DOCUMENT 1218
REV. B
Instruction Manual
AGS-LED
312 LED Series
300mm and 400mm
iii
10.3.1
Frangible Leg Replacement (For Signs with Internal Power Cord Option) .................. 12
10.3.2
Frangible Legs Replacement (For Signs with External Power Cord Option) ............... 12
10.4
Replacing Legend Panels............................................................................................... 13
10.4.1
Legend Panel Replacement Procedure (Method 1) (From Non-Electronic Enclosure
End) ............................................................................................................................... 13
10.4.2
Legend Panel Replacement Procedure (Method 2) ....................................................... 14
10.5
Troubleshooting ............................................................................................................. 15
10.5.1
Visual Inspection ........................................................................................................... 15
10.5.2
Electrical Inspection ...................................................................................................... 17
10.5.3
Problem Solving Guide ................................................................................................. 19
10.5.4
No Input Current from the Constant Current Regulator ................................................ 21
10.5.5
Isolation Transformer Information ................................................................................ 22
10.5.6
Isolation Transformer Improperly Sized ....................................................................... 22
10.5.7
Verifying Jumper Settings ............................................................................................. 23
10.6
Replacing LED Strip Assemblies .................................................................................. 23
10.6.1
LED Strip Replacement Procedure ................................................................................ 24
10.7
Replacing Electronics Enclosure Components .............................................................. 25
10.7.1
Power Supply Replacement Procedure .......................................................................... 25
11 Figures and Tables .......................................................................................................... 27
12
Installation Hardware Accessories Technical Information .................................................. 93