Service manual

GS80 Component Removal and Replacement 6-3
Figure 6–1 shows the location and color codes of modules that plug into the GS80
backplane. There is no global port module, since the functions are designed into
the backplane.
The I/O riser consists of a module that plugs into the backplane and a transition
card that plugs into the riser. The transition card is used to bring the I/O signals
to the drawer’s bulkhead where the I/O hoses are attached.
Table 6–1 lists modules in the drawer and their associated color codes. The color
codes are on both the modules and on the mid-rail card guide in the drawer.
There is one exception, the color code for the PSM is on the rear card guide rather
than the mid-rail card guide.
Note that when installing modules, the color code on the module faces the color
code on the card guides.
Table 6– 1 Module Color Codes (GS80)
Color Code Module
Yellow Main power
Red Auxiliary power
Orange Power system manager
Blue CPU
Gray Memory
White Directory
Green Clock splitter
Light blue Local I/O riser