[c-nsp] 720x VXR -12V Sensor
Does anyone know which IC is being used by the 720x VXR router for monitoring the voltage readings (specially the one for -12V)? I've looked around and seems the DS1620 on I/O card is only for temperature. I could be wrong though. Would appreciate if anyone can point me into the right docs. Trying to troubleshoot an internal -12V issue which shuts down my 7206VXR upon reaching the threshold within 5 minutes of power-up. This happens on C7206VXR chassis, NPE-400, I/O-2FE/E controller. I have only been looking into the I/O controller. All tray fans working; input voltage good and clean on either/both PSU's. Inlet/outlet temps within range. Thanks, roy ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] 720x VXR -12V Sensor
Roy, I encountered a similar issue with a 7204VXR + I/O-2FE/E + NPE-225. I worked with TAC and started by replacing both power supplies; no good. This router was due for an NPE-G1 upgrade so I installed the replacement and kept the I/O controller installed; no good. I finally pulled out the I/O controller and that solved the problem. -mtw From: cisco-nsp-boun...@puck.nether.net [cisco-nsp-boun...@puck.nether.net] On Behalf Of roy [bandwidth.u...@gmail.com] Sent: Tuesday, September 22, 2009 03:52 To: cisco-nsp@puck.nether.net Subject: [c-nsp] 720x VXR -12V Sensor Does anyone know which IC is being used by the 720x VXR router for monitoring the voltage readings (specially the one for -12V)? I've looked around and seems the DS1620 on I/O card is only for temperature. I could be wrong though. Would appreciate if anyone can point me into the right docs. Trying to troubleshoot an internal -12V issue which shuts down my 7206VXR upon reaching the threshold within 5 minutes of power-up. This happens on C7206VXR chassis, NPE-400, I/O-2FE/E controller. I have only been looking into the I/O controller. All tray fans working; input voltage good and clean on either/both PSU's. Inlet/outlet temps within range. Thanks, roy ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] 720x VXR -12V Sensor
Does anyone know which IC is being used by the 720x VXR router for monitoring the voltage readings (specially the one for -12V)? I've looked around and seems the DS1620 on I/O card is only for temperature. I could be wrong though. Roy, It looks like the TL7705BC or TL7702BC are the components you are looking for. These appear to be designed to monitor voltages from 0-18V. http://pdf1.alldatasheet.com/datasheet-pdf/view/177129/TI/TL7705BC.html http://pdf1.alldatasheet.com/datasheet-pdf/view/177128/TI/TL7702BC.html They are labeled as U33 and I believe U32 on this card. (The U32 is not clearly readable on the pcb). These are located above the SIMM slot on the IO card. http://www.bsd.am/IMG_4312.JPG (warning, hi-res) HTH, B ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] 720x VXR -12V Sensor
Thanks Matt and Brian. This indeed seem to be an I/O controller issue (although the CCO docs say the sensors are on the PSU and the engine was supposed to process them). I've tried swapping I/O controllers keeping the rest of the hardware configuration intact; router up and running for more than 12hrs. Might need to track down what's giving an increase in resistance which results to overshooting the -12V thresholds. Regards, Roy ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
