Xerox WorkCentre Pro 423/428 2009 Service Manual

Technician-level documentation for Xerox WorkCentre Pro 423/428 series printers. Includes paper handling and control panel diagnostics. PN 499T00247

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Xerox Models Covered & Key Technical Specifications

Models: Xerox WorkCentre Pro 423, Xerox WorkCentre Pro 428
Sub-models / Variants: 423/428DC, 423/428DCD, 423/428CP, 423/428CPD, 423/428CPF, 423/428CPFD
Build Years: 2009
Technical Data:

  • Voltage: 115VAC or 220V/230VAC (region dependent)
  • Print speed: 25 ppm
  • Memory: 64 MB formatter board
  • DADF weight: 8.6 kg (18.6 lb)
  • IOT assembly weight: 46 kg (101 lb)
  • IIT assembly weight: 24 kg (53 lb)
  • Drum unit service interval: 24K prints
  • Feed roller service interval: 600K feeds (main trays), 90K feeds (DADF)
Technical Specifications
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Document Number / Seller:
27302 / Nancy Sanchez
File Size:
39.81 MB
File Type:
PDF
Language:
English
Pages:
676
Printable:
Yes
Category:
Printer
Last updated / verified
Jun 7, 2025

Xerox Manual Features & Content Preview

Xerox WorkCentre Pro 423/428 Technical Documentation

  • Covers 2009 Xerox WorkCentre Pro 423 and 428 multifunction series, including all digital copier, printer, and fax configurations with duplex capabilities
  • Official publication date March 2003, revised 03/03
  • Documents comprehensive service call procedures, diagnostic routines, and status code analysis for the entire machine family
  • Includes specific internal code lookup tables for system error diagnostics and fault analysis
  • Contains 40 detailed wiring data and block schematic diagrams for electrical troubleshooting
  • Laid out for standard letter and A4 printing
  • Indexed PDF search covers every chapter and appendix
  • This 676-page technical reference provides the essential maintenance and diagnostic data for the 423/428 device fleet, documenting complex system interactions not found in operator materials

System and Service Methodology

This publication organizes technical content into eight distinct segments, beginning with how factory workshop documentation is structured to facilitate efficient service calls. Sections span Service Call Procedures, Status Indicator RAPs, Image Quality RAPs, and specific Repairs/Adjustments for internal components. Subsequent chapters detail the spare parts list, general procedures, wiring data, and accessory configurations, ensuring that technicians can isolate and resolve malfunctions within the IOT, IIT, and finisher systems.

Technical Reference and Diagnostics

Diagnostic information covers electrical reference values for +3.3VDC, +5VDC, and +24VDC power rails, specifying thresholds like +22.0 to +25.7VDC for the 24V supply. The manual provides extensive coverage of status code responses, listing corrective actions for errors ranging from HDD failures to communication interruptions. Voltage for the 100V model is documented at 100VAC between LVPS J8-3 and J8-6. Proper registration sensor operation is vital, and the manual details diagnostic tests for feed-in and registration components. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This Xerox WorkCentre Pro 423/428 service manual serves as the primary technical reference for the entire 2009 machine line, documenting all system, electrical, and maintenance specifications required for professional support.

Document Reference: 03/03, WorkCentre Pro 423/428

Manual FAQ, Purchase & Download Details

Does this service manual include wiring data and information on internal machine components? keyboard_arrow_down

Document contains a dedicated section for wiring data that includes block schematic diagrams and plug or jack locations. It also includes comprehensive parts lists and detailed information for major assemblies like the fuser and document feeder.

What documentation date and edition markers are shown on the manual cover pages? keyboard_arrow_down

Manual displays a publication date code of 03/03 on the introduction pages, indicating the revision timeframe for this service reference.

Which specific Xerox machine models are covered by the technical content in this service publication? keyboard_arrow_down

Document provides technical coverage for the Xerox WorkCentre Pro 423 and 428 series models. It contains eight distinct sections focused on service procedures, status indicator analysis, and general product specifications. Users can reference these sections to find information relevant to those specific machine configurations.

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