Lexmark MX622ade MX622adhe MB2650ade XM3250 Service Manual and Parts List Manual

Machine type / model: 7018-676 7018-678 7018-679
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 MX622ade MX622adhe MB2650ade XM3250 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

Printer model configurations
Finding the serial number
Supported paper sizes, types, and weights
Supported paper sizes
Supported paper types
Supported paper weights
Tools required for service

Troubleshooting overview
Performing the initial troubleshooting check
Power-on Reset (POR) sequence
Using Safe Mode
Fixing print quality issues
Initial print quality check
Gray background or toner fog check
Blank pages check
Print is too dark check
Print is too light check
Paper curl check
Folded or wrinkled paper check
Solid black pages check
Repeating defects check
Skewed print check
Streaked vertical lines appear on prints check
Horizontal light bands check
Vertical light bands check
Vertical dark bands check
Vertical dark streaks with print missing check
White streaks and voided areas check
Fine lines are not printed correctly (specifically Chinese characters) check
Clipped pages or images check
Compressed images appear on prints check
Incorrect margins on prints check
Toner rubs off check
Toner specks appear on prints check
Paper jams
Avoiding jams
Identifying jam locations
Paper jam in the automatic document feeder
Paper jam in the standard bin
Paper jam in door A
Paper jam in door B
Paper jam in the duplex unit
Paper jam in the multipurpose feeder
Paper jam in trays
Paper jam in the finisher
Staple jam in the finisher
200 paper jams
202-221 paper jams
230 paper jams
240-241 paper jams
242-244 paper jams
280 paper jams
281 paper jams
284 paper jams
29y paper jams
4yy paper jams
User attendance messages (0-99.99)
User attendance messages
Unsupported or unresponsive toner cartridge service check
Unsupported or unresponsive imaging unit service check
Mismatched supplies error service check
Maintenance kit low service check
Printer hardware errors
111 errors
121 errors
126 errors
128 errors
133 errors
140 errors
155 errors
16y errors
171 errors
6yy errors
Procedure before starting the 9yy service checks
900 errors
ADF/Scanner hardware errors
84y errors
Other symptoms
Fax symptoms

Understanding the printer control panel
Using the control panel
Understanding the status of the power button and indicator light
Using the home screen
Diagnostics menu
Entering the Diagnostics menu
Advanced Print Quality Samples
Format Fax Storage
Event log
Input tray quick print
Output bin quick feed
Printer Setup
Printer diagnostics and adjustments
Scanner diagnostics
Additional input tray diagnostics
Output device diagnostics
Configuration Menu
Service Engineer menu
Entering Invalid engine mode
Entering the Service Engineer (SE) menu
General SE
Network SE
Fax SE
Scan 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
Ribbon cable connectors
Zero Insertion Force (ZIF) connectors
Horizontal top contact connector
Horizontal bottom contact connector
Vertical mount contact connector
Horizontal sliding contact connector
Low Insertion Force (LIF) connector
Printhead assembly adjustment
Removal procedures
Left side removals
Left cover removal
Main drive gearbox removal
MPF gearbox removal
Fuser actuator removal
Reverse solenoid removal
MPF solenoid removal
Cartridge gearbox removal
Right side removals
Right cover removal
Hard drive removal
Interconnect cable removal
Sensor (tray present) removal
Cooling fan removal
Controller board removal
Fax card removal
Toner cartridge smart chip contact removal
Cartridge barrel shutter sensor kit removal
Front removals
Nameplate removal
MPF with front access cover removal
Top access cover removal
Bezel removal
Control panel display assembly removal
Control panel covers and buttons removal
Scanner front cover removal
Speaker removal
Control panel flat cable removal
Transfer roller removal
Jam access cover removal
Sensor (front door) removal
MPF pick roller and separator pad removal
Sensor (MPF paper present) removal
Front input guide removal
Front USB port removal
Bottom removals
Power supply removal
Duplex removal
Sensors (duplex and input) removal
Sensor (index) removal
Pick roller assembly removal
Motor (pick) assembly removal
Sensor (toner density) removal
Sensor (paper present) removal
Sensor (trailing edge) removal
Paper present sensor flag removal
Pick/lift motor gearbox removal
Lift cam removal
Sensor (narrow media) removal
Rear side removals
Scanner rear cover removal
Rear door and cover removal
Redrive assembly removal
Fuser removal
Redrive gear assembly removal
Top removals
Top cover removal
Sensor (bin full) removal
Printhead removal
ADF/scanner removals
ADF restraint pad removal
ADF roller removal
ADF separator roller removal
ADF tray removal
Scanner assembly removal
ADF assembly removal
ADF left hinge removal
ADF right hinge removal
ADF access door removal
Flatbed scanner assembly removal
ADF flat cable removal
ADF cable removal
Optional 550-sheet tray removals
Separator roller assembly removal
Optional staple finisher removals
Staple finisher option removal
Stapler cartridge access door removal
Staple roll holder removal
Stapler right cover removal
Stapler left cover removal
Stapler rear door removal
Sensor (stapler access door) removal
Stapler carriage assembly removal
Stapler door close limit switch removal
Motor (stapler paddle) removal
Stapler rear cover removal
Sensor (stapler rear cover) removal
Trapped staple access door removal
Stapler service cover removal
Stapler controller board removal
Motor (stapler left tamper) removal
Motor (stapler right tamper) removal
Stapler rear cover close limit switch removal
Stapler cooling fan removal
Stapler power supply unit removal
Stapler interface cable removal
Stapler top cover removal
Sensor (stapler bin full receive) removal
Sensor (stapler bin full send) removal
Sensor (stapler pass through) removal
Tamper main assembly removal
Tamper sub-assembly removal
Tamper drive belt removal
Diverter gearbox removal
Stapler accumulator assembly removal
Sensor (stapler right tamper HP) removal
Sensor (stapler left tamper HP) removal
Sensor (stapler paddle HP) removal

Printer configurations
Attaching cables
Printer roller locations
Printer sensor locations
Controller board connectors

Inspection guide
Scheduled maintenance
Maintenance kits
Resetting the maintenance counter
Lubrication specification
Cleaning the printer
Cleaning the printer
Cleaning the scanner
Cleaning the printhead lenses

Assembly 1: Covers
Assembly 2: Control panel
Assembly 3: Electronics 1
Assembly 4: Electronics 2
Assembly 5: Electronics 3
Assembly 6: Electronics 4
Assembly 7: Paper transport 1
Assembly 8: Paper transport 2
Assembly 9: MPF and standard tray
Assembly 10: Optional trays
Assembly 11: Imaging
Assembly 12: Fax card and hard disk
Assembly 13: Staple finisher option
Assembly 14: Staple finisher (right)
Assembly 15: Staple finisher (top)
Assembly 16: Staple finisher (rear)
Assembly 17: Staple finisher exit assembly
Assembly 18: Staple finisher tamper assembly
Assembly 19: Staple finisher accumulator assembly
Assembly 20: Maintenance kits
Assembly 21: Miscellaneous

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

Available internal options
Input/output configurations and capacities

POR sequence
Printer control
Print cycle operation
Print engine layout
Print cycle
Printer operation
Printer sections
Printer paper path
Printer paper path sensors
Main drive
Tray drive
ADF and scanner operation
Flatbed scanner drive
ADF paper path
ADF paper path sensors


Part number index
Part name index

Lexmark MX622ade MX622adhe MB2650ade XM3250 MB2650 MX622 XM3250 mfps 7018-676 7018-678 7018-679