Lexmark CS921 CS921de CS927 CS927de C9235 Service Manual and Parts List Manual

Machine type / model: 5059-130, 5059-190


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 CS921 CS921de CS927 CS927de C9235 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
Conventions
Safety information
General caution statements
Change history
Change history

GENERAL INFORMATION
Printer model configurations
Finding the serial number
Supported paper sizes, types, and weights
Paper sizes supported by the printer
Paper types and weights supported by the printer
Paper sizes, types, and weights supported by the finishers
Data security notice
Tools required for service

DIAGNOSTICS AND TROUBLESHOOTING
Troubleshooting overview
Performing the initial troubleshooting check
Fixing print quality issues
Initial print quality check
Horizontal colored lines or banding check
Vertical colored lines check
Vertical white lines check
White spots check
Missing color check
Mottled prints and dots check
Blurred print or misaligned color check
Gapping or half color page check
Ghost images check
Color reproduction error check
Repeating defects check
Skewed print check
Toner easily rubs off check
Back marking check
Blank or white pages check
Blurred fine lines check
Faulty image check
Foggy background check
Image bleeding check
Light print check
Moire image check
Poor fusing performance check
Uneven gloss check
Uneven print density check
Paper jams
Avoiding jams
Identifying jam locations
Paper jam in the multipurpose feeder
Paper jam in door C
Paper jam in door D
Paper jam in the 3000-sheet tray
200 paper jams
202 paper jams
230 paper jams
240 paper jams
241 paper jams
242 paper jams
243-245 paper jams
250 paper jams
User attendance messages
31-39 user attendance errors
42-59 user attendance errors
61-88 user attendance errors
Printer hardware errors
110 errors
12y errors
13y errors
14y errors
15y errors
16y errors
17y errors
18y errors
6yy errors
Procedure before starting the 9yy service checks
900 errors
Other symptoms
Base printer symptoms
Printer no power service check
Right door always open service check
Close door A service check
Tray 1 missing service check
Tray 2 missing service check
No control panel display service check
Five-beep sound service check
USB device not detected service check
Output bin empty service check

SERVICE MENUS
Understanding the printer control panel
Using the control panel
Understanding the status of the power button and indicator light
Using the home screen
Menu map
Printing a menu settings page
Diagnostics menu
Entering the Diagnostics menu
Event log
Reports
Advanced Print Quality Samples
Input tray quick print
Output bin quick feed
Printer setup
Printer diagnostics and adjustments
Additional input tray diagnostics
Entering the Configuration mode
Configuration menu
USB Configuration
Tray Configuration
Reports
Supply Usage And Counters
Printer Emulations
Print Configuration
Device Operations
App Configuration
Out of Service Erase
Exit Maintenance Menu
Service Engineer menu
Entering invalid engine mode
Entering the Service Engineer (SE) menu
General SE Menu
Network SE Menu
Parts removal
Data security notice
Removal precautions
Handling ESD-sensitive parts
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
Understanding the marked or colored screws
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
Adjustments
MPF separator roller pressure adjustment
Pick roller pressure adjustment
3000-sheet tray pick roller pressure adjustment
2500-sheet tray transfer guide belt adjustment
Registration adjustment
Color registration adjustment
Imaging process adjustment
Image stabilization
Paper separation adjustment
Black density adjustment
Voltage adjust
Transfer voltage fine adjustment
Second transfer adjustment
Removal procedures
Left side removals
Left cover removal
Bottom left cover removal
Rear left cover removal
Left handles removal
Main power supply shield removal
Main power supply fan removal
Main power supply removal
Printhead removal
Printhead relay board removal
Right side removals
Transfer roller removal
Port cable guide removal
Right door removal
Port access door removal
Tray empty board mount removal
USB port cover removal
Port mount removal
Top right cover removal
Top right edge cover removal
Transfer belt removal
Fuser removal
Duplex transport assembly removal
Duplex primary gear removal
Duplex secondary gear removal
Duplex transport belt removal
Duplex transport gear removal
Duplex transport diverter assembly removal
Sensor (fuser exit) removal
Fuser exit sensor actuator removal
Duplex redrive diverter gear removal
Duplex transport jam removal knob removal
Fuser exit sensor cable removal
Motor (duplex transport) removal
Right door lock removal
Tray 2 transport guide removal
MPF removal
MPF hinge arm removal
Sensor (MPF paper present) removal
MPF paper present sensor cable removal
MPF tray removal
MPF paper empty flag removal
MPF paper width gear removal
Sensor (MPF paper width) removal
Sensors (MPF paper length) removal
MPF paper guide pinion gear removal
MPF rear paper guide removal
MPF front paper guide removal
MPF rear paper guide 2 removal
MPF front paper guide 2 removal
MPF feed clutch removal
MPF feed clutch gear removal
MPF lift plate solenoid removal
MPF lift plate cam removal
MPF lift plate clutch gear removal
MPF paper length actuators removal
MPF paper size sensor cable removal
MPF separator access cover removal
MPF pick roller removal
MPF separator gear removal
MPF separator idler gear removal
MPF separator roller removal
Sensor (MPF lift plate) removal
MPF lift plate sensor cable removal
Tray 1 and 2 paper feed unit removal
Registration transport assembly removal
Sensor (registration humidity) removal
Toner density solenoid removal
Sensor (registration) removal
Registration primary gear removal
Registration secondary gear removal
Registration unit assembly removal
Registration unit sub-assembly removal
Sensor (fusing speed) removal
Fusing speed sensor actuator removal
Sensor (duplex pass through 2) removal
Registration drive belt removal
Registration drive gear removal
Lower registration gear removal
Registration clutch removal
Registration transport resistor removal
Registration unit gear removal
Registration unit lock and spring removal
Registration unit resistor removal
Registration unit sensor cable removal
Registration unit handle removal
Sensor (first transfer pressure) removal
Sensor (front toner density) removal
Sensor (rear toner density) removal
Toner density sensor cable removal
Exit assembly removal
Redrive exit and clutch exit belts removal
Diverter solenoid removal
Motor (redrive) removal
Right handles removal
Front side removals
Front door removal
Speaker bottom cover removal
Speaker cover removal
Control panel front cover removal
Model plate removal
Control panel board removal
Control panel FFC removal
Keypad removal
Control panel rear cover removal
Control panel support base removal
Control panel cable guide cover removal
Control panel hinge removal
Control panel cable guide upper cover removal
Control panel cable guide lower cover removal
Standard bin LED removal
Standard bin exit assembly removal
Redrive exit guide removal
Sensor (redrive exit) removal
Redrive exit sensor cable removal
Redrive exit sensor actuator removal
Speaker removal
Right door switch removal
Tray 1 and tray 2 stoppers removal
Tray 1 and tray 2 rail guide wheels removal
Tray 1 and tray 2 empty LEDs removal
Tray empty LED cover removal
Tray empty LED removal
Tray empty LED mount removal
Tray empty LED cable removal
Erase LED removal
Front inner cover removal
Image controller board removal
Waste toner door mount removal
Developer unit (Y) removal
Developer unit (M) removal
Developer unit (C) removal
Developer unit (K) removal
Toner cartridge contact removal
Sensor (toner empty) removal
Photoconductor release lever removal
Waste toner bottle latch removal
Sensor (tray 1 paper length) removal
Sensor (tray 2 paper length) removal
Sensor (tray 1 near empty) removal
Sensor (tray 2 near empty) removal
Tray rollers removal
Photoconductor relay contact removal
Main power switch and main power cable removal
Fuser power cable removal
Door switch removal
Toner agitator removal
Motor (toner supply) removal
Transfer belt fan and duct removal
Motor (K toner supply) removal
Waste toner drive removal
Waste toner duct removal
Rear side removals
Latch covers removal
Air deflector hood removal
Fuser exhaust grill removal
Fuser exhaust filter removal
Scanner interface cable cover removal
Upper rear cover removal
Lower rear cover removal
Option interface cable cover removal
Expansion controller board removal
Center guide bracket removal
Controller board shield removal
Controller board removal
Engine board removal
Controller board frame removal
Printhead FFC removal
Power saving board removal
Interconnect board removal
High voltage board removal
Motor (fuser pressure) removal
Motor (fuser) removal
Motor (transport) removal
Motor (developer) removal
Motor (photoconductor) removal
Motor (CK toner cartridge) removal
Motor (MY toner cartridge) removal
Motor (C toner supply) removal
Motor (M toner supply) removal
Motor (Y toner supply) removal
Toner cartridge cooling fan removal
Paper exit fan removal
Fuser drive gearbox removal
Fuser knob removal
Motor (tray 1 lift) removal
Motor (tray 2 lift) removal
Sensor (tray 1 paper width) removal
Sensor (tray 2 paper width) removal
High voltage developer contact removal
Fuser drive clutch 1 removal
Fuser drive clutch 2 removal
Main drive assembly removal
Duplex clutch removal
K developer solenoid removal
Feed drive assembly removal
First transfer pressure sensor cable removal
Transfer belt charge cable removal
Power socket removal
Power socket cable removal
High voltage transfer and charge cables removal
High voltage contact removal
Sensor (tray 1 and tray 2 paper temperature) removal
Top side removals
Top cover removal
HPT bin paper bail removal
Top cover support base removal
Standard bin removal
Standard bin base removal
Right bin side cover removal
Top corner cover removal
Bin side cover removal
Toner supply gear 2 removal
Toner cartridge cooling fan removal
K toner supply motor cable removal
Bottom side removals
Sensor (tray 1 empty) removal
Sensor (tray 1 feed) removal
Sensor (tray 1 lift plate level) removal
Sensor (tray 2 empty) removal
Sensor (tray 2 feed) removal
Sensor (tray 2 lift plate level) removal
Sensor (tray 2 transport) removal
Tray 1 empty sensor actuator removal
Tray 1 feed clutch removal
Tray 1 feed roller clutch removal
Tray 1 feed unit removal
Tray 1 pick roller clutch removal
Tray 1 feed unit cable removal
Tray 1 separator and transport guide assembly removal
Tray 1 separator assembly removal
Tray separator roller clutch removal
Tray 1 tray set actuator removal
Tray 2 feed clutch removal
Tray 2 feed gear removal
Tray 2 feed unit cable removal
Tray 2 idler gear removal
Tray 2 separator assembly removal
Tray 2 transfer roller removal
Tray 2 transport clutch removal
Tray 2 transport gear removal
Tray 2 transport sensor cable removal
Tray 2 tray set actuator removal
Tray insert guide wheels removal
Tray near empty sensor actuator removal
Tray lock removal
2500-sheet tray removals
2500-sheet tray rear cover removal
2500-sheet tray rear right cover removal
2500-sheet tray lower right cover removal
2500-sheet tray LED cover removal
2500-sheet tray empty LED removal
2500-sheet tray front right cover removal
2500-sheet tray left cover removal
2500-sheet tray jam access cover removal
2500-sheet tray jam access door strap removal
2500-sheet tray controller board removal
2500-sheet tray division board removal
2500-sheet tray main tray empty sensor bottom actuator removal
2500-sheet tray elevator home sensor actuator removal
2500-sheet tray transfer guide stop removal
Sensor (2500-sheet tray elevator home) removal
Sensor (2500-sheet tray main tray empty, bottom) removal
2500-sheet tray paper stack transfer guide removal
2500-sheet reserve tray empty sensor actuator removal
Sensor (2500-sheet tray transfer guide home) removal
Sensor (2500-sheet tray reserve tray empty) removal
Sensor (2500-sheet paper stack transfer) removal
Sensor (2500-sheet tray reserve tray paper limit) removal
2500-sheet reserve tray paper limit sensor actuator removal
Sensor (2500-sheet tray main tray near empty) removal
Sensor (2500-sheet tray main tray empty, top) removal
Sensor (2500-sheet tray main tray elevator limit) removal
Sensor (2500-sheet tray feed) removal
Sensor (2500-sheet tray transport) removal
Sensor (2500-sheet tray jam access door) removal
Sensor (2500-sheet tray set) removal
Motor (2500-sheet tray elevator) removal
Motor (2500-sheet tray feed) removal
Motor (2500-sheet tray transfer guide) removal
Motor (2500-sheet tray transport) removal
2500-sheet tray paper feed assembly removal
2500-sheet tray transport roller removal
2500-sheet tray vertical media transport guide assembly removal
2500-sheet tray pick assembly removal
2500-sheet tray stopper removal
2500-sheet tray caster wheel removal
2 x 500-sheet tray removals
Paper length sensor actuator removal
Sensor (2 x 500-sheet tray jam access door) removal
2 x 500-sheet tray caster wheel removal
Printer rubber stopper removal
Tray insert paper length guide removal
2 x 500-sheet tray rollers removal
Sensor (2 x 500-sheet tray paper length) removal
2 x 500-sheet tray left cover removal
2 x 500-sheet tray empty LED cover removal
2 x 500-sheet tray empty LED removal
2 x 500-sheet tray empty LED mount removal
2 x 500-sheet tray rear cover removal
Motor (2 x 500-sheet tray lift) removal
Sensor (2 x 500-sheet tray near empty) removal
Sensor (2 x 500-sheet tray paper width) removal
2 x 500-sheet tray feed and transport motors removal
2 x 500-sheet tray controller board removal
2 x 500-sheet tray jam access door removal
2 x 500-sheet tray rear right cover removal
2 x 500-sheet tray bottom right cover removal
2 x 500-sheet tray 3 transport assembly removal
2 x 500-sheet tray 4 transport assembly removal
2 x 500-sheet tray transport assembly sensors removal
2 x 500-sheet tray tray set actuator removal
Sensor (2 x 500-sheet tray transport) removal
2 x 500-sheet tray 3 transport belts and gears removal
2 x 500-sheet tray 4 transport belts and gears removal
3000-sheet tray removals
3000-sheet tray rollers removal
3000-sheet tray feed and pick belt removal
3000-sheet tray caster wheel removal
3000-sheet tray release handle removal
3000-sheet tray left cover removal
3000-sheet tray right cover removal
3000-sheet tray front cover removal
3000-sheet tray rear cover removal
3000-sheet tray door removal
3000-sheet tray left top cover removal
Dehumidifier removal
3000-sheet tray empty LED removal
Sensor (3000-sheet tray empty) removal
Sensor (3000-sheet tray elevator level) removal
Sensor (3000-sheet tray feed) removal
3000-sheet tray elevator spring removal
3000-sheet tray controller board removal
3000-sheet tray door switch removal
Motor (3000-sheet tray elevator) removal
3000-sheet tray set sensor actuator removal
Sensor (3000-sheet tray set) removal
Sensor (3000-sheet tray near empty) removal
Motor bracket removal
3000-sheet tray feed and transport motors removal
3000-sheet tray feed roller assembly removal
3000-sheet tray pick roller assembly removal

COMPONENT LOCATIONS
Printer configurations
Fusing and paper exit section
Rear 1
Rear 2
Fans
Toner cartridge section
Registration
Tray 1
Tray 2
MPF
Duplex

MAINTENANCE
Inspection guide
Scheduled maintenance
Maintenance kits
Resetting the maintenance counter
Cleaning printer parts
Cleaning the printer
Cleaning the printhead lens
Emptying the hole punch box

PARTS CATALOG
Legend
Assembly 1: Covers 1
Assembly 2: Covers 2
Assembly 3: Covers 3
Assembly 4: Inner covers
Assembly 5: Control panel 1
Assembly 6: Control panel 2
Assembly 7: Printhead
Assembly 8: Toner supply 1
Assembly 9: Toner supply 2
Assembly 10: Waste toner
Assembly 11: Developer
Assembly 12: Eraser
Assembly 13: Transfer belt
Assembly 14: Photoconductor
Assembly 15: Registration transport
Assembly 16: Transfer
Assembly 17: Registration unit
Assembly 18: Right door transport
Assembly 19: MPF 1
Assembly 20: MPF 2
Assembly 21: MPF 3
Assembly 22: Duplex 1
Assembly 23: Duplex 2
Assembly 24: Fuser
Assembly 25: Fuser drive 1
Assembly 26: Fuser drive 2
Assembly 27: Exit
Assembly 28: Main and feed drive
Assembly 29: Toner cartridge drive
Assembly 30: High voltage
Assembly 31: Main power supply
Assembly 32: Electrical 1
Assembly 33: Electrical 2
Assembly 34: Tray 1 and tray 2 transport
Assembly 35: Tray 1 feed
Assembly 36: Tray 2 feed
Assembly 37: Tray 1 separator
Assembly 38: Tray 2 separator
Assembly 39: Tray rail
Assembly 40: Tray paper detection
Assembly 41: 500-sheet tray-Tray 1
Assembly 42: 500-sheet tray-Tray 2
Assembly 43: 500-sheet tray-Tray 1 or tray 2
Assembly 44: 2 x 500-sheet tray-Covers
Assembly 45: 2 x 500-sheet tray-Frame
Assembly 46: 2 x 500-sheet tray-Paper feed
Assembly 47: 2 x 500-sheet tray-Paper size detection
Assembly 48: 2 x 500-sheet tray-Paper transport
Assembly 49: 2 x 500-sheet tray-Paper pick 1
Assembly 50: 2 x 500-sheet tray-Paper pick 2
Assembly 51: 2 x 500-sheet tray-Paper pick 3
Assembly 52: 2 x 500-sheet tray-Tray 3
Assembly 53: 2 x 500-sheet tray-Tray 4
Assembly 54: 2 x 500-sheet tray-Tray 3 and tray 4 frame
Assembly 55: 2500-sheet tray-Covers
Assembly 56: 2500-sheet tray-Frame
Assembly 57: 2500-sheet tray-Paper feed
Assembly 58: 2500-sheet tray-Paper transport
Assembly 59: 2500-sheet tray-Paper pick 1
Assembly 60: 2500-sheet tray-Paper pick 2
Assembly 61: 2500-sheet tray-Paper pick 3
Assembly 62: 2500-sheet tray-Tray insert 1
Assembly 63: 2500-sheet tray-Tray insert 2
Assembly 64: 2500-sheet tray-Tray insert 3
Assembly 65: 2500-sheet tray-Tray insert 4
Assembly 66: 3000-sheet tray-Covers
Assembly 67: 3000-sheet tray-Frame 1
Assembly 68: 3000-sheet tray-Frame 2
Assembly 69: 3000-sheet tray-Elevator front section
Assembly 70: 3000-sheet tray-Elevator rear section
Assembly 71: 3000-sheet tray-Paper feed 1
Assembly 72: 3000-sheet tray-Paper feed 2
Assembly 73: 3000-sheet tray-Paper transport
Assembly 74: 3000-sheet tray-Drive section
Assembly 75: 3000-sheet tray-Wiring
Assembly 76: Miscellaneous

PRINTER SPECIFICATIONS
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

OPTIONS AND FEATURES
Available internal options
Input/output configurations and capacities
Input capacity by paper and source
Supported output options

THEORY OF OPERATION
Power-on reset (POR)
Printer control
Print cycle operation
Print cycle
Print mode control
Photoconductor drive
Toner refill drive
Waste toner drive
Printer operation
Printer paper path
Tray section
MPF section
2500-sheet tray section
3000-sheet tray section
Registration section
Print section
Exit section
Duplex section

ACRONYMS
Acronyms

INDEX
Part number index
Part name index