Oracle X5-4 Service Manual page 254

Replace the Motherboard (FRU)
23. Lower the motherboard into the server and carefully guide the light pipe
extension piece for the Locator indicator at the back of the motherboard into its
hole at the rear of the chassis.
Ensure that the switch operates easily and is not stuck in the depressed position.
24. Ensure that the keyed holes in the plate attached to the underside of the
motherboard are aligned with the locking standoffs in the chassis.
25. Slide the motherboard toward the back of the server. Ensure that motherboard
rear connectors fit completely into the holes provided in the chassis sheet metal.
This action locks the motherboard and aligns the captive screw on the motherboard plate
(towards the front of the server) with its thread hole in the chassis.
254 Oracle Server X5-4 Service Manual • December 2015