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3 .
Remove a l l feature boards by grasping the ejector levers at the s ides
of each feature board and pul l ing toward the rear of the proces sor
unit .
4 .
Remove the MMU board i f s o equipped . See Section 5 . 4 . 1 , "Removal . "
Remove the power suppl y . See Sect ion 5 . 5 . 1 , "Removal . "
5 .
6 .
Remove the expansion board . See Section 5 . 6 . 1 , "Removal . "
7 .
Remove the interface assemb ly from planar board if so equipped .
Section 5 . 1 8 . 1 , "Removal . "
Remove the ROM plug - in drawer . See Sect ion 5 . 7 . 1 , "Remova l .
8 .
9 .
Dis connect the keyboard connector and the 5f' diskette connector from
the rear of the planar board . See Figure 5 - 15 .
1 0 .
Remove the three screws a t the rear o f the p l anar board that secure
the board to the processor unit .
N ote :
I f your IBM 9001 is not equipped with a printer/plotter , the
printer/plotter connectors referred to in the next step are not
present .
1 1 .
S l ide the p l anar board straight back a few inches and disconnect the
keypad connector the printer/plotter connector and the CRT connector
from the front o f the planar board .
1 2 .
Remove the p l anar board by carefully s l iding i t out the rear o f the
processor unit .
See Figure 5 - 1 3 B .
See Figure 5 - 1 3 A .
Removal and Replacement Procedures 5 - 1 8
See
1 1
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