Data General AViiON 4600 Series, Customer Documentation

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CPU, I/O Expansion, and Graphics Boards
9-4
014–002091
System board
Interboard connectors
First CPU complex board
Second CPU complex board
Figure 9-5 Separating the Interboard Connectors
3. Pull the CPU complex board away from the board beneath it, and place it in an
antistatic bag.
If you are replacingthe CPU complex board, insert it in an antistatic bagand return it
to Data General. Contact the Customer Support Center, as described in the Preface,
for information on returningthe faulty part.
If you removed the CPU complex board temporarily to replace the system board, put
the board inside an antistatic baguntil you are ready to reinstall it, and go to
Chapter 10, Replacingthe System Board." Otherwise, continue to the next section,
SpecifyingCPU Configurations," before installing the new CPU complex board.
Specifying CPU Configurations
Your system uses jumpers on the system board and CPU complex board(s) to specify
the number of central processingunits and cache memory management units in the
system. Before you install a new CPU complex board, you must make certain that
these jumpers correctly reflect the number and type of CPU complex boards in your
system.
Follow the steps below to examine and reinstall the CPU configuration jumpers on
your system board and CPU designator jumpers on your CPU complex board(s). If you
are replacinga CPU complex board, you can skip step 1 and continue with step 2.
1. Verify, and if necessary reset, the CPU configuration jumpers on your system
board as indicated in Figure 9Ć6.