A
LPHA
PID S
IGN
I
NSTALLATION
AND
M
AINTENANCE
M
ANUAL
(PN 1260600601 R
EV
.
B
)
6-9
Maintenance
6
R
EPLACE
THE
4.2VDC
POWER
SUPPLY
Replace the 4.2VDC power supply
Tools you will need
•
Phillips screwdriver
•
3/8 inch socket or wrench
1. Turn off power. For instructions, see “Turn off power” on page 6-3.
2. Locate the power supply. Two-sided signs contain power supplies in each side of the sign.
3. Disconnect the cables and remove the nuts.
4. Slide the plate up to remove the power supply.
Install the replacement power supply.
1. Slide the plate back into place.
2. Replace the nuts.
3. Reconnect the wires.
4. Position the circuit breaker switch to the ON position.
5. Close the sign.
Remove these screws.
Summary of Contents for Adaptive Alpha Premier
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