Digital Equipment DEC 3000 500X AXP, Service Information, Page: 90 / 112

System Module
System Module
Removal NOTE
Before the system is powered down, have the system
manager perform a system shutdown if needed.
To remove a failed or damaged system module:
Step Action Refer to Figure
1 Perform the system shutdown. –
2 Power down the unit. –
3 Remove the top cover. –
4 Remove both side panels. –
5 Remove the fan bracket assembly. –
6 Disconnect the cables shown.
!
Figure 7–23
7 Disconnect any TURBOchannel
cables from the rear of the unit.
"
Figure 7–24
8 Remove any TURBOchannel
modules. # Figure 7–25
9 Remove memory motherboards
(MMB).
Do not remove memory modules
from memory motherboards.
–
10 Disconnect the regulator module
sense cable from the system
module. (Figure 7–26
"
shows
the connector on the system
module.)
$
11 Release the five captive rivets
and two thumbscrews.
%
12 Remove the system module.
Continued on next page
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