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IBM 2220 Nways 300 Service Manual page 213

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1
NONE
When this notation appears
in the Part Number column, it denotes
a part or group of parts that have not
been assigned a part number.
The part number of cards and boards is
not given because it is subject
to frequent changes.
2
this notation in the Units column
NR
denotes a part not recommended for
field replacement.
3
AR
this notation in the Units column
indicates that the quantity is as required.
4
SIMILAR ASSEMBLIES
more assemblies contain a majority
of identical parts, they are combined
in the same listing. Parts common
to assemblies are illustrated and
listed by one index number.
Asm-
Part
Number
Index
8-
NONE
-1
1501460
-2
6426882
-3
10170
1
-4
NONE
-5
6398770
-6
6398942
-6
6427178
-6
6427181
4
-6
6428182
-7
6398936
-8
1621197
5
6
If two or
Units
Description
REF
Final Assembly
1
Disk Drive ASM
5
1
Bracket
Screw, Slot Bind HD-6/32 X 0.250 LG
4
Power Attachment Cord
1
6
Modular Dummy
8
Overlay-English
1
Overlay-French
1
Overlay-Portuguese
1
2
Overlay-Spanich
1
Cover
NR
Screw, Pan HD-M4 X 6 LG
AR
3
Parts specific to one or the other
of the assemblies are listed
separately and identified either
in the description of the part, or
this notation in the Units column
REF
indicates that the listing of the assembly is
repeated and reference should be made to
its previous listing for the quantity
required.
the indentation of items
INDENTATION
in the Description column of the table below
shows the relationship between assemblies,
subassemblies and detail parts. For example:
Not dot
MAIN ASSEMBLY
One dot
Detail parts of main ASM
One dot
Assembly within main ASM
Two dots
Detail part of 1 dot ASM
Two dots
Assembly within 1 dot ASM
Three dots
Detail parts of 2 dot ASM
For detail breakdown See Assembly 9

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