Daktronics FB-1430, Installation, Maintenance, And Specifications Manual

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TNMC Maintenance
and Troubleshooting
9-3
Removing a Lampbank
The lampbank is attached to the lens assembly with a metal tab at each corner. To remove the
lampbank:
1. Push in the clips while gently pulling the lampbank out.
2. Repeat this step for the three remaining corners. Lampbanks should be serviced in a static-
free area to prevent static electricity from damaging the components.
Replacing a Lampbank
When lampbanks are reattached to the lens assemblies, be sure the lamp sockets are seated tightly
against the reflectors. All four tabs, one in each corner, must be snapped securely onto the
lampbank. If the lampbank is not secured properly to the lens assembly, the lamp filament will not
be at the focal point of the reflector and parts of that lens assembly will appear dim.
Replacing the Module
To reinstall a lens assembly in the display, refer to Drawing A-75204 :
1. Reconnect power and signal connections to the lampbank.
2. Tilt the module about 30 degrees and place the bottom corners of the side brackets to the
inside of the frame verticals.
3. Push the lens assembly firmly back into place until the latches snap into place and the lens
assembly is secured to the display. It may be necessary to use a solid object, such as a short
length of two-by-four, to properly seat the assembly. Place the two-by-four across the
louvers so the pressure on them is evenly distributed and strike the board with the heel of
your hand. This should drive the assembly in place.
4. Pull firmly on the assembly to ensure that it is fully in place and secured to the display. The
lens assemblies must fit together tightly enough so the weatherstripping forms a seal and
prevents water from leaking between the lens assemblies and into the display. The seal
between the assemblies should be checked with a 0.032" feeler gauge.
5. Snap the lenses back into the faceplate of the lens assembly. If a lens is not replaced
properly, it is easily noticed. The lens removal tab or the lens itself will not be in alignment
with the other lenses or lens tabs.
6. Ensure that the rows of louvers on the lens assembly are in proper alignment.
9.3 Lamp Testing and Replacement
Reference Drawing:
Lens Removal, Front Access.................................................................... Drawing A-99898
This display is designed for easy lamp replacement with front access. Non-functioning lamps should
always be replaced prior to scheduled events, or as soon as possible, for best viewing.