Replace The Power Supply Backplane Board (Fru) - Oracle Sun Server X4-4 Service Manual

Replace the Power Supply Backplane Board (FRU)

When servicing the components in this section, unplug the AC power cords and use ESD
protection.
Caution -
server is in standby power mode. Disconnect power cords before servicing the power supply
backplane board.
For serviceability considerations, see
Before You Begin ■
1. Prepare the server for service. See
Service" on page
2. Disconnect the SAS/SATA cables from the disk drive backplane and the HBA.
3. Remove all PCIe cards from the server taking care to note their slot
assignments. See
Make a note of where each PCIe card installed so they can be put back in the same slots.
The internal SAS/SATA cables do not need to be removed, but must be out of the way as the
motherboard needs to be removed.
4. If the server has two CPUs, carefully remove the air baffle, taking care not to
damage the fan board ribbon cable.
Lift the baffle slowly and maneuver its front edge away from the ribbon cable while removing.
Caution -
board ribbon cable. The front support foot for the air baffle is located under the cable.
5. Remove all memory riser cards. See
Card" on page
6. Disconnect the fan board data and power cables from the motherboard.
Hazardous voltage. The system supplies power to the power board even when the
90.
"Remove a PCIe Card" on page
Component damage. Lifting the baffle straight up from the server can damage the fan
131.
Replace the Power Supply Backplane Board (FRU)
"Component Serviceability" on page
"Prepare the Server for Cold
148.
"Remove a Memory Riser
Servicing FRU Components
66.
197