B-17
Appendix B
Step 4. Interconnecting Master Controller Bay Cards
Overview Each card has to be interconnected with every other card in the master controller bay. Read this
section to ensure that cards are interconnected.
Interconnecting
Cards
Use the following instructions and Figure B-15 to interconnect master controller bay cards.
1. Use the 733-659 Harness to connect P14 on the UPS to P3 on the master controller
motherboard. Note that the P3 connector has eight pins. Insert the harness connector on
either the top four pins or the bottom four pins, not in the middle.
2. Use 733-672 Harness to connect P4 on the UPS to P2 on the master controller motherboard.
Like the P2 connector, P3 has eight pins. Insert the harness connector on either the top four
pins or the bottom four pins.
3. If you are installing a new motherboard, orient the motherboard with the connector labeled
J1 on the right and the header labeled P1 on the left.
4. Slide the motherboard to the left until the pins are completely inserted in the connector of the
previously installed motherboard.
5. Secure the motherboard to the chassis with four torx screws.
Figure B-15. Master Controller Bay Interconnections
IMPORTANT: The leftmost board must always be the master controller
motherboard.
UPS
P14
P4
P2
P3
J1 or
J3
P1
733-659
733-672
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