Lexmark.
You can print, zoom or read any diagram, picture or page from this Service Manual and Parts List Manual. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Lexmark CS720dte CS720de CS727de CS725dte CS725de CS728de C4150. You can find easily everything what do you need.
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
Paper jams
Avoiding jams
Identifying jam locations
Paper jam in trays
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
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
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

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
Additional input tray diagnostics
Configuration Menu
Service Engineer menu
Entering Invalid engine mode
Entering the Service Engineer (SE) menu
General SE
Network SE

Removal precautions
Data security notice
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
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 removal
Control panel removals
Upper control panel removal
Badge cover removal
Number pad cover removal
Control panel arms removal
Speaker removal
Control panel base cover removal
Duplex removals
Duplex outer guide removal
Duplex inner 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
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
Aligner idler gears removal
Isolation unit removal
Media feeder removal
Paper out actuator spring 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 printhead lenses
Cleaning the main tray duplex turnaround

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


Part number index
Part name index

Lexmark CS720 CS725 CS727 CS728 C4150 5028-135 5028-630 5028-639