Preface - Canon EF-9 Service Manual

I. PREFACE
This chapter describes disassembly and reassembly procedures of the envelope feeder.
The service technician is to find the cause of malfunction according to Chapter 4 Trou-
bleshooting and to replace the defective parts following the procedures described in this chap-
ter.
Note the following precautions during disassembly or reassembly.
1. CAUTION: Disconnect the power cord of the printer from the electrical outlet and remove the
envelope feeder from the printer before servicing the envelope feeder.
2. Assembly is the reverse of disassembly unless otherwise specified.
3. Note the lengths, diameters, and locations of screws as you remove them. When reassem-
bling the envelope feeder, be sure to use them in their original locations.
4. Do not operate the envelope feeder with any parts removed.
5. 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