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Installing an 80487SX in Qi 486SX
The 80486SX CPU module provides a co-processor
socket for an 80487SX. The socket can be configured to
accept either an 80486SX or an 80487SX. Normally, the
socket will be free, the 80486SX will be soldered directly
to the CPU module, and the socket will be configured for
an 80487SX.
It is possible however, that the 80486SX may be installed
in the socket. If so, the 80486SX will have to be removed
and the socket reconfigured before the 80487SX can be
installed.
Identifying the 80487SX socket
1. Take suitable anti-static precautions as described
in your Owner's Handbook .
2. Obtain access to the system board as described in
your Owner's Handbook .
3. Identify the tape drive mounting plate at the front
left of the system unit.
4. Remove the four screws that secure the plate and
lift it clear of the system unit.
Notes
1. If there is an adapter card fitted in slot 3 you
may find the removal of the mounting plate
easier if you first remove the adapter card.
2. If a tape drive is fitted it must be removed with
the mounting plate. See the instructions on
page 17.
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