Outline - Canon imageRUNNER ADVANCE 4551i Service Manual

Outline

This chapter describes disassembly and reassembly procedures of the printer.
The service technician is to identify the cause of printer failures according to follow the disassembly procedures of each part to
replace the defective parts or the consumable parts.
Note the following precautions when working on the printer.
• Before disassembling or reassembling the printer, be sure to disconnect its power cord from the electrical outlet.
• When having removed the Drum Unit from the host machine before disassembling and assembling the machine, be sure to
put the Photosensitive Drum in a protective bag even in a short period of time to prevent the adverse effect of light.
• Reassembling procedures are followed by the reverse of disassembly unless otherwise specified.
• Note the length, diameters, and locations of screws as you remove them. When reassembling the printer, be sure to use
them in their original locations.
• Do not run the printer with any parts removed as a general rule.
• Ground yourself by touching the metal part of the printer before handling the PCB to reduce the possibility of damage caused
by static electricity.
• When you replace the part that the rating plate or the product code label is attached, be sure to remove the rating plate or
the product code label and put it to the new part.
149
4. Disassembly/Assembly