Lexmark T650/T650N/T652DN/T654DN/T656DNE User Guide
Summary
This detailed service manual is essential documentation for maintaining and repairing Lexmark T650 series multifunction printers (T652, T654, etc.). It provides technicians with comprehensive diagnostic procedures, safety guidelines, and step-by-step instructions for component replacement—including sensors, printheads, side covers, and internal assemblies. Ideal for authorized service personnel and IT professionals requiring precise technical details to troubleshoot performance issues and keep the printing process running smoothly.
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Table of contents
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Notices and safety information
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Laser notice
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Laser
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Avis relatif à l’utilisation de laser
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Avvertenze sui prodotti laser
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Avisos sobre el láser
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Declaração sobre Laser
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Laserinformatie
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Lasermeddelelse
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Laserilmoitus
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Huomautus laserlaitteesta
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Laser-notis
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Laser-melding
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Avís sobre el Làser
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Lithium warning
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Consignes de sécurité
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Norme di sicurezza
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Sicherheitshinweise
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Pautas de Seguridad
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Informações de Segurança
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Informació de Seguretat
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Preface
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1. General information
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Maintenance approach
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Options
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Available internal options
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Media handling options
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Printer configurations
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Supported paper sizes, types, and weights
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Tools required
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Acronyms
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2. Diagnostic information
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Start
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Confirm the installation status
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Power-on Reset sequence
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Entering Diagnostics mode
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User attendance messages
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Error code table 1
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Service checks
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Sensor (input) service check
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Sensor (fuser output) service check
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Sensor (narrow media) service check
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Sensor (duplex input) service check
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Sensor (duplex input) service check (external duplex only)
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Sensor (duplex exit) service check (external duplex only)
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Sensor (pass through) service check
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Sensor (envelope feeder empty) service check
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Sensor (input) late jam service check.
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Sensor (input) lingering jam service check.
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Sensor (input) early jam service check
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Sensor (input) static jam service check
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Sensor (fuser output) late jam service check.
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Sensor (fuser output) lingering jam service check.
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Sensor (fuser output) static jam service check
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Sensor (narrow media) late jam service check.
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Sensor (narrow media) static jam service check
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Sensor (duplex input) late jam service check.
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Sensor (duplex input) lingering jam service check.
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Sensor (duplex input) static jam service check.
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Sensor (pass through) late jam service check
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Sensor (pass through) lingering jam service check.
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Sensor (pass through) static jam service check
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Sensor (stapler pass through) late jam service check
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Sensor (stapler pass through) lingering jam service check
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Sensor (stapler pass through) static jam service check
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Sensor (output pass through) late jam service check
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Sensor (output pass through) lingering jam service check
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Sensor (output pass through) static jam service check
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Sensor (mailbox empty) late jam service check
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Sensor (mailbox empty) lingering jam service check
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Sensor (mailbox empty) static jam service check
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Sensor (toner empty) service check
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NVRAM mismatch failure (950.00 through 950.29) service check
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Image quality trouble
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Printer Related Troubleshooting
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Image Quality
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Network service check
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3. Diagnostic aids
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Understanding the printer control panel (models T650, T652, and T654)
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Accessing service menus (models T650, T652, and T654)
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Diagnostics mode (models T650, T652, and T654)
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Entering Diagnostics mode (models T650, T652, and T654)
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Available tests
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Exiting Diagnostics mode (models T650, T652, and T654)
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REGISTRATION
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PRINT TESTS
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HARDWARE TESTS
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DUPLEX TESTS
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INPUT TRAY TESTS
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OUTPUT BIN TESTS
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StapleSmart FINISHER TESTS
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BASE SENSOR TEST
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PRINTER SETUP
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EP SETUP
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REPORTS
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EVENT LOG
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EXIT DIAGNOSTICS (models T650, T652, and T654)
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Configuration menu (CONFIG MENU) (models T650, T652, and T654)
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Entering Configuration Menu (models T650, T652, and T654)
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Available menus
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Maintenance page count (Maint Cnt Value)
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Maintenance page counter reset (Reset Cnt)
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Print quality pages (Prt Quality Pgs)
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Reports
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SIZE SENSING
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Panel Menus
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PPDS Emulation
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Demo Mode
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Factory Defaults
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LES Applications
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Energy Conserve
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Paper Prompts
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Env Prompts
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Action for Prompts
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Font Sharpening
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Wiper Messages
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Clear Custom Status
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Best Speed
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Exit Config Menu (models T650, T652, and T654)
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Understanding the printer control panel (model T656)
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Accessing service menus (model T656)
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Diagnostics Menu (model T656)
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Entering Diagnostics Menu (model T656)
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Available tests
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Registration (printer)
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PRINT TESTS
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HARDWARE TESTS
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DUPLEX TESTS
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INPUT TRAY TESTS
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OUTPUT BIN TESTS
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BASE SENSOR TEST
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DEVICE TESTS
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PRINTER SETUP
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EP SETUP
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REPORTS
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EVENT LOG
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Configuration menu (CONFIG MENU) (model T656)
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Entering Configuration Menu (model T656)
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Available menus
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Maintenance Counter Value
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Reset Maintenance Counter
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Print Quality Pages
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Reports
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SIZE SENSING
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Panel Menus
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PPDS Emulation
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Factory Defaults
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Energy Conserve
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Paper Prompts
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Envelope Prompts
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Action for Prompts
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Jobs On Disk
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Disk Encryption
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Wipe Disk
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Font Sharpening
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Require Standby
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LES Applications
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Key Repeat Initial Delay
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Key Repeat Rate
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Wiper Message
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Clear Custom Status
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USB speed
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Exit Configuration Menu (model T656)
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Printer overview
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Printer theory
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Model T650 with duplex, paper path, rolls, and sensors
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Models T652 and T654 paper path rolls and sensors
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Functions of main components
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Media tray assembly
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Multi-purpose feeder (MPF)
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Supported paper sizes, types, and weights
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Registration
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Transfer
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Polygon printhead assembly
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Oscillating printhead assembly
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Fuser
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Fuser components
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Fuser unit assembly (type 1 and type 2)
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Exit
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Drive
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Electrical components and controller
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Control
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Printhead control
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Fuser control
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Xerographic and print cartridge components
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High Capacity Input Tray (HCIT) tray assembly
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250-sheet/550-sheet tray assembly
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Model T650 paper path, rolls, and sensors
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Models T652 and T654 paper path, rolls, and sensors
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Media tray assembly
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Duplex
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Model T650 duplex paper path
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Models T652 and T654 duplex paper path
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Understanding jam numbers and locations
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200 and 201 paper jams
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202 and 203 paper jams
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230 paper jam
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231-239 paper jams (optional external duplex unit)
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241–245 paper jams
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250 paper jam
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260 paper jam
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271–279 paper jams
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280 paper jam
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281 paper jam
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282 paper jam
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283 staple jam
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Security Reset Jumper
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Security Reset Jumper
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4. Repair Information
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Handling ESD-sensitive parts
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Adjustments
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Polygon and Oscillating printhead mechanical registration adjustment
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Oscillating printhead assembly electronic adjustment
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Alignment assembly adjustment
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Fuser solenoid adjustment
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Gap adjustment
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Removals
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Replacement note: To replace a removed part, reverse the order of removal unless noted otherwise.
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Access door removal (T650, T652, T654)
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Alignment assembly removal (T650, T652, T654)
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Connection access cover, rear removal (T650, T652, T654)
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Connection bezel assembly, rear removal (T650)
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Connection bezel assembly, rear removal (T652, T654)
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Cover assembly, rear lower removal (T650)
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Cover assembly, rear lower (T652, T654)
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Charge roll assembly removal (T650, T652, T654)
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Door assembly, rear removal (T650, T652, T654)
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Duplex guide assembly, rear removal (T652, T654)
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Duplex assembly removal (T652, T654)
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Duplex cooling fan removal (T652, T654)
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Duplex drive motor assembly removal (T652, T654)
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Duplex input sensor assembly removal (T652, T654)
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Duplex guide assembly, front removal (T652, T654)
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Fuser access door assembly removal (T650, T652, T654)
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Fuser drive release linkage removal (T650, T652, T654)
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Fuser unit assembly removal (T650, T652, T654)
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Fuser wiper cover assembly removal (T650, T652, T654)
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HVPS card assembly removal (T650, T652, T654)
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Inner deflector removal (T650, T652, T654)
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Laser cover removal (T650, T652, T654)
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LCD screen bezel removal (T650, T652, T654)
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LVPS card assembly removal (T650)
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LVPS card assembly removal (T652, T654)
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Main cooling fan removal (T650, T652, T654)
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Main drive motor assembly removal (T650, T652, T654)
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Media out actuator removal (T650, T652, T654)
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Media support removal (T650, T652, T654)
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Media turn guide removal (T650, T652, T654)
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MPF cam gear removal (T650, T652, T654)
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MPF lift plate assembly removal (T650, T652, T654)
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MPF media out actuator removal (T650, T652, T654)
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MPF pick roll assembly removal (T650, T652, T654)
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MPF pick solenoid assembly removal (T650, T652, T654)
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MPF tray door assembly removal (T650, T652, T654)
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Operator panel latch assembly removal (T650, T652, T654)
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Operator panel door assembly removal (T650, T652, T654)
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Operator panel hinge assembly, left removal (T650, T652, T654)
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Operator panel hinge assembly, right removal (T650, T652, T654)
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Operator panel door assembly removal (models X651, X652, X654, and X656)
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Operator panel cover latch assembly removal (models X651, X652, X654, and X656)
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Option drive shaft removal (T650, T652, T654)
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Output cover assembly removal (T650, T652, T654)
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Pick arm assembly removal (T650, T652, T654)
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Pick roll assembly removal (T650, T652, T654)
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Print cartridge cooling fan removal (T650, T652, T654)
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Print cartridge clamp assembly removal (T650, T652, T654)
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Print cartridge ID connector assembly removal (T650, T652, T654)
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Printhead assembly removal (T650)
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Printhead assembly removal (T652, T654)
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Redrive assembly removal (T650, T652, T654)
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Redrive motor assembly removal (T652, T654)
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Side cover, left removal (T650)
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Side cover, left removal (T652 and T654)
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Side cover, right removal (T650)
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Side cover, right removal (T652, T654)
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Sensor (duplex input) removal (T652, T654)
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Sensor (media level) removal (T650, T652, T654)
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Sensor (media out) removal (T650, T652, T654)
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Sensor (toner empty) removal (T650, T652, T654)
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Sensor (input) removal (T650, T652, T654)
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Sensor shield assembly removal (T650, T652, T654)
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Sensor (standard bin exit) removal (T650, T652, T654)
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Sensor (toner density) removal (T650, T652, T654)
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Standard bin actuator assembly removal (T650, T652, T654)
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Switch (media size) assembly removal (T650, T652, T654)
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System card assembly removal (T650, T652, T654, T656)
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Transfer roll assembly removal (T650, T652, T654)
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Transfer roll bracket assembly, left removal (T650, T652, T654)
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Transfer roll bracket assembly, right removal (T650, T652, T654)
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Transfer deflector removal (T650, T652, T654)
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Tray roller catch assembly removal (T650, T652, T654)
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Option removals
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5-bin mailbox rear door assembly removal
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5-bin mailbox left outer cover removal
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5-bin mailbox left inner cover removal
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5-bin mailbox right outer cover removal
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5-bin mailbox right inner cover removal
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5-bin mailbox top cover removal
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5-bin mailbox media bin full actuator removal
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5-bin mailbox sensor (pass through) removal
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5-bin mailbox sensor (media bin empty) removal
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5-bin mailbox controller card assembly removal
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5-bin mailbox static brush mylar assembly removal
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5-bin mailbox media bin fifth deflector removal
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5-bin mailbox media bin first through fourth deflector removal
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5-bin mailbox media bin extension assembly removal
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5-bin mailbox deflector gate solenoid removal
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5-bin mailbox transport solenoid removal
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5-bin mailbox sensor (deflector gate HP) removal
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250-sheet option tray assembly
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250-sheet media tray assembly removal
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250-sheet pick arm bracket assembly removal
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250-sheet media out actuator removal
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250-sheet frame assembly removal
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250-sheet controller card assembly removal
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550-sheet option tray assembly
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550-sheet media tray assembly removal
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550-sheet pick arm bracket assembly removal
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550-sheet bellcrank recoil spring removal
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550-sheet frame assembly removal
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550-sheet controller card assembly removal
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550-sheet option drive shaft with spring removal
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Anti-tip latch assembly removal
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High capacity input tray (HCIT)
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High capacity input tray (HCIT) media tray assembly removal
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High capacity input tray (HCIT) tray cover, front removal
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High capacity input tray (HCIT) cover, rear removal
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High capacity input tray (HCIT) cover, right removal
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High capacity input tray (HCIT) cover, left removal
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High capacity input tray (HCIT) anti-tip latch assembly removal
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High capacity input tray (HCIT) drawer slide assembly removal
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High capacity input tray (HCIT) tray lift drive motor assembly removal
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High capacity input tray (HCIT) controller card assembly removal
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High capacity input tray (HCIT) media size actuator assembly removal
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High capacity input tray (HCIT) pick arm bracket assembly removal
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High capacity input tray (HCIT) tray closed latch with spring removal
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High capacity stacker rear door assembly removal
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High capacity stacker right cover removal
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High capacity stacker left cover removal
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High capacity stacker media output bin assembly removal
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High capacity stacker controller card cover panel removal
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High capacity stacker switch (media bin HP) removal
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High capacity stacker sensor (media bin full) assembly removal
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High capacity stacker sensor (media bin full) bracket assembly removal
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High capacity stacker controller card assembly (upper and lower) removal
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High capacity stacker right frame removal
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High capacity stacker left frame removal
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High capacity stacker upper deflector gate removal
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High capacity stacker sensor (pass through) removal
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High capacity stacker left mounting bracket removal
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High capacity stacker sensor (deflector gate HP) removal
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Installing / Removing the RFID UHF option
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Lower interface cable assembly removal
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Media size actuator removal
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Media tray catch spring removal
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Media out actuator removal (models T652 and T654)
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Media size actuator removal
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Media tray catch spring removal
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Media tray roller catch assembly removal
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Output expander rear door assembly removal
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Output expander left outer cover removal
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Output expander left inner cover removal
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Output expander right outer cover removal
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Output expander right inner cover removal
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Output expander media bin latch (left and right) removal
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Output expander media output bin assembly removal
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Output expander media bin full actuator removal
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Output expander sensors (media bin full) assembly removal
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Output expander sensor (media bin full) bracket assembly removal
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Output expander controller card cover panel removal
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Output expander controller card removal
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Output expander sensor (pass through) removal
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Output expander deflector gate removal
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Output expander sensor (deflector gate HP) removal
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SFP stapler assembly rear door assembly removal
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SFP stapler assembly right cover removal
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SFP stapler assembly left cover removal
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SFP stapler assembly top cover removal
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SFP stapler assembly handle cover removal
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SFP stapler assembly LED sensor cover removal
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SFP stapler assembly sensor (finisher bin media present) removal
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SFP stapler assembly standard output bin LED and LED clear lens removal
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SFP stapler assembly tamper drive belt removal
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SFP stapler assembly tamper drive motor assembly removal
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SFP stapler assembly media stack flap and media stack flap actuator removal
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SFP stapler assembly stapler unit assembly removal
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SFP stapler assembly paddle drive motor assembly removal
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SFP stapler assembly sensor (media stack) removal
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SFP stapler assembly sensor (paddle HP) removal
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SFP stapler assembly sensor (stapler access door interlock) removal
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SFP stapler assembly sensor (tamper HP left and right) removal
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SFP stapler assembly sensor (bin full send) removal
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SFP stapler assembly sensor (bin full receive) removal
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SFP stapler assembly sensor (media in stapler) removal
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SFP stapler assembly sensor (deflector HP) removal
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Stapler/stacker controller card assembly removal
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Sensor (HCIT tray raised HP) with cable assembly removal
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Sensor (HCIT pass through) with cable removal
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Sensor (pass through) with cable removal
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Sensor (pass through) with cable removal
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Tray roller catch assembly removal
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Tray roller catch assembly removal
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Upper interface cable assembly removal
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5. Connector locations and connections
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Connections
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6. Preventive maintenance
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Safety inspection guide
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Lubrication specifications
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Individual maintenance part expected life
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Scheduled maintenance
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Maintenance kit
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7. Parts catalog
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How to use this parts catalog
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Assembly 1: Covers
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Assembly 2: T650, T652, and T654 Operator panel
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Assembly 3: T656dne Operator panel, MPF and smart card
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Assembly 4: Drive motor assemblies and duplex
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Assembly 5: Media path and ducts
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Assembly 6: Printhead, charge, and transfer
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Assembly 7: Pick arm assembly, trays, and MPF
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Assembly 8: LVPS, fuser and electrical cables 1
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Assembly 9: HVPS, system card, and electrical cables 2
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Assembly 10: 250 Sheet option tray assembly
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Assembly 11: 550 Sheet option tray assembly
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Assembly 12: HCIT Sheet option tray assembly
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Assembly 13: SFP stapler assembly #1
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Assembly 14: SFP stapler assembly #2
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Assembly 15: SFP stapler assembly #3
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Assembly 16: SFP stapler assembly #4
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Assembly 17: 5-bin mailbox #1
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Assembly 18: 5-bin mailbox #2io
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Assembly 19: High capacity stacker
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Assembly 20: Output expander
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Assembly 21: Envelope feeder and external duplex
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Assembly 22: RFID UHF Option assembly
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Assembly 23: Miscellaneous
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Assembly 24: Power cords
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Assembly 25: Universal trays and accessories
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Index
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Part number index
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Print defects guide
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Wiring diagrams
Page 1 Text Content
Edition: September 17, 2009
Lexmark™ T650, T650n, T652dn, T654dn & T656dne Printer
4062-XXX
Table of contents
Start diagnostics
Safety and notices
Trademarks
Index
Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page Summary Contents For Lexmark T650/T650N/T652DN/T654DN/T656DNE User Guide
Manual Details
| Brand | Lexmark |
|---|---|
| Pages | 13 |
| File Size | 720.98 KB |
| Published | May 30, 2026 |
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Frequently Asked Questions
What physical information is provided regarding the product?
The manual provides model names (Lexmark T650, T650n, etc.), part numbers (P/N 12G98244062-XXX), and revision dates (September 17, 2009).
How can I send comments or questions about the product?
Comments can be addressed to Lexmark International via Department D22X/002-1 in Lexington, Kentucky, or by e-mail at [email protected].
What types of paper does this machine support?
The manual details supported options for various internal components but references a section on 'Supported paper sizes, types, and weights' (Section 1-4).
Is there a safety notice I should review?
Yes, the manual includes sections titled 'Notices and safety information,' along with specific warnings for lasers and lithium batteries.