Daktronics FB-1430, Installation, Maintenance, And Specifications Manual, Page: 49 / 152

9-8 TNMC Maintenance
and Troubleshooting
1. Direct smoke toward the fan inlet and observe where the smoke exits.
2. Check all around the cabinet and the lenses.
3. If smoke does not exit a particular group of lenses, remove the lenses to clean out any debris,
replace the lenses and re-test.
9.11 Structural Inspection
Visual inspection should be done annually to check the paint and look for possible corrosion, especially
at footings, structural tie points, and ground rods. Fasteners should be checked and tightened or
replaced as required.
At least once a year, check the inside of the display for signs of water intrusion (e.g., water stain
marks). Water can enter a display where weatherstripping has come loose or deteriorated. Fasteners
may have come loose, allowing moisture to enter through seams in the display. Also check the top of
the display around the eyebolts to insure that no moisture may enter through loosened fixtures. Check
electronic components closely for signs of corrosion.
9.12 Cleaning the Signal Connectors
If it becomes necessary to remove or replace a signal cable, clean the plugs and the circuit board jacks
with Deoxit
ä
(refer to Section 9.14 for the part number). Inspect and clean the jacks and plugs
thoroughly to ensure the absence of any foreign matter. The presence of dirt or water may cause signal
interconnect problems.
After the parts are cleaned, push the plug into a jar of Cailube
ä
(refer to Section 9.14 for the part
number), ensuring that the paste wets the plug to a depth of at least
1
/
8
" on all four sides. Also check to
make sure that all of the pin holes of the plug are filled with paste and that sufficient paste is present to
form a "V" on the end of the plug. There should be enough paste on the end of the plug to form a
weatherproof seal (from paste pushed out around the jack) when the plug is inserted into the circuit
board jack.
Deoxit is the electrical contact cleaner in an aerosol can and Cailube is the electrical contact lubricant
and protector paste in a 1oz. jar. Both can be found in the
Tool Kit Accessories package. Cailube also
comes in an 8 oz. jar (refer to Section 9.14 for the part number). If additional supplies are needed,
contact Customer Service for ordering information.