Canon Pixma MP620 / MP620B Service Manual - Technical Documentation

Technical Scope for Canon Pixma MP620 and MP620B

• Built for owners and workshops servicing the 2008–2010 Canon Pixma MP620 and MP620B inkjet photo all-in-one printers
• Official Canon U.S.A. publication, including Service Manual dated 2008 and Parts Catalog dated 2009
• Contains 12 detailed exploded-view diagrams, 15 troubleshooting symptom tables, and a complete adjustment index for service-mode initialization
• Delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• This 44-page technical publication is the reference standard for the QM3-3716-000 cassette unit and related print engine service requirements

Component and Service Walkthrough

The Canon Pixma MP620 and MP620B service documentation details the maintenance, error reporting, and disassembly logic for this series. Content begins with a structured maintenance section, defining service-level adjustments for the logic board, ink absorber, and carriage unit. The document provides critical data for error interpretation, mapping blinking LED codes to specific system failures, including carriage errors, line feed issues, and ink sensor faults.

Repair sections detail the disassembly process for the external housing, scanner unit, operation panel, logic board, and ink purge drive system. Addendums provide updated instructions for print unit removal and logic board support plate management. The publication concludes with verification procedures for confirming print engine performance post-service, including test pattern generation and EEPROM information reporting, while understanding parts documentation for vintage Canon printers aids in identifying specific component part numbers.

Specification and Reference Values

Technical specifications document the operational parameters for the Canon Pixma MP620, including a maximum print speed of 25 ppm and a 1200 dpi resolution threshold. Maintenance data lists the correct grease application (FLOIL KG-107A) for the carriage rail and APP code wheel gear shaft surfaces. Reference threshold values for ink absorber counters are documented at 10% increments for EEPROM setting calibration.

Specific voltage and electrical values are listed for the AC adapter (100V-240V 50/60HZ). Capacitor discharge wait time after power cord removal is specified at approximately 1 minute to prevent logic board damage. The logic board assembly requires 64 MB of buffer capacity during standard operation. An official 44-page Canon OEM technical manual covering the 2008–2010 Canon Pixma MP620 and MP620B, documenting mechanical assembly, electrical error codes, and factory-standard adjustment procedures for the inkjet printer unit.