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CAUTION
Do not over tighten hex nut on stud retaining bridge rectifier. 8in
max.
(See Figure 18)
adhesive surfaces before installing.
IMPORTANT
When tightening cover screws, do not use power drivers as you may
exceed the maximum torque of
DANGER
When replacing parts inside the circuit box or sign housing, lock out
series circuit po
10.2 Problem Solving Guide
PROBLEM
(P.1) Sign will
not light
No input current. (LEDs on Power
Supply board not lit)
Instruction Manual
AGS-LED
858 LED Series
Sizes 1, 2, 3, 4 and 5
7
CAUTION:
Do not over tighten hex nut on stud retaining bridge rectifier. 8in
(See Figure 18)
Also, remover carriers from thermal pad
adhesive surfaces before installing.
WARNING:
When tightening cover screws, do not use power drivers as you may
exceed the maximum torque of
75 in-lbs
on the cover screws.
DANGER:
When replacing parts inside the circuit box or sign housing, lock out
series circuit po
wer at its source.
POSSIBLE CAUSE
CORRECTIVE ACTION
No input current. (LEDs on Power
Supply board not lit)
Measure input current
according to Sections
10.4
. If the measured input
current is
not within spec (see
Tables 9-11)
, check CCR,
isolation transformer
primary power connections
DOCUMENT 1025
REV. B
Do not over tighten hex nut on stud retaining bridge rectifier. 8in
-lbs
Also, remover carriers from thermal pad
When tightening cover screws, do not use power drivers as you may
on the cover screws.
When replacing parts inside the circuit box or sign housing, lock out
CORRECTIVE ACTION
Measure input current
according to Sections
10.3 and
. If the measured input
not within spec (see
, check CCR,
isolation transformer
, and
primary power connections
.