Introduction; Outline - Canon CLBR 460ps Service Manual

I. INTRODUCTION
A. Outline
This chapter describes disassembly and reassembly procedures of the printer.
The service technician is to find the factor of the failure according to the "Chapter 4 Trouble
shooting" and to follow the disassembly procedures in this chapter to replace the defective
part. Replacement of consumable parts is also to be conducted according to the procedures
described in this chapter.
Note the following precautions during disassembly or reassembly.
1. At disassembly, reassembly, or transportation of the printer, remove the drum cartridge,
toner cartridge, and ITB unit as necessary. When removing the drum cartridge and toner
cartridge, put them in a protective bag to prevent light from affecting them. Refer to "B.
Removal of the toner cartridge with manual operation" if the toner cartridge cannot be
removed with panel operation.
2. CAUTION: Before servicing the printer, disconnect its power cord from the electri-
cal outlet.
3. Assembly is the reverse of disassembly unless otherwise specified.
4. Note the lengths, diameters, and locations of screws as you remove them. When reassem-
bling the printer, be sure to use them in their original locations.
5. As a general rule, do not operate the printer with any parts removed.
6. Discharge electrical static from your body by touching the metal frame of the printer prior to
handling the PCB in order to avoid causing damage by the difference in static charge at that
time.
CHAPTER 3
3 - 1