Canon Pixma MP600 / MP600R Service Manual (P/N QM3-0250-000)

This 79-page Canon factory technical set for the PIXMA MP600 and MP600R combines the 71-page Service Manual with the separate 8-page Parts Catalog; both carry Canon U.S.A. copyright 2006. It is written for bench diagnosis, repair adjustment, post-repair verification, and correct component identification rather than routine user operation. The service manual is organized into Maintenance, Technical Reference, and Appendix sections, while the parts catalog supplies the exploded assembly graphics Canon directs technicians to use during disassembly and reassembly.

• Covers operator-call errors, service-call errors, LCD messages, warnings, and symptom-based troubleshooting for the carriage, line-feed system, purge unit, paper feed, scanner, print head, ink system, logic board, and print-quality faults.
• Details service-mode work for EEPROM initialization, destination programming, ink-absorber counter reset and transfer, LF/eject correction, duplex and cassette left-margin correction, deep cleaning, and button/LCD/Easy-Scroll Wheel testing.
• Provides targeted repair notes for external covers and scanner removal, operation-panel and LCD removal, document-pressure-sheet installation, printer-unit separation, carriage unlocking, harness routing, paper-feed motor positioning, grease application, and transportation after repair.
• Explains the service test print and EEPROM information print, including error history, absorber data, purge counts, page counts, alignment records, temperature data, scanner history, and copy/scan usage.
• Includes 13 exploded parts figures covering the print head, AC adapter, external covers, scanner, operation panel, card board, bottom case and absorber, logic board, sheet feeder, carriage, platen, purge unit, and paper-feed/carriage-lift mechanism.
• Distinguishes MP600 and MP600R hardware through model-specific logic boards, NIC components, side cover, LCD case, bottom case, encoder harness, and sheet-feeder assemblies.

Maintenance, Diagnostics, and Repair Procedures

The error section does more than define LCD messages. Its service-call matrix links blink cycles and fault codes to operating conditions, likely failed assemblies, and Canon part numbers. Examples include 5100 carriage-encoder faults, 6000 line-feed encoder faults, 5C00 purge-cam faults, B200 VH-monitor faults, 6010 paper-eject encoder faults, and 5010 scanner home-position faults. A separate symptom matrix covers no-power conditions, abnormal noise, blank or partial LCD display, multi-feeding, skewed feed, carriage interference, scanning failure, missing colors, streaking, smearing, incorrect image scale, and other print-quality complaints.

Replacement notes show which follow-up work is required after changing the logic board, ink absorber, carriage unit, paper-feed motor, platen, PR lift shaft, encoder films, or print head. The related repair coverage includes EEPROM setup, ink-system checks, print-head alignment, motor and belt positioning, grease points, service-test evaluation, and final operation checks. The listed service material is FLOIL KG-107A, tool number QY9-0057-000, for specified carriage-shaft, lift-cam, and gear sliding surfaces.

Destination programming covers Japan, Korea, U.S./Canada/Latin America, Europe, Australia, Asia, China, and Taiwan, including regional CD/DVD-print enablement. Canon also states that no scheduled maintenance, periodic service-engineer replacement parts, or service-engineer consumables are specified; the maintenance content centers on adjustment after parts replacement and fault-driven repair.

Technical Reference and Specification Coverage

Part 2 explains the Easy-Scroll Wheel, double-encoder print system, remaining-ink detection logic, and the conditions that trigger arrival, timer, dot-count, tank-replacement, manual, and deep-cleaning cycles. Print-mode tables map media type, quality setting, resolution, pass count, print direction, and ink selection for normal color, grayscale, borderless, duplex, camera-direct, and copy operation.

The model-specific FAQ addresses round-trip postcard skew or jams in low-temperature/low-humidity conditions, back-side soiling after borderless or automatic duplex printing, paper scratching through the cassette or duplex path, ink-mist contamination of ASF sub-rollers, and skew with curled SG-101 media. Each entry ties the complaint to its operating condition, mechanical cause, and recommended repair response.

Specification tables cover the machine, CIS scanner, copier, memory-card and PictBridge printing, IrDA/Bluetooth options, print head, regional ink tanks, and supported media. Key reference values include 9,600 x 2,400 dpi maximum print resolution, 2,400 x 4,800 dpi optical scan resolution, approximately 150-sheet ASF and cassette capacities with the specified plain paper, and a 41°F to 95°F operating range.

Parts Catalog, Model Differences, and Scope

The parts catalog identifies QM3-0250-000 as the MP600 logic board assembly and QM3-0275-000 as the MP600R logic board assembly. MP600R-specific listings also include the NIC board and harnesses, along with variant covers, cases, feed assemblies, and encoder wiring. The specifications distinguish Japanese-market ink tanks from the PGI-5BK/CLI-8 series used for other destinations and warn that the two groups are not interchangeable.

Important scope: the procedural chapters are MP600-focused, with MP600R-specific differentiation concentrated in the parts catalog rather than a separate network-diagnostics chapter. The table of contents names block-diagram and connector-location/pin-layout sections, but the included service PDF moves from the Part 3 divider directly to the specifications section; it is not a wiring-schematic package. Canon also states that the service manual alone does not provide sufficient full disassembly and reassembly coverage, which is why the separate exploded-view catalog matters.

Canon warns not to loosen the red carriage-shaft screws because their print-head positioning is not service-adjustable; only the paper-feed motor's red screws are released for motor replacement. Encoder films must remain free of grease, abrasion, and bending, while incorrect flexible-cable or harness routing can break conductors and create ignition or smoke risk. Disconnect AC power and observe the specified capacitor-discharge interval before logic-board removal.