Part replacement
P1509 21 x 125 Line Matrix
28
Front Access Full Matrix LED Sign Maintenance Manual (pn 1507610501 rev. A)
Opening a sign
Separate instructions are provided for opening the 1.75-inch pitch sign. This sign must be opened differently
because it is larger and uses a handle.
➩
To open a 1.07-inch or 1.35-inch pitch sign
1.
Remove power from the sign.
2.
Unhook the four latches securing the front face frame.
Figure 15.
Door latch locations on 1.07-inch and 1.35-inch signs
3.
Lift the front face frame up until the frame’s prop rods lock in place.
Figure 16.
Front face frame and prop rod.
4.
Lift the LED panels up and fasten each to the underside of the front face frame using the quick-release
pin.
Figure 17.
Fastening LED panels
WARNING!
Hazardous voltage. Contact with high voltage may cause serious injury or death. Always
disconnect power to unit prior to servicing.
Door latches
Front face frame
Prop rod
LED panel
Fasten each of the two LED
panels to the front face frame
using the quick-release pin
