Epson Equity LT-286e Product Support Bulletin - Page 14
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Equity LT - 286e Numeric Co - processor Information Change
Subject:
Date:
9/11/89
1 of 1
Page:
The final specifications for the Equity LT-286e have changed in one particular.
Initial documentation indicated that the Intel 80C287 - A - 12 CMOS - type numeric
co- processor (NPX) should be used.
turns out to be in error.
The 80C287 - A - 12 requires additional power and ground pin connections as
opposed to the NMOS version. This requires special connections to the socket
that were not part of the LT-286e design.
80C287 - A- 12 in a computer not meeting these new specifications can cause
damage to the NPX chip and/or the computer.
DO NOT ATTEMPT TO INSTALL THE 80C287-A- 12 IN THE EQUITY LT-286e!
The final specification for the NPX to be used in the LT-286e is the 80287 - 8,
NMOS -type. The Service Support Plan and Service Manual are being revised
to reflect this change.
Product Support Bulletin
Due to Intel design considerations, this
PSB No.:
Originator: MWT
Intel clearly warns that installing the