Canon imageRUNNER ADVANCE C5051, C5045, C5035, C5030 series 2008 Service Manual (P/N C8049A)

• Coverage and document identity: Covers the Canon imageRUNNER ADVANCE C5051, C5045, C5035, and C5030 series in an official Canon Revision 0 service publication dated September 24, 2009, supplied as a 1,131-page PDF.
• Image-formation repair: Documents removal and installation of the twin laser scanner units, process and drum units, developing assemblies, ITB and cleaning blade, primary and secondary transfer rollers, patch sensor, and related initialization work.
• Fixing and paper-path work: Details fixing-assembly, film-unit, and pressure-roller service; guide and sensor cleaning; duplex and delivery-unit repair; cassette and multipurpose-tray roller replacement; and reader/ADF alignment.
• Diagnostic workflow: Provides factory test-print patterns for gradation, fogging, line defects, uneven density, transfer faults, right-angle accuracy, and color displacement, backed by error, jam, and alarm code tables plus service-mode I/O checks.
• Controller and system service: Covers main controller PCB and HDD replacement, data backup and restoration, HDD formatting, system-software loading with SST or USB memory, MEAP/SMS administration, Embedded RDS, networking, HDD mirroring, and removable-HDD configurations.
• Workshop references: Includes the Cross Sectional View, Roller Layout Drawing, Sensor/Switch Layout Drawing, Load Driving Drawing, full-color and black General Timing Charts, and a 16-sheet General Circuit Diagram, along with Canon special-tool numbers.

Written by Canon for qualified service personnel, this factory manual suits technicians who already understand copier repair, electrical testing, and service-mode work. It is not an operator's guide. Because coverage spans all sales localities, some configuration and option notes may not apply to every machine.

System Functionality and Workshop Diagnostics

The theory chapters trace the power-on sequence and the mechanical/electrical interaction among the main controller, laser exposure system, image-formation assemblies, fixing system, and pickup/feed path. Laser coverage addresses APC, horizontal and vertical scanning synchronization, BD correction, shutter control, and image-tilt correction. The image-formation material explains pre-exposure, primary charging, ACR developer control, drum monitoring, primary and secondary transfer, ITB displacement correction, and toner-supply and waste-toner control.

Image stabilization is treated as a coordinated system rather than a single adjustment. The manual explains D-max, PASCAL, D-half, ARCDAT, color-displacement correction, ATR, and ATVC controls, then connects them to sensors, service modes, and fault codes. Test prints help separate engine-side defects from reader or PDL-input problems and tie visible symptoms to the laser, drum, developing, transfer, ITB, and fixing sections. Code entries provide detection conditions, likely causes, repair paths, and relevant service-mode checks.

Technical Data and Operational Parameters

Model-specific tables distinguish the C5051/C5045 group from the C5035/C5030 group where process speed, developing-unit application, and drum-life criteria differ. Configuration material identifies supported reader arrangements, paper-handling devices, finishers, controller and storage options, and regional accessory combinations. Periodic-service tables connect replaceable parts and cleaning points with counters, inspection requirements, and post-replacement adjustments.

The Service Mode chapter covers COPIER, FEEDER, SORTER, and BOARD functions. Its DISPLAY, I/O, ADJUST, FUNCTION, OPTION, TEST, and COUNTER areas provide firmware and status information, live sensor and load checks, image-registration and density adjustments, component tests, cleaning routines, lifecycle counters, and backup-sensitive settings. The appendix identifies Digital Multimeter FY9-2002, Tester Extension Pins FY9-3038/FY9-3039, CA-7 Test Sheet FY9-9323, Tospearl 240 FY9-6007-000, and Mirror Positioning Tool FY9-3040-040.

Repair, Calibration, and Installation Scope

Replacement chapters pair disassembly with the post-repair work needed to return the machine to service. Controller and HDD sections cover settings backup, software reload, data restoration, and full gradation adjustment. Developing-assembly replacement requires color-specific initialization, patch-sensor service has separate initialization data, and ITB work calls for equilibrium-position detection.

The manual warns that Laser Scanner Unit 1 for Y/M and Unit 2 for C/Bk must return to their recorded positions; swapping them can alter Y reference skew and worsen color displacement, and the scanner assembly is not intended for disassembly. It also requires developing-assembly initialization before toner-container installation, because reversing that order prevents the correct toner-to-developer ratio from being established.

Installation coverage runs from unpacking and host setup through margin alignment, network checks, backup/export, and installation of the Printer Cover-C1, HDD and mirroring kits, heater kits, Utility Tray-A1, Key Switch Unit-A2, voice kits, Card Reader-C1, Copy Tray-J1, Inner 2-Way Tray-F1, additional memory, Expansion Bus-F1, IPSec Board-B2, and Wireless LAN Board-B1. Accessory coverage is selective: full mechanical repair centers on the host engine and reader/ADF assemblies, not complete teardown procedures for every listed finisher or paper-deck option.

Canon requires the machine to be powered down according to the specified procedure and unplugged before service. Laser-area, high-voltage, fixing, and controller repair should remain with properly qualified personnel.