About the DS3800HAIC1D1B
The GE Regulator Board DS3800HAIC1D1B features a modular connector for attachment to a drive and retention levers to hold the board in the drive. The GE Regulator Board DS3800HAIC1D1B also is populated with 9 jumpers, and 2 trimmer resistor components. The board also has 1 20-pin connector and several test points.
The trimmer resistors are embedded on the board to enable a servicer or technician to configure the resistors to perform as required for the drive. When the board is delivered from the factory, the trimmer resistors are set for a standard environment. However, if you see the need for adjustment, the board can be removed and the resistors can be adjusted. Only a certified technician should attempt to adjust the trimmer resistors because of the opportunity to damage the board or cause suboptimal performance. The trimpots are adjusted by turning a small screw on the top of the component. The trimmer resistors are sometimes called trimpots. This is due to the fact that they are potentiometers.
Once the servicer has set the trimpots to provide the best performance, you must prevent the screw from being disturbed. To do that, it is sometimes best to drop a small amount of a liquid that hardens over the screws. The liquid when dry can be peeled off the trimpot if more adjustment is required. This might be the case if the board is installed in another drive or if other components change the configuration of the drive.