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5 . 8 . 2
REPLACEMENT
N ote :
If a new planar board is being instal led , remove the ROM card from
Remove the current ROM card from the ROM p lug - in drawer
the new board.
and replace it with the new one .
1 .
I f the CPU is equipped with a Memory Management Unit and i f the board
being replaced is not the one removed , l i ft the 68000 minicomputer
chip from the replacement p l anar board and the MMU interface assembly
from the replaced planar board . See Section 5 . 1 8 , "Removal . "
fully plug the interface assembly into the replacement board .
Section 5 . 1 8 . 2 , "Replacement . "
board .
2 .
S l ide the p l anar board straight in the bottom s lot of the processor
unit to within a few inches of the end of its trave l .
3 .
Reconnect the keypad connector and the two printer /plotte. r connec
tors ( i f present) to the front of the planar board . See Figure 5 - 14 A .
4 .
S l ide the planar board the rest of the way in .
5 .
Secure the p lanar board to the processor unit with the three screws .
See Figure 5 - 1 3 B .
6 .
Reconnect the keyboard connector and the st" diskette connector to
the rear o f the planar board . See Figure 5 - 1 3 B .
Replace the ROM p lug - in drawer . See Section 5 . 7 . 2 , "Replacement . "
7 .
8 .
Replace the interface assembly on the planar board if so equipped .
See Section 5 . 1 8 . 2 , "Replacement . "
9 .
Replace the expansion board . See Sect ion 5 . 6 . 2 , "Repl acement . "
10 .
Replace the power supp ly .
1 1 .
Replace the MMU board i f so equipped .
ment . "
12 .
Replace a l l feature boards by s l iding each o f them into the processor
unit unt i l the ej ector levers hook onto the s ides of the processor
unit frame .
Then grasp the ej ector levers and push toward the front
of the processor unit unt i l the feature boards are firmly seated in
the expansion board.
1 3 .
Replace the printer/plotter control board.
p l acement . "
See Sect ion 5 . 6 , "ROM Card . "
Install the 68000 with the replaced
See Section 5 . 5 . 2 , "Replacement . "
See Sect ion 5 . 4 . 2 , "Rep lace
See Sect ion 5 . 2 . 2 , "Re
Removal and Rep l acement Procedures 5 - 2 0
Care
See
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