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Detail 2-5A
(
)
Carefully unplug integrated circuit IC207 from
its socket. Then modify this integrated circuit
as follows:
1.
Refer to Detail 2-5A and note how the pins
are numbered.
2.
Carefully bend lug 2 of the integrated circuit
out as shown so it cannot make contact with
the socket when you reinstall it in the next
step.
(
)
Refer to Detail 2-5B and reinstall integrated cir
cuit IC207 in its socket. Be sure to position the
integrated circuit so pin 1 is at the correct loca
tion.
(
)
Carefully unplug IC204 from your CPU circuit
board.
Detail 2-5B
NOTE: The integrated circuit that you will install in
the next step is a rugged and reliable component.
However, normal static electricity discharged from
your body through an integrated circuit pin to an
object can damage the integrated circuit. Read the
entire instruction first. Then carefully do each step
without interruption.
(
)
IC204: Install a ROM IC (444-70) at IC204 in
your CPU circuit board as follows:
1.
Remove the IC from the conductive foam.
2.
Hold the IC in one hand and straighten any
bent pins with the other hand.
3.
Continue holding the IC, being careful not
to touch it to anything while you touch the
circuit board with your other hand.
4.
Install the IC in its socket. Be sure to install
this IC so its pin 1 end is toward the index
mark on the circuit board. See Detail 2-5C.
(
)
Carefully reinstall the CPU circuit board in your
Computer. Be sure to reconnect the 5-pin socket
coming from the front circuit board in your
Computer.
NOTE: Make sure to reconfigure your memory circuit
boards so the memory starts at 0 k instead of 8 k. (To
set the Model WH8-16 16 k Memory Board to start at
0 k, push the four ORG ADDR switches to OFF and the
ENABLE switch to ON.)
(
)
Reinstall the tie bracket and top cover on your
Computer.
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