4020LX   (250-5120)          Math Coprocessor           Faxback Doc. # 1589

WARNING: Incorrect installation of a math coprocessor can damage the
coprocessor, the CPU board, and/or the main login board.

Read the instructions in this section completely before attempting to install
your math coprocessor. You can also refer to the installation instructions
included with your coprocessor. Radio Shack Service Center technicians will
install add-on devices if you choose not to do so yourself.

CAUTION: Before you handle any electrical components, be sure to touch a 
grounded metal object to release any static electric charge.

NOTE: Installing the 80387 will leave an extra row of socket holes around the 
outside of the socket.

1. Orient the math coprocessor so that the dot on the corner and/or the
   notched points to Pin Socket 1.

CAUTION: Be sure that the math coprocessor is properly oriented before you 
press it into its socket. Removal of this coprocessor requires a special IC 
extraction tool.

2. Taking care not to bend or touch the metal pins, press the coprocessor into 
   the socket.