R640 Motherboard LED codes

Hello,

Looks like it is not completing power on and POST and iDRAC is not initializing .

Try a flea power drain and check results

Next try a Clear NVRAM and check results

If issue remains then bring it down to Minimum to POST components and test

*drain flea power (shut down, disconnect power cables and Network cables, hold in power button 20 seconds with cords removed). After flea power drain, system has to set for 3 minutes for DRAC to reset without any power plugged in, then plug in NIC and power but wait 2 minutes before power on to give DRAC time to initialize.

*Clear NVRAM

- there is a map under the lid to show the jumper location. Shut down, Set jumper to the Clear position, power on and Post up to the jumper error, shut down and return jumper to original location.

*Minimum to post (this is minimum components to POST, it won't boot, this is to test POST. If successful POST, put things back a little at a time until find faulting component)

The minimum components to allow the PowerEdge R640 to complete POST are:

● System board

● Power supply

● One processor (CPU) in socket CPU1 (minimum for troubleshooting)

● One Memory Module (DIMM) installed in socket A1

Remove anything not on that list: DVD, Hard drives, PERC controller, backplane, network card, NIC cable, any pcie cards, keyboard, mouse, USB devices, …. anything not on the list remove.

If it does not complete POST then the issue is with one of those minimum to POST components.

If you get successful POST, put things back a little at a time until you find the faulting component.

Your System board LED patterns defined:

A

S7-System is in power-up state S7

Enabled V_VSB11 power and waiting for its power good signal in order to proceed. The VSB11 rail feeds the iDRAC

B

S28-System is in power-down state S28

Main power rails are being powered down. Should proceed into the standby state after 7 seconds

C

V_VSB11 Failure

A power fault or failsafe condition has been detected on the V_VSB11 rail. The VSB11 rail feeds the iDRAC

Variant

Failsafe Timeout

If you're still under warranty I would recommend contacting Support directly US/Canada 1-800-945-3355

If you are another region you can use this look up tool:

https://dell.to/4cxjh4Z

Thanks for your help, this is really helpful.

I had already tried the non-intrusive methods: drain flea power and clear NVRAM

I've now tried to disconnect everything from the motherboard: front panel connectors (including the control panels ones), the chassis open/close switch, all the memory modules (but one), the 2nd CPU, the 2nd PSU, all the network cards, all the fans but one, the IDSDM module. Then I swapped the remaining components: CPU, memory module, PSU, PSU position, fan. The onboard LEDs keep showing the same pattern when I put the power cable.

I guess I need to contact the support team, right?

Hi, thanks for your feedback and your troubleshooting effort. Yes, I would recommend contacting phone support because I think there is a hardware failure.