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To Exchange the Switch Card Assembly
The diagrams in the following instructions show a 2104 Model DU3. The steps for
exchanging the switch card assembly in a 2104 Model TU3 are the same, but the
parts are turned through 90 degrees.
1. Unscrew the thumbscrew 1 on the failing switch card assembly.
Figure 62. Unscrewing the Thumbscrew on the Switch Card Assembly
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2104 Models DU3 and TU3 Operator's Guide
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