The GE Common DC Bus Regenerative Board DS200GSIAG1CBA contains three 40-pin connectors, two 16-pin connectors, and 6 jumpers. The board also has 1 8-pin connector, and multiple test points. The test points can be used by a qualified servicer to diagnose the board if the board doesn’t function correctly. To use the test points, first remove all power to the drive and then use a tester to verify that all power is disconnected from the drive. Typically this is performed by removing the fuses from the power supply attached to the drive.
Once the drive is safe to touch without the potential of electric shock and burn, open the board cabinet and remove the screws that secure the board to the rack. The board is attached with four screws in the four corners of the board. To avoid damaging all the boards and components, have a good view of the interior of the cabinet and prevent the screwdriver from scraping against the components or striking them. Use two hands to remove the screws and washers. One hand to turn the screwdriver and the other to hold the hardware. Before you unplug the cables, note where they are attached to the board. You might find it helpful to write down the connectors to which the cables are attached.
Hold the board by the edges when you remove it and place it on a flattened static protective bag. Place it on a clean flat surface and wear a wrist strap to drain static electricity from the board and your body.