Canon CXDI-31, Service Manual

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B. Part No. Column
A part number marking is as follows :
General Parts
Size number
Part number
Revision number
Characteristic number
Sorting number
Standard Parts (Screws, washers, resistors, capacitors, etc.) of Standard Specification
0 0 0
Supplementary number
Part number
Revision number
Sorting number
Size number: This number is used to classify adjustment parts by size.
The marking is 000 for parts which need not be classified by size.
Revision Number: This number is used to distinguish new parts from old ones.
The number advances when they cease to be interchangeable due to
modification.
Supplementary number: This is simply used to ensure the general and standard part number of
the same length. The marking is always 000.
Standard number: This is used to indicate screw diameters, resistance values, etc.
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