Cooper Bussmann 858 - Manual (Page 25)

DOCUMENT 1025
REV. H
Instruction Manual
AGS-LED
858 LED Series
Sizes 1, 2, 3, 4 and 5
16
the sign. If LED MODULES #1 to #5 momentarily light and then turn off, then the LED MODULE #5
and the cable from the LED MODULE #4 to the LED MODULE #5 are operating normally.
WARNING:
WARNING
Failure to turn off power to the sign and wait five minutes could result
in severe injury or death.
Turn off main power to the sign. Wait five minutes for the high voltage to dissipate. Verify that
Power Supply Output Voltage measures less than 30-VDC, as described above. Replace the black
return cable connector with the LED MODULE #5 output cable connector. Replace the black return
cable connector into the output connector housing of the 6
th LED MODULE.
If the sign does not light at all, then replace the LED MODULE #5 and/or the cable connecting from the
output connector of LED MODULE #4 to the input of LED MODULE #5 (see Section 10.10). Then
repeat the test as described in this section.
10.10 Replacing an LED MODULE
In the case where an LED MODULE has failed and needs to be replaced use the following instructions:
INSTRUCTIONS FOR REPLACING AN LED MODULE
The following instructions assume that the sign front face is removed and that the failed LED
MODULE has been previously identified
.
WARNING:
WARNING
Failure to turn off power to the sign and wait five minutes could result
in severe injury or death.
1. Turn off power to the sign by turning 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 in Power Supply PCB components to bleed off.)