Canon i550, Parts Catalog

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II
II.
ABOUT THIS MANUAL
A. PARTS LAYOUT & PARTS LIST
Parts layout illustration
a) Parts search
Find a part from the parts layout
illustration and find its key number
from the parts list to identify the part
number and name. For screws, nuts,
washers, lock washers, pins, spacers,
see SCREWS &
WASHERS LIST.
Note:
If parts have the same or similar
shape but different specifications,
their key number is assigned to
several part numbers and names
in the parts list.
b) Parts replacement procedure
To replace parts, the parts layout illus-
trations have figure numbers according
to the disassembly procedure of the
product. The parts that require careful
work are shown the illustration.
Parts list
a) FIGURE & KEY No.
The FIGURE & KEY No. column
corresponds to the key numbers
assigned to the parts in the parts
layout illustration.
It also corresponds to the part locations
printed on the PC board.
b) PART NUMBER
The PART NUMBER column gives the
part numbers corresponding to the key
numbers. To order a part, indicate the
part number clearly.
Note:
Parts marked NPN are not service
parts.
c) RANK
The service parts with N in the RANK
column are order parts.
d) QTY
The QTY column gives the number of
parts in the corresponding components
layout illustration.
e) DESCRIPTION
The DESCRIPTION column gives the
part names in English.
To order a part, indicate the part name,
too.
Options & Consumables
These are illustrations and a list of
units that can be used as optional
consumable equipments.
Tool List
This is a list of tools used for servicing
products.
B. SCREWS & WASHERS LIST
This is a list of screws, nuts, washers,
lock washers, pins, and spacers.
The QTY column does not give the num-
ber of parts used.
C. NUMERICAL INDEX
All the parts listed in this parts catalog
are arranged in order of part number.
You can identify part locations and
names from the NUMERICAL INDEX.