HP A4500A - VMEbus Single Board Computer 744 Motherboard Hardware Manual page 185

PCI Backplane Replacement
The PCI backplane is located on the back of the I/O Card cage. I/O slot 1 is located on the outside of the PCI
I/O card cage and slots 2, 3, and 4 are attached to the PCI backplane inside the I/O card cage.
Ensure that the system is shut down and power removed from the server before attempting
CAUTION
removal or replacement of a component.
To replace the PCI backplane, perform the following steps:
Step 1. Lay the I/O card cage, open side down, on a clean, dry surface. When installed, the PCI backplane
will be facing up.
Step 2. Grasp the PCI backplane by the edges and carefully set it on the card cage retainer posts.
Step 3. Slide the PCI backplane to one side so that the retainer posts lock into the keyhole slots.
Step 4. Replace the T-10 retainer screw that secures the PCI backplane to the card cage.
Step 5. Replace all PCI cards.
NOTE
Step 6. Replace the I/O card cage into the server.
CAUTION
Step 7. Replace the I/O card in slot 1.
Step 8. Attach the I/O cables to the back of the server.
The following graphic shows the PCI Backplane.
Chapter
PCI Cards must be re-installed in the same slots from which removed, or I/O
reconfiguration may be required.
Do not scrape the I/O Backplane against the CPU heat sink when removing or
replacing the card cage. Failure to heed this precaution may cause serious damage to
the backplane.
PCI Backplane Replacement
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