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Vanguard Multiport 4520CP Controller User’s Guide 6-1
CHAPTER 6 Troubleshooting
This chapter describes problems you could possibly experience with your Vanguard
Multiport card and the actions you should take to diagnose and solve those prob-
lems. Topics covered in this chapter include:
• Resolving installation problems
• Clearing hung Async ports
• Using the xxtrace driver tracing utility
• Troubleshooting using mset (Async only)
• Troubleshooting with mset (async only)
• Calling for support