Appeal No. 2003-2076 Page 7
Application No. 09/428,364
secured thereto, at least one memory card, and at least one peripheral controller card.
Crane teaches (column 7, line 35, to column 8, line 37) that:
The PCBs are arranged vertically with the cable connections for externally
accessible cables (I/O cables) located at the back of card cage section 130
where they may be easily accessed by the user. A unique aspect of the design of
the card cage is that the function of the individual PCBs is depicted by a color
code. More particularly, each of the individual printed circuit cards is
manufactured in a different color material rather than adopting the traditional
method of making each card green. As an alternative to manufacturing each of
the cards in a different color material, or in addition to such manufacture, each of
the cards may have text printed on the card identifying the particular color
assigned to that card. The color code for each card is reflected in the user
documentation and also in one or more information labels attached within DTU
100 (e.g., within the card cage). The purpose of this is to clearly identify in an
unambiguous way the location of cards relative to their intended location. In this
manner, errors in service due to cards being inserted into wrong locations is, for
all practical purposes, eliminated.
An exemplary embodiment of the color code scheme of the present
invention will now be discussed with reference to FIG. 8. In the position depicted
in FIG. 8, DASD section 140 is pivoted open to provide access to a plurality (e.g.,
seven) of PCBs 132 housed within card cage section 130. The plurality of PCBs
132 may include, for example, a microprocessor board containing a
microprocessor, a memory board, and a peripheral controller board. It should be
understood that, although FIG. 8 shows seven PCBs, any number of PCBs may
be included in the computer system in accordance with the invention.
Each of the PCBs 132 may have a different color and/or text written
thereon identifying the color associated with that PCB. Additionally, a card color
code label 133 is provided in visual proximity with respect to PCBs 132 (for
example, inside the top of the card cage adjacent the cards). Label 133 identifies
a one-to-one correspondence between the slots of the card cage in which the
PCBs 132 reside and the colors associated with the PCBs. For example, label
133 may include a plurality of colored squares with the leftmost square being the
color assigned to the leftmost slot, the second leftmost square being the color
assigned to the second leftmost slot, and so on. The color of each card 132
matches the color of the slot in which it should reside. Thus, when a PCB 132
having a given color is to be replaced, either for repair or upgrade purposes, the
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