Thanks Alec! On Mon, Dec 10, 2012 at 10:31 AM, Alec Rust <alec.r...@ska.ac.za> wrote:
> Hi Nimish. We have fixed the fault led behavior on rev2. You will have to > update the u-boot on your board. I am working on a few other issues and > will issue instructions to do this in the next few days. But for now you > can ignore the fault led as it's reporting spurious fan errors. > > Regards > Alec > > > On Thu, Dec 6, 2012 at 7:25 PM, Nimish Sane <nimish.s...@njit.edu> wrote: > >> Hi all: >> >> We have Roach2 Rev2 boards and experienced similar behavior with the >> Fault light. We have not used the FPGA at all yet, so cannot report on how >> it affects programming the FPGA. >> >> We are seeing Fault LED (Red) ON sometimes, and merely cycling power >> using the "Power" switch on the board does not resolve it. We need to pull >> the plug to power it down and then put it back and power up. >> >> Is this a normal behavior? >> >> It would be helpful to know what can drive the FAULT LED to turn ON and >> what is the best way to resolve the fault. >> >> Thanks, >> >> Nimish >> >> >> On Tue, Oct 30, 2012 at 4:52 AM, Alec Rust <alec.r...@ska.ac.za> wrote: >> >>> Hi Kim, it sounds like your board needs the REV1 mods done. There is a >>> problem on rev1 boards where the PPC temperature monitor indicates an >>> incorrect temp fault which stops the FPGA from being programmed. The will >>> be solved by removing a resistor. >>> >>> Please do the following mods on your board: >>> Hi all, here is a list of mods that must be done to ROACH2 rev 1 boards: >>> >>> 1. Remove R270, R141, R142, R262 >>> 2. There is too much thermal relief on the power busses, wires must be >>> soldered in to bypass this thermal relief. Use AWG12 or similar wire (2mm >>> or 0.08" diameter). See attachments. >>> >>> Regards >>> Alec >>> >>> >>> On Tue, Oct 30, 2012 at 3:57 AM, Kim Guzzino <kguzz...@hawaii.edu>wrote: >>> >>>> Hello all, >>>> We are having problems with our Roach 2 and don't want to update the >>>> Borph/uboot yet. Occasionally we get a fault light and our fpga will not >>>> run until we power down (by pulling the plug) and then up. If we cycle >>>> power with the power button the fault light remains, even after loading >>>> the bof. >>>> Question, under what conditions is the fault light driven? >>>> That' it. >>>> Kim >>>> >>>> >>>> >>>> >>> >> >> >> -- >> Nimish Sane >> >> Center for Solar-Terrestrial Research >> New Jersey Institute of Technology >> University Heights >> >> Newark, NJ 07102-1982 USA >> >> Tel: (973) 642 4958 >> >> Fax: (973) 596 3617 >> nimish.s...@njit.edu >> >> > -- Nimish Sane Center for Solar-Terrestrial Research New Jersey Institute of Technology University Heights Newark, NJ 07102-1982 USA Tel: (973) 642 4958 Fax: (973) 596 3617 nimish.s...@njit.edu
