PowerCore / Konnekt / Impact FireWire troubleshooting under Mac OS X

Question

My PowerCore / Konnekt / Impact FireWire device is not working correctly under Mac OS. What should I do?

Answer

Often the problem is something as simple as a bad FireWire cable, but it can also mean a bad enclosure, FireWire port, bad FireWire device power supply, or a logic board problem with the FireWire bus on the Mac in question.

Please follow the steps below:

  1. Review the following Knowledge Base article Konnekt / Impact Twin: Troubleshooting in Mac OS X
  2. Review the following AppleCare Knowledge Base document "USB and FireWire Quick Assist"
  3. If you are using FireWire audio devices with either a Power Mac G5 (Late 2005) or iMac G5 (Ambient Light Sensor), see"Power Mac G5 (Late 2005), iMac G5 (Ambient Light Sensor): FireWire bus stops responding after computer restarts with FireWire audio device attached."
  4. If you are using a MacBookPro, see: 
    "MacBook Pro: What to do if bus-powered FireWire devices don't appear in menus or behave correctly." 
    "MacBook Pro: Sleep issues with NitroAV 2-port FireWire 800 card"
  5. Power-on the FireWire drive before starting up or booting your Mac.
  6. Reset PRAM and NVRAM
  7. Reset the power-management chip in your Mac.
  8. Try a different FireWire port. WiebeTech has published FireWire Port Failures in Host Computers and Peripheral Devices, a white paper providing background information and technical analysis concerning the causes of failure for FireWire ports. This may provide additional diagnostic information.
  9. Recent versions of Micromat TechTool® Pro can test the FireWire bus in your computer. This tests the bus — not the ports — but if the problem is on the FireWire bus on the logic board, the test should find it 

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