LX2350-4 Owner's Manual
Revised January 22, 2018
Page 28
800.445.7846 · www.electro-mech.com
Power Supplies and Fuses
AC power enters each scoreboard section through the power cord attached to the top of
the cabinet. Within each scoreboard cabinet, power is routed from the plug to the Mean
Well SP-320-24 power supply module. AC line passes through a 5 amp fuse on the
way to the power module. If the scoreboard includes Electronic Team Names, a second
power supply module
─ either a Mean Well model SP-320-5 or model RSP-500-5 ─ is
added to the central chassis, and the rating of the fuse changes from 5 amps to 10
amps. An additional 3 amp fuse protects the circuit providing AC power to the
receptacles for Visual Horn Indicators mounted in the top of the cabinet frame. All fuses
in the scoreboard display are AG style and should only be replaced with fuses of this
same style and rating.
Power connections are made along a row of screw terminals on one side of each power
supply module. The Mean Well SP-320-24 power module should be set to18.9 VDC
output level. If an SP-320-5 module is present to power the ETN displays, it should
provide 5 VDC output. If you replace any of the power supply modules, check the
output voltage to make certain it is set correctly.