Canon BJC-8500 Service Manual

Also see for BJC-8500: User manual

Contents

3.4 Precautions for Disassembly/Assembly3.4.1 Disassembly prohibited partsNever loosen the red screws on the printer's mechanical sections.Two red screws are used for fixing the adjustment plate. This plate determines thedistance between the nozzles on the BJ cartridge and the platen. This distance iscalled the "head gap." Ten red screws are used for fixing the carriage rail and chassis.These screws are adjusted to their optimum positions before the printer is shippedfrom the factory, and cannot be re-adjusted.Also, do not disassemble BJ cartridges and ink tanks.Do not disassemble parts on the printer down to components smaller thanthose indicated in the exploded views in the Parts Catalog. Doing so mightimpair their original functions after they are re-assembled.3.4.2 Precautions for disassembly/assemblyBefore you start disassembly/assembly, be sure to read"Part 5: 4. Disassembly/Assembly"(page 5-6) for details on parts that require special caution during disassembly/assembly.The printer comprises combining many plastic parts. When disassembling theprinter, be careful not to break or bend these plastic hooks.Some of the plastic parts contain glass fibers for improving the strength ofthe part. However, since their viscosity is low, plastic hooks break easily.Do not apply excessive force when releasing a hook.Part 1: Safety and Precautions BJC-85001-16Figure 1-18 Disassembly Prohibited PartsFigure 1-19 How to Release Plastic HooksRed ScrewsRed ScrewsRed ScrewBJ CartridgeInk TanksInk TanksRed ScrewsRed ScrewsRed ScrewCarriage RailHookNever apply excessive forcewhen releasing a hook.