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
)
5-15
Part Replacement
5
F
ILTER
REPLACEMENT
■
Filter replacement
•
WARNING
Hazardous voltage.
Contact with high voltage may cause death or serious injury.
Always disconnect power to unit prior to service.
To replace a filter/access the rear
serviceable filter
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. At the back of the sign, use the hex key (for
opening the front display doors) to loosen the
screw on the ventilation housing.
5. Rotate cover down as shown.
6. Remove filter from hook and loop fastener.
7. Insert new or cleaned filter, close the ventilation
housing, and then secure with the hex key.
8. Return power to the sign.
To replace a filter/access the front
serviceable filter
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. Locate the front access filter cover as shown
below.
5. Remove the filter cover by loosening two thumb
screws.
6. Reach in and remove filter.
7. Insert new or cleaned filter.
8. Replace the filter cover and tighten the thumb
screws.
9. Close the sign.
10. Return power to the sign.
Screw
Filter
Thumbs
crews
Summary of Contents for AlphaXpress 2020
Page 51: ......
