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Sign controller replacement
■
Hazardous voltage. Contact with high voltage may cause death or serious injury.
WARNING
Always disconnect power to unit prior to service.
Remove the sign controller
1.
Remove power from the sign. Note there may be more than one power source present.
2.
Open the sign. See See "Opening a sign" on page 5-1.
3.
Turn the sign breaker to the OFF position. Note there may be more than one breaker in a sign.
4.
Locate the controller board to be replaced.
5.
Disconnect all cables from the controller board to be replaced.
A
X
2020 RGB F
LPHA
PRESS
RONT
A
F
-M
D
S
CCESS
ULL
ATRIX
ISPLAYS
O
M
IGN
PERATION AND
AINTENANCE
S
IGN CONTROLLER REPLACEMENT
. B)
M
(PN 1523610201
ANUAL
REV
5
5-3
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