The GE Firing Circuit Board DS3800NFCD1K1D features 1 hole in each corner for attaching with screws the board to the drive interior. The board is populated with 4 standoffs for attaching a daughter card. The daughter card provides additional processing, connectors, and features. The board is populated with multiple transistor-transistor logic devices. The GE Firing Circuit Board DS3800NFCD1K1D is also populated with 13 red indicator LEDs and 1 amber indicator LED. The board also has 1 socket for electrically erasable programmable read-only memory (EEPROM) modules. The board is also populated with multiple jumpers and 2 34-pin connectors.
A daughter card attached to the GE Firing Circuit Board DS3800NFCD1K1D has jumpers embedded on it. The jumper IDs are prefixed with the letter J and suffixed with the letter F. The middle position is a number that varies for all jumpers. Some of the jumper IDs are J5F, J3F, and J6F. The installation instructions provided with the daughter card describe how the jumper positions change the card configuration.
Also on the card are 3 potentiometers. The potentiometers have numbered dials that you can use to make an adjustment. The potentiometers have IDs and also descriptive labels. Ammeter, Volt, and Logic are the labels used to describe the potentiometers. To make the adjustments, have on hand a fully calibrated testing device with probes that are in good working condition. Do not use the probes if they have worn or missing insulation. When the adjustments are complete record the settings and keep them with the other important information about the daughter card.