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Gradient / GRAM TROUBLESHOOTING

8645/GRAM Troubleshooting - This troubleshooting guide is structured for an experienced MR Field Engineer to troubleshoot based on symptoms typical of gradient driver problems.

• 8645 Overload with GRAM - flowchart
• Troubleshoot Gram, GAP, and Load -flowchart
• 8645 Power Module Isolation -flowchart
• Overflow, Underflow, Overrange -flowchart

GRAM Troubloeshooting Harness - Procedure regarding  a GRAM Troubleshooting Harness that allows GRAMs to be swapped without actual physical movement.

SGD TROUBLESHOOTING   

SGD Base Cabinet Troubleshooting Flowchart - flowchart

SGD Overload - flowchart

SGD HI SLEW Problem Isolation - There are some problems in the gradient driver system that cannot be isolated to a particular axis by diagnostics or symptom analysis. Isolating to a replaceable FRU may require swapping of hardware between axes and regenerating the problem. The following procedures give instructions on how to swap the various FRU’s between axes