d. Repeat step a through step c to reinstall the opposite PCI mezzanine and PCI riser, if necessary.
6. Replace the shroud and reinstall the T15 Torx attachment screws. Torque to 9 in-lbs.
7. Reinstall the blade into the cabinet.
5.16 IO Base Board (IOBB) Component Replacement
5.16.1 Remove Components from an IO Base Board (IOBB)
Prerequisites
Tools Required:
Adjustable torque driver, 5–40 in-lbs
T15 Torx bit
T10 Torx bit
Dusting gas
Time Required:
15 minutes
About this task
The processor daughter cards (PDC), PCIe cards, PCIe risers, and PCIe mezzanines must be transferred from
the defective IOBB IO blade to the replacement IOBB IO blade. The defective IOBB is not removed from the IO
blade. The defective IOBB and IO blade are returned to logistics.
Procedure
1. Remove the blade from the cabinet.
2. Remove the T15 Torx screws that attach the shroud to the blade and remove the shroud.
3. Remove the T10 Torx screws that attach the air diffuser bracket to the blade and remove the bracket.
4. Disconnect the power cable connectors (press the release tab and pull cable straight out) and remove the
power cable assembly.
5. Remove the PCIe cards, risers, and mezzanines.
6. Remove the processor air duct that covers the processor daughter cards.
7. Remove the processor daughter cards from the IO blade.
When removing the daughter cards from the IO blade, do not remove any components from the cards.
Compute and IO Blade Procedures
170