DOCUMENT 1218
REV. B
Instruction Manual
AGS-LED
312 LED Series
300mm and 400mm
19
10.5.3
Problem Solving Guide
Problem
Possible Cause
Corrective Action
P.1 Sign will not light
No input current
from Constant
Current Regulator.
(Power Supply status
LED is not lit)
Check power wires for
current loss between
electrical components and
CCR. Replace faulty
components as needed.
See
Section 10.5.4, pg. 21,
for further explanation of
action steps.
P.2 Sign will not light
Isolation
Transformer is not
sized properly
Replace Isolation
transformer with one of
the correct size. Review
Tables 10 - 16, pgs.
80,
81, 82, 84, 86, 88
& 89
for correct transformer
sizes. See
Section 10.5.4,
pg. 21,
for further
explanation of action
steps.
P.3 Sign will not light
Open circuit in the
LED strip or LED
cable (Power Supply
status LED is
blinking or unlit)
Verify LED cable
connections are properly
seated in their respective
receptacles; reseat if
necessary. See
Figures 48
- 52, pgs. 75-79
, for LED
wiring diagrams.
P.4 Sign will not light
Failed Power Supply
(Power Supply status
LED is blinking or
unlit)
Remove failed power
supply and replace with
new power supply. See
Section
10.7.1, pg. 25
.
P.5 Sign will not light
Short circuit in LED
strip or LED cable
Replace shorted LED
strip(s) or LED Cable(s)
with a new LED strip or
LED cable.
See Section
10.6, pg. 23.
P.6 Sign will not light
Optional ON/OFF
switch is in OFF
position
Turn switch to ON
position.