1999 Canon GP405/335 Service Manual 682 Pages

Technical reference for Canon GP405/335 copier systems covering diagnostics, repair procedures, and maintenance specifications. Complete documentation for service technicians with detailed assembly instructions.

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Document Details

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Document Number / Seller:
23860 / Steven Peterson
File Size:
12.99 MB
File Type:
PDF
Language:
English
Pages:
682
Printable:
Yes
Category:
Copier
Last updated / verified
Jul 6, 2025

Models Covered & Key Technical Specifications

Canon GP405/335 — 1999 Analytical Compendium | GP405/335 Series Segment.

  • Engineered Deviation Limits: 40 copies per minute is specified as the maximum rated copying speed for the GP405 model Architecture.
  • Calibrated Energy Draw: For optimal performance, 910 W represents the active power consumption during the copying operation Baseline.
  • Standard Environmental Range: The operational envelope spans 7.5–32.5°C (45–91°F) to ensure stable machine operation Requirements.
  • Prescribed Rotation Data: 1200–equivalent × 600 dots per inch — indicates the effective print resolution achieved by smoothing Threshold.
  • Nominal Native Resolution: The image sensor delivers 600 × 600 dpi for read-in operations to support quality image capture Mapping.
  • Verified Fit Tolerances: Maximum copy paper reaches 3500 sheets of 80 g/m² when the Paper Deck-B1 accessory supports storage Configuration.

Professional Workshop Service Manual & Technical Specifications

Reference-Grade Shop Assembly Manual: Copier Comprehensive Diagnostics: Canon GP405/335 (1999) Library-Master

Year-Coverage: Canon GP405/335 (1999) // Operational-Scope: Copier system specifications and component logic // Procedure-Type: Service documentation and technical reference.

Specification System-Path Architecture
695 pages, comprehensive technical documentation Exposure, Image Formation, Laser Systems Complete subsystem architecture documented
Copying Speed: 40/33 cpm Fixing, Pick-Up/Feeding, Installation procedures Modular component integration
Image Memory: 32-96 MB expansion Paper Deck operation, maintenance scheduling Electrical control and mechanical systems

The manual presents information on General Description (features, specifications, component naming), Basic Operation (functional construction, electrical circuitry, operational sequences), and Exposure System documentation (scanner drive mechanisms, lamp control, original size identification). Disassembly and assembly procedures reference the CCD unit, IP PCB, and ROM DIMM replacement protocols. Image Formation System chapters document analog and digital image processing methodologies, density correction curves, binary processing techniques for text and photo modes, and image memory allocation structures. The documentation includes Laser Exposure System architecture, BD signal generation, laser driver PCB functions, and laser scanner motor control timing sequences.

Suspension service documentation covers high-voltage transformer circuits, primary charging roller bias correction, transfer charging roller voltage management, and separation static eliminator control mechanisms. Disassembly instructions are documented for developing assembly components, toner level detection methodology, and drum cleaner operation with waste toner sensor activation logic. Wear limits are specified for paper-handling components, including pickup roller assemblies, feeding mechanisms, registration systems, and delivery path configurations across the pick-up/feeding system architecture.

System operation descriptions cover fixing assembly temperature control (main and sub thermistor monitoring, constant voltage regulation), protective mechanisms with thermal switch integration, and upper fixing roller bias application procedures. The documentation addresses paper deck operations including lifter motor control, deck paper supply positioning, jam detection across nine sensor points, and motor speed switching protocols for deck main motor and deck lifter motor functions.

Maintenance information covers periodically replaced parts listings, consumables and durables schedules (including cleaning belt life expectancy documentation), scheduled servicing charts spanning copier and paper deck maintenance intervals, and troubleshooting procedures for image faults, malfunction codes, feeding problems, and jam history tracking. The manual documents torque specifications for drum cartridge assembly, primary charging roller cleaning solenoid positioning, and fixing roller pressure adjustment to ensure proper mechanical preload accuracy.

FAQ

Determine the **specific** torque requirements for the primary charging roller? keyboard_arrow_down

801V is the standard DC bias for primary charging under normal temperature conditions. The charging mechanism operates with AC bias at 2180 µA for optimal performance across varying humidity levels.

What specifications apply to the **designated** paper sizes the machine accepts? keyboard_arrow_down

297 x 420 mm maximum for A3 original size. The machine supports cassette feeding from A5 (148 x 210 mm) through A3 (297 x 420 mm), with multifeeder capability extending to postcard sizes (140 x 216 mm minimum).

Check the **critical** lubrication requirements for mechanical assemblies. keyboard_arrow_down

Heat-resisting grease (CK-0427) must be applied to gear engagement points on flat teeth surfaces. Standard machine oil lubricant is used for gear edge engagement. Fixing roller and bearing surfaces require heat-resisting grease application to prevent material caking during continuous operation.

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Reviews (2)

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Rated 4 out of 5 stars
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The Canon GP405/335 Service Manual is incredibly detailed and easy to follow. I appreciated the clear operational guidelines and troubleshooting sections. The download process was seamless, and I received a quick response to my queries! Highly recommend it!