SC5300BRP issue
Inter server board SE7520AF2 is the most powerful in the Dual Processors series. Hainan’s customer need this board installed in SC5300BRP chassis. In our factory, we put the AF2 board in the SC5300 chassis, added a 20320 SCSI card, and then the workers had tested this platform. Both two ethernet devices, Marvell and Intel 82541 was found in the operating system which is Windows 2000 advance server and BIOS menu.
It seemed everything was ok and this machine could be shipped out. At the final step before it was carried out, the IQC guys told me that the two ethernet devices were disappeared in the BIOS and operating system. I tried to re-flash the latest BIOS and Firmware. As the result, the ethernet devices were still not found. For the time of shpping out, we had to change another AF2 boards. The changed board was sent back to Intel 800.
Maybe one weeks passed, the customer called me and said that they could not find the ethernet device. I was surprised by this issue. The customer even could not see the Network device in the prior select menu in the BIOS.Yes, It is an emergency issue I had to face.
The chassises we sold were designed by Intel Corp. We do not know how to dare with such a strange matter. So we had to change this board and took it back to our lab. I had done many times test in checking the existing of ethernet devices by building a test environment including one cpu,one memory and one power supply. The factor is the ethernet devices are really lost, we could not find them again.
We send this board from Hainan customer to Inter TME who is the Alief own. Mr Yue is a kind man with good patience. He did the FA, and told that two capacitances between the Air Conductor and board had been destoried. This issus had been reported from Eurpean customer two months ago.
When we are discussing the reason which cause this matter, another board in Hainan was down for the seem phenomena: Ethernet devices were lost. Mr Yue said, there were two reversion named 601 and 602 made in Intel Korean factory, and these board did not pass the test which could halted the operating system in two weeks. The engineer renewed his board by adding some components and update 601 and 602 to 603. The latest version of Alief is 703. The board we got is 601 update to 603 with a green dot signed on the PBA label.
The issus is caused by Airconductor of SC5300BRP, not Alief Board. Intel has commited it is their design bug.They plan to add a “L” palstic on the board to provent they were destoried by the SC’S airconductor. This “L” platic are still testing in their factory and not released to end users. We had to use a small sponge instead of the palstic.