HP 10312D Operating Manual page 19

Analyzing the Intel 80286
1-10
5. Place the interface connector, attached to the end of the cable from
the interface module, in the LCC adapter socket.
6. Place a PGA style 80286 microprocessor on top of the interface
cable connector.
Note
If a PGA style 80286 microprocessor chip is unavailable, an
LCC style device can be installed by first installing the LCC
socket, supplied with the HP 10312D, in the top of the
interface connector. If the plastic orientation indicator pin
isn't already cut off of the LCC socket (part no. 1200..1138),
cut it off so that the LCC socket can be flush mounted on the
top of the connector. Then install the LCC style 80286
microprocessor in the LCC socket. Install the heatsink,
supplied with the HP 10312D, in place of the U-shaped IC
retainer that goes on top of the microprocessor. The
additional socket adds capacitance to the circuit, but
shouldn't affect the perfonnance of the microprocessor chip.