IBM System 9000 Troubleshooting And Servicing page 95

Benchtop computer
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6 .
Replace the covers . See Section 5 . 1 . 2 , "Rep l acement . "
5 . 6
EXPA N S I O N BOA R D
The expansion board i s p lugged into the p lanar board and i s located behind
See Figure 5 - 5 .
the power supp ly.
5 . 6 . 1
REMOVAL
1 .
Remove the covers . See Section 5 . 1 . 1 , "Remova l . "
Remove the printer/plotter control board. See Section 5 . 2 . 1 ,
2 .
mova l . "
3 .
Remove a l l feature boards by grasping the ejector levers at the s ides
of each one and pul l ing toward the rear of the processor unit .
Figure 5 - 8 .
4 .
Remove MMU board i f inst a l l ed . See Section 5 . 4 . 1 , "Remova l . "
5 .
Remove the power supply. See Section 5 . 5 . 1 , "Remova l . "
6 .
Disconnect the three DC connectors from the expansion board .
F igure 5 - 1 2 .
7 .
D is connect the grounding c l ip from the processor unit frame and re­
move the DC cable assembly.
8 .
Remove the frame cutout insert on the right s ide of the processor
unit above the Power switch .
9 .
Remove the expansion board by grasping the ejector levers located
on each s ide of the expansion board and pul l ing up .
See Figure 5 - 1 1 .
See Figure 5 - 1 1 .
Removal and Replacement Procedures 5 - 1 4
' ' Re­
See
See

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