HP A4500A - VMEbus Single Board Computer 744 Motherboard Hardware Manual page 183

PCI Backplane Removal
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 remove the PCI backplane from the server, perform the following steps:
Step 1. Remove the I/O cables from the back of the server.
Step 2. Remove the I/O card from slot 1.
Step 3. Remove the I/O card cage from the server.
CAUTION
Step 4. Remove all PCI cards.
NOTE
Step 5. Lay the I/O card cage, open side down, on a clean, dry surface. The PCI backplane is facing up.
Step 6. Remove the T-10 retainer screw from the PCI backplane.
Step 7. Slide the PCI backplane to one side, so that the retainer posts will clear the keyhole slots.
Step 8. Grasp the PCI backplane by the edges and carefully remove it from the card cage.
The following photograph shows the PCI Backplane.
Chapter
Do not scrape the I/O Backplane against the CPU heat sink when removing or
replacing the card cage. Failure to heed this precaution could cause serious damage
to the backplane and require replacement.
Note the order of PCI card installation prior to removal. Cards must be re-installed
in the same slots, or I/O reconfiguration may be required.
PCI Backplane Removal
255