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MSP430-FET430UIF "Error connecting to target. Unknown Target"

Other Parts Discussed in Thread: MSP430F2234

Hai,

I am using MSP430F2234 for my application. We have designed our board in-house and it was working fine for more than 6 months. Now all of a sudden, when i try to burn a new program in the controller, it says"Error connecting to target. Unknown Target". I  have tried burning the earlier codes which have worked with the same configuration. But still i get the same error. Please some one clarify the error.  

The following is the snapshot of my error window

The folllowing is the JTAG Schematic which we have used in our board. It has worked pretty well for us so far.

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