Procedure 9 - Removing And Replacing The Large Graphics Option Board; Procedure 10 - Removing And Replacing The Main Logic Board - Control Data Corporation CDC CC63X Hardware Maintenance Manual

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Procedure 9 - Removing and Replacing the Large Graphics Option
Board
The large graphics option board is mounted internally on the
logic drawer assembly (external connectors are exposed in the
back). .
Remove and replace the graphics option board as follows.
CAUTION
Make certain that battery is
installed before removing power from
terminal, and do not remove battery
when power is off. If battery is
not installed and power is removed,
the terminal operating parameters
will be forced to default values.
1. Remove logic drawer assembly (procedure 4, steps 1
through 5).
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2. Disconnect input/output ribbon cable(s) to the graphics
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option board. Note placement of cable connections for
reconnect ion later. The 20-pin ribbon cable connecting
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the main-logic and graphics boards has its red stripe
toward front of terminal when properly installed. Pull
up tab on upper card guide and slide out board to be
replaced.
3. Install replacement board and reconnect the cables.
4. Reassemble the terminal as specified in procedure 4,
steps 6 through 13.
Procedure 10 - Removi~9 and Replacing the Main Logic Board
Remove the main logic board as described in steps 1 through 7.
NOTE
Ensure that parameter information is
recorded or available from the user.
1. Remove logic drawer assembly (procedure 4, steps 1
through 5).
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