The following table gives the components available for callout on the Models 870 and 890. It matches
those components with the FRU containing the component. The other columns give location information,
CCIN information, a link to a remove and replace procedure, and additional information.
Table 1. FRU locations and failing components for Models 870 and 890 processor tower
Possible failing
component
FRU name Position Type or CCIN
number (see the
Type, model, and
part number list)
Remove and
replace
procedure
Additional
comments
v Card enclosure
or backplane
v System unit
backplane
System unit
backplane
MB1 25C0 (See page
524)
Go to Models 870
and 890 - System
unit backplane
MB1.
288 Hardware (Remove and Replace; Part Locations and Listings)
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