Distribution Board - IBM 6580 Product Support Manual

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SYSTEM ELECTRONICS/POWER SUPPLY - Removals/Replacements
DISTRIBUTION BOARD REMOVAL
1. Turn the system power off.
2. Perform the display module removal.
3. Perform the top cover removal.
4. Disconnect the foiiowlng connectors: Sl, S2, Al, Bl,
Cl, and D1.
5. Perform the electronics card(s) removal.
Warning: Card components can be easily damaged if the
cards are not carefully removed.
6. Remove the four card guide mounting screws, • two
card guide mounting brackets,. and two card
guides . •
7. Separate tkfe two stiffeners that enclose the distribu-
tion board.
0
NOTE: Wheri reassembling the distribution board.
and stiffeners, use the following procedure to prevent
mUltiple card damage.
8. Position the distribution board so connector A 1 is in
the lower right-hand corner, as observed from the front
of the electronics module.
9. The cable connector guide lugs must
be
on the top
surface of the horizontal rungs on both stiffeners.
10. The cable connector openings must face away from the
distribution board on both surfaces.
• •
•
Card GUide
Mounting BraCket--]
Cl~
Card Guide
Bl~ Mounting Bracket
~
Cable Connector Guide Lugs
Al----~.
Horizontal Rungs
S2
o
•
Stiffener
Stiffener.