ELECTRICAL INSTALLATIONWe recommend a qualified electrician perform the needed electrical connections to ensure proper operation of the scoreboard. These connections include connecting the scoreboard to a power source, installing the SL-230 / 330 RF MODEMS or the control cables, and connecting the control consoles. The installation of goal lights and multiple scoreboards at the same site is also described in this section. Power Connection The scoreboard requires 120 VAC service at the scoreboard to operate properly. Maximum power consumption of Model 2556: 393 Watts. The scoreboard has a 9 ft. attached power cord located at the top of the cabinet. Plug the power cord into a grounded NEMA 5-15R receptacle. The receptacle should be controlled by a separate circuit breaker so that the scoreboard can be turned off without turning off other electrical devices in the facility. Figure 3 shows the electrical connection points on the scoreboard.
The SL-230 / 330 RF MODEM SYSTEM is designed to eliminate the control cable between the scoreboard and the control console on Electro-Mech Scoreboard MM and MP series scoreboards as well as all LED scoreboards. If you have purchased this accessory, disregard the section of this manual titled Control Cable Installation. Refer to the installation manual provided for this product. Control Cable Installation Two control cables must be installed for this scoreboard. These cables must not be connected together at any point. No cable lengths should exceed 1000 feet. The control cables allow data to be transmitted from the control consoles to the scoreboard. Install one control cable from the SERIAL DATA INPUT ¼” stereo jack on the top of the scoreboard above the GUEST STAT PANEL section (left end of the scoreboard) to within 10 feet of the 2056 control console. Install the second control cable from the SERIAL DATA INPUT ¼” stereo jack on top of the scoreboard above the game clock (middle of the scoreboard) to within 10 feet of the 2550 control console. A small junction box with a ¼” stereo jack mounted on the face plate is attached to each control cable at the point of operation of the scoreboard. These junction boxes should be securely mounted within ten feet of the rear of the control consoles. Most customers order the control cables with the junction boxes attached. Some customers prefer to attach the junction boxes after the cables are installed. Those customers must solder the control cables to the ¼”stereo jacks. Figure 4 shows the control cable wire connection points on the rear of the ¼” stereo jack.
A ¼” stereo plug is attached to the scoreboard end of each control cable. The ¼” stereo plugs are inserted into the appropriate SERIAL DATA INPUT ¼” stereo jacks mounted on top of the scoreboard. Most customers order the control cables with the ¼” stereo plugs attached. Some customers prefer to attach them after the cables are installed. Those customers must solder the ¼” stereo plugs to the cables according to the figure 5. Unscrew the stereo plug cover from the plug body to expose the contact pins.
Control Console Connections Each 10 ft. extension cable has two molded ¼” stereo plugs attached to it. Three cables are provided to connect the control consoles to the junction boxes. The following steps describe how to connect the control consoles:
Control Console Safety Warning This product is equipped with a 3-wire grounding type plug, a plug having a third (grounding) pin. This plug will only fit into a grounding-type power outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact a qualified electrician to replace your obsolete outlet. Do not defeat the purpose of the grounding-type plug. Goal Lights Installation This scoreboard can control a set of goal lights. The following steps describe how to install a goal light:
Installation of Two or More Scoreboards at the Same Site The control console that operates the middle section of the scoreboard also can control other Electro-Mech Scoreboard company LED basketball scoreboards. Up to 4 compatible scoreboards using control cables or an unlimited number of compatible scoreboards by installing a SL-230 / 330 transmitter at the control console and a SL-230 / 330 receiver at each scoreboard. Never splice the control cables together or connect them to the same junction box. Each scoreboard will need to be connected to 120 VAC service.
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