Lexmark MS312, Service Manual & Parts List

Service Manual & Parts List Lexmark MS312;
This manual, Lexmark MS312, is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your copier.
You can print, zoom or read any diagram, picture or page from this Service 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 MS312 photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

Product information
Edition notice
Notices and safety information
Laser notices
Safety information
Service manual conventions

Media guidelines
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
Gray background or toner fog check
Blank pages check
Solid black pages check
Repeating defects check
Shadow images check
Skewed print check
Streaked horizontal or vertical lines appear on prints check
Toner smear check
Toner specks appear on prints check
Paper jams
Avoiding jams
Understanding jam messages and locations
200 paper jams
201 paper jams
202 paper jams
23y paper jams
241 paper jams
242 paper jams
25y paper jams
Understanding the printer messages
Bin full. Remove paper
Cannot collate large document [37]
Cannot defrag flash memory [37]
Cartridge, imaging unit mismatch [41.xy]
Cartridge low [88.xy]
Cartridge nearly low [88.xy]
Cartridge very low, [x] estimated pages remain [88.xy]
Change [paper source] to [custom string]. Load [orientation]
Change [paper source] to [custom type name]. Load [orientation]
Change [paper source] to [paper size]. Load [orientation]
Change [paper source] to [paper type] [paper size]. Load [orientation]
Close front door
Complex page may misprint [39]
Credentials invalid. Print job canceled
Defective flash memory [51]
Flash memory full [52]
Flash memory unformatted [53]
Imaging unit low [84.xy]
Imaging unit nearly low [84.xy]
Imaging unit very low, [x] estimated pages remain [84.xy]
Insert tray [x]
Load [paper source] with [custom string] [orientation]
Load [paper source] with [custom type name] [orientation]
Load [paper source] with [paper size] [orientation]
Load [paper source] with [paper type] [paper size] [orientation]
Load MP feeder with [custom type name] [orientation]
Load MP feeder with [custom string] [orientation]
Load MP feeder with [paper size] [orientation]
Load MP feeder with [paper type] [paper size] [orientation]
Memory full [38]
Memory low, no Resource Save [35]
Non-Lexmark [supply type], see User’s Guide [33.xy]
Network error, port [x] [54]
Network error, standard port [54]
Paper too short [34]
Parallel port disabled [56]
Print quota exceeded. Print job canceled
Print quota exceeded. Print job incomplete
Printer restart. Check last job
Rear USB port disabled [56]
Reinstall missing or unresponsive cartridge [31.xy]
Reinstall missing or unresponsive imaging unit [31.xy]
Replace cartridge, 0 estimated pages remain [88.xy]
Replace cartridge, printer region mismatch [42.xy]
Replace imaging unit, 0 estimated pages remain [84.xy]
Replace unsupported cartridge [32.xy]
Replace unsupported imaging unit [32.xy]
Too many trays. Remove some. [58]
User attendance messages (0-99.99)
User attendance messages (0-99.99)
Toner cartridge smart chip contact service check
Imaging unit smart chip contact service check
Toner smart chip compatibility service check
Imaging chip compatibility service check
Media size mismatch service check
Insufficient memory service check
Printer/cartridge mismatch service check
Flash full service check
Imaging unit low service check
Toner cartridge low service check
Printer hardware errors
111 errors
121 errors
126 errors
132 errors
133 errors
140 errors
155 errors
Steps before starting the 9yy service checks
900 errors
912 errors
94y errors
950�958 errors
959 errors
96y errors
97y errors
98y errors
99y errors
Base printer symptoms
Cooling fan service check
Dead machine service check
Controller board service check
Control panel button service check
Control panel service check
Toner starvation service check
USB print service check
Network service check
Input option hardware errors
3yy error messages
Option tray pick/lift motor service check
Option tray separator/pass through motor service check
Option tray ACM motor service check
Option tray controller card service check

Understanding the printer control panel
Using the printer control panel
Understanding the colors of the indicator and Sleep button lights
Menus list
Diagnostics menu
Entering the Diagnostics menu
Print Tests
Print Quality Pages
Hardware Tests
Duplex Tests
Input Tray Tests
Output Bin Tests
Base Sensor Test
Device Tests
Printer Setup
EP Setup
Event Log
Exit Diags
Configuration menu
Entering the Configuration menu
Factory Defaults
Tray Linking
Panel Menus
PPDS Emulation
Print Quality Pages
A5 Loading
Safe Mode
Demo Mode
Energy Conserve
Wipe All Settings
Font Density
Font Sharpening
USB Speed
Exit Config Menu
Entering Invalid engine mode
Entering Recovery mode
Accessing the Network SE menu
Service engineer menu
Accessing the service engineer (SE) menu
Service engineer (SE) menu

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
Using the flash drive
Using a network computer
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 adjustments
Removal procedures
Left side removals
Left cover removal
Main drive gearbox removal
MPF solenoid removal
MPF gearbox removal
Reverse solenoid removal
ACM clutch removal
Cartridge gearbox removal
Duplex gear assembly removal
Right side removals
Right cover removal
Cooling fan duct removal
Cooling fan removal
Controller board removal
Toner cartridge smart chip contact removal
Front removals
Left front mount removal
Right front mount removal
Transfer roll removal
Cartridge plunger removal
Bezel removal
Nameplate removal
Control panel assembly removal
UICC removal
MPF assembly removal
MPF pick roller cover removal
MPF pick roller removal
Bail removal
Jam access cover removal
Front door removal
Front access cover removal
Front door sensor removal
Front input guide removal
Separator pad removal
Bottom removals
Power supply removal
Power supply shield removal
Duplex removal
Duplex sensor and input sensor removal
Toner density sensor removal
Trailing edge sensor removal
ACM assembly removal
Rear side removals
Dust cover removal
Rear door and cover removal
Narrow media/bin full sensor removal
Redrive assembly removal
Redrive shaft removal
Fuser removal
Top side removals
Top cover removal
Laser scanning unit (LSU) removal
250/550-sheet option tray removals
Pick roller removal
Separator roll assembly removal
ACM assembly removal

Exterior locations
Front view
Rear view

Inspection guide
Lubrication specification
Cleaning the printer

Assembly 1: Covers
Assembly 2: Electronics 1
Assembly 3: Electronics 2
Assembly 4: Frame
Assembly 5: Option trays
Assembly 6: Power cords
Assembly 7: Miscellaneous

Appendix A: Printer specifications
Product power consumption
Electrical specifications
Operating clearances
Operating environment

Appendix B: Options and features
Available internal options
Media handling options

Appendix C: Theory of operation
POR sequence
Printer control
Paper path information
Input tray
Multipurpose feeder (MPF)
Simplex printing
Duplex printing
Media handling components
Main drive gearbox
Autocompensator mechanism (ACM)
Key components
Other key components
Electrophotographic process (EP process)

Appendix D: Acronyms
Part number index
Part name index

Number of pages: 295.