Signal-Tech TCL Series Troubleshooting Manual

1, C Output LED B Output LED +12V LED A Output LED Output Connector B Output Connector A Power Supply Pigtail Connector Output Power to Sign Face Sign Face TCL Series Troubleshooting Guide Tools Needed: Philips head screwdriver Multi-meter Always turn off the power to the sign prior to o…

2, Problem: There are some LEDs out TCL Series 12-24VDC Please refer to the diagrams on page 1. There are some LEDs out YES NO NO NO YES Check switches and wiring Supply is defective and needs replaced Entire sign needs replaced < 10 LEDs Lit Can you measure the correct incoming volta…

3, Problem: A message is lit that shouldn’t be TCL Series 12-24VDC A message is lit that should not be Do the wires run parallel to other high power devices? Run wires in separate conduit NO Is there incoming voltage on that channel? YES Recheck all connections to switches or contr…

4, Problem: Display is ickering TCL Series 12-24VDC Please refer to the diagrams on page 1. Display is ickering YES NO NO External power source may be AC or it may not have adequate current capacity to accommodate the sign’s power supply inrush current Check switches and wiring Supp…

5, Signal-Tech TCL Series Contact sales with the serial number of the sign Entire display is out NO YES YES YES NO Re-attach connector NO YES Is the output connector secure? Is the +12V LED illuminated steady? Is the input polarity correct? Is the output LED for the aected message illuminated? Supply is de…