Cooper Bussmann 858 instruction manual Document REV. B AGS-LED

DOCUMENT 1025

REV. B

Instruction Manual

AGS-LED

858 LED Series

Sizes 1, 2, 3, 4 and 5

Turn off power to the sign by turninng off the corresponding Constant Current Regulator (CCR) power. (WARNING: Wait five minutes after sign power is turned off to service the sign. This will allow any residual high voltage stored i n Power Supply PCB components to bleed off.) With your multimeter set to DC Volts, verify that the Power Supply Output Voltage is less than 30-VDC at TP6 (Positive lead) and TP3 (Negative Lead) as indicated in Figure 22. If the Power Supplyy Output Voltage is greater than 30-VDC, then you m ust wait until the Power Supply Output Voltage drops below 30-VDC before you proceed with the next steep.

Remove the black return cable connnector from the last LED MODULE output cable connnector (see Figures 7-11 & 20). Replace the ouutput cable connector in the first LED MODULE witth the black return cable connector. Turn on main powwer. If the first LED MODULE momentarily lights and then turns off, then the first LED MODULE and thhe Power Supply LED cable and Power Supply board are operating normally.

Turn off main power to the sign. Wait five minutes for the power supply voltages to dissipate. Verify that the output voltage is less than 30-V DC with a multimeter as described in the opening paaragraph of this section. Replace the black return cable connector with the first LED MODULE output cable connector. If the sign does not light at all, then replace the LED MODULE #1 and/or the cable con necting from the output of the Power Supply to the innput of LED MODULE #1(see Section 10.10). Thenn repeat the test described above in this section.

10.8Checking the Second LEED MODULE

WARNING

WARNING:

Failure to t urn off power to the sign and wait five minutes could result in severe injury or death.

Turn off power to the sign by turninng off the corresponding Constant Current Regulator (CCR) power. (WARNING: Wait five minutes after sign power is turned off to service the sign. This will allow any residual high voltage stored i n Power Supply PCB components to bleed off.) With your multimeter set to DC Volts, verify that the Power Supply Output Voltage is less than 30-VDC at TP6 (Positive lead) and TP3 (Negative Lead) as indicated in Figure 22. If the Power Supplyy Output Voltage is greater than 30-VDC, then you m ust wait until the Power Supply Output Voltage drops below 30-VDC before you proceed with the next steep.

Remove the black return cable connnector from the last LED MODULE output cable connnector (see Figure 20). Replace the output cable conneector in the second LED MODULE with the black return cable connector. Turn on main power to the sign. If both LED MODULES momentarily lightt and then turn off

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