5-12
A
LPHA
X
PRESS
2020 RGB F
RONT
A
CCESS
F
ULL
-M
ATRIX
D
ISPLAYS
S
IGN
O
PERATION
AND
M
AINTENANCE
M
ANUAL
(PN 1523610201
REV
.
B
)
Part Re
plac
eme
n
t
LED
DRIVER
BOARD
REPLACEMENT
5
■
LED driver board replacement
Remove the LED driver board
1. Remove power from the sign. Note there may be more than one power source present.
2. Open the sign. 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. Remove the driver assembly screws on the defective driver assembly.
5. Disconnect the cables from the power interface board.
Note: Disconnect the cables in the order shown or damage to sign components may result.
6. Remove the driver assembly and align the new driver assembly:
•
Make sure the new driver assembly has the same orientation as the original one.
•
Leave enough room to connect the cables in the next step.
Install the replacement LED driver board
1. Connect the cables to the power interface board.
Note: Connect the cables in the order shown or damage to sign components may result.
2. Push in the driver assembly until it is fully seated.
3. Close the sign.
4. Return power to the sign.
WARNING
Hazardous voltage.
Contact with high voltage may cause death or serious injury.
Always disconnect power to unit prior to service.
Summary of Contents for AlphaXpress 2020
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