Canon PC720 Service Manual - Page 3

Introduction

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INTRODUCTION This Service Manual contains the basic facts and figures about the plain paper copier PC720/740/750/770, and is compiled to serve as a handy reference for servicing the machine in the field. This Service Manual consists of the following chapters: In CHAPTER 1, "GENERAL DESCRIPTION," a brief discussion of the copier's features, specifications, and an explanation of its operation are given. CHAPTER 2 "COPYING PROCESS" deals with the inner workings of the copier associated with the generation of copies. CHAPTER 3 "OPERATIONS AND TIMING" explains how the copier's electrical and mechanical systems are related to each other with respect to functions and timing of operations. In CHAPTER 4, "MECHANICAL SYSTEM," the copier's mechanical system is discussed as to its operation, disassembly, reassembly, and adjustment. CHAPTER 5 "INSTALLATION" gives step-by-step instructions for installing the copier together with checks to make for each step. CHAPTER 6 "MAINTENANCE AND SERVICING" contains tables of replacement parts and consumables. In addition to the above chapters, this Service Manual contains a set of appendixes consisting of a general timing chart and general circuit diagrams. A separate document entitled Service Handbook is also available for troubleshooting problems in the copier. -Note: The contents of this manual may be updated from time to time to reflect improvements rendered to the copier; a Service Information Bulletin will be issued as necessary to cover major changes. All service persons are expected to be thoroughly familiar with the information contained in this manual, Service Handbook, and Service Information Bulletins, for quick response to the user's needs. The PC720, PC740, PC750, and PC770 differ from each other for the following respects: Model PC720 PC740 PC750 PC770 Singlefeeding (manual)   - - Multifeeding (manual) -   Copying speed (cpm) 8 10 10 12 COPYRIGHT © 1994 CANON INC. CANON PC720174017501770 REV.0 AUG. 1994 PRINTED IN JAPAN omput AU JAPON)

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INTRODUCTION
This
Service
Manual
contains
the
basic
facts
and
figures
about
the
plain
paper
copier
PC720/740/750/770,
and
is
compiled
to
serve
as
a
handy
reference
for
servicing
the
machine
in
the
field.
This
Service
Manual
consists
of
the
following
chapters:
In
CHAPTER
1,
"GENERAL
DESCRIPTION,"
a
brief
discussion
of
the
copier's
features,
specifications,
and
an
explanation
of
its
operation
are
given.
CHAPTER
2
"COPYING
PROCESS"
deals
with
the
inner
workings
of
the
copier
associated
with
the
generation
of
copies.
CHAPTER
3
"OPERATIONS
AND
TIMING"
explains
how
the
copier's
electrical
and
mechanical
systems
are
related
to
each
other
with
respect
to
functions
and
timing
of
operations.
In
CHAPTER
4,
"MECHANICAL
SYSTEM,"
the
copier's
mechanical
system
is
discussed
as
to
its
operation,
disassembly,
reassembly,
and
adjustment.
CHAPTER
5
"INSTALLATION"
gives
step-by-step
instructions
for
installing
the
copier
together
with
checks
to
make
for
each
step.
CHAPTER
6
"MAINTENANCE
AND
SERVICING"
contains
tables
of
replacement
parts
and
consumables.
In
addition
to
the
above
chapters,
this
Service
Manual
contains
a
set
of
appendixes
consisting
of
a
general
timing
chart
and
general
circuit
diagrams.
A
separate
document
entitled
Service
Handbook
is
also
available
for
troubleshooting
problems
in
the
copier.
—Note:
The
contents
of
this
manual
may
be
updated
from
time
to
time
to
reflect
improvements
rendered
to
the
copier;
a
Service
Information
Bulletin
will
be
issued
as
necessary
to
cover
major
changes.
All
service
persons
are
expected
to
be
thoroughly
familiar
with
the
information
contained
in
this
manual,
Service
Handbook,
and
Service
Information
Bulletins,
for
quick
response
to
the
user's
needs.
The
PC720, PC740, PC750,
and
PC770
differ
from
each
other
for
the
following
respects:
Model
Singlefeeding
(manual)
Multifeeding
(manual)
Copying
speed
(cpm)
PC720
—
8
PC740
-
10
PC750
—
10
PC770
—
12
COPYRIGHT
©
1994
CANON
INC.
CANON
PC720174017501770
REV.0
AUG.
1994
PRINTED
IN
JAPAN
omput
AU
JAPON)