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6 .
Replace the power supp ly .
7 .
Inst a l l the MMU board i f so equipped . See Section 5 . 4 . 2 , "Replace
ment . "
8 .
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 o f the processor
unit frame . G rasp the ej ector levers and push toward the front of
the processor unit until the feature boards are firmly seated in the
expansion board .
9 .
Replace the printer/plotter control board. See Section 5 . 2 . 2 , "Re
p lacement . "
10 .
Replace the covers .
5 . 7
READ ONLY MEMORY ( ROM) CARD
The Read Only Memory (ROM) card p lugs into the planar board and is located
in the smal l drawer on the right s ide of the processor unit .
5 - 1 2 .
5 . 7 . 1
REMOVAL
Posit ion the IBM 9 001 power switch to OFF .
1 .
2 .
Posit ion the processor unit so that there is at least 1 2 inches o f
clearance on the right s ide .
Grasp the drawer ' s hand le and pul l the drawer straight out o f the
3 .
processor unit . See Figure 5 - 1 2 .
4 .
Remove the ROM card from the drawer by unscrewing the two mounting
s crews and l i ft ing it out . See Figure 5 - 12 .
See Section 5 . 5 . 2 , "Repl acement . "
See Sect ion 5 . 1 . 2 , "Rep lacement . "
Removal and Replacement Procedures 5 - 1 6
See Figure
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