Daktronics AB-1600-1.5,2.5 - Manual (Page 68)

4-26 Maintenance & Troubleshooting
• Corrosion
Check the paint and look for corrosion, especially at footing, structural tie points and ground rods.
• Loosened Hardware
Verify fasteners, such as bolts and rivets, have not come loose. Check, tighten, or replace fasteners
as required.
• Water Stains
Check the inside of the cabinet for any sings of water intrusion. Pay special attention to the area
around the lift eyebolt holes
• Electrical Components
Check all electrical components closely for signs of corrosion.
If any of the above conditions exist, take action to correct the situation.
4.11 Periodic Line and Lamp Voltage Checks
Perform line and lamp voltage checks every six months or whenever an event occurs that might affect
line voltage in the area. Such an event might include a large business or factory opening or closing in
the area.
Section 3.3 addresses the checking of line voltage. Section 3.11 addresses the checking of lamp
voltage.
4.12 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 (Daktronics part number CH-1015). Inspect and clean the jacks and plugs thoroughly to
ensure the absence of foreign matter. The presence of dirt or water may cause signal interconnect
problems.
After cleaning the parts, push the plug into a jar of CaiLube (Daktronics part number CH-1019),
ensuring the paste wets the plug to a depth of at least 1/8
˝ on all four sides. Also, check to make sure
all the pinholes of the plug fill with paste and that sufficient past 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 inserting the plug 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 1 oz. jar. Both are in the Tool Kit Accessories package. CaiLube also
comes in an 8 oz. jar (Daktronics part number CH-1021). If requiring additional supplies, contact
Customer Service for ordering information.
4.13 FCC Modem Notice
The optional modem on the Venus 1500 controller complies with Part 68 of the FCC rules and
regulations. With each device shipped, a label contains, among other information, the FCC
Registration number and Ringer Equivalence Number (REN) for this product. The customer must,
upon request, provide this information to the telephone company.
The REN is useful to determine the number of devices that may connect to a telephone line and still
have these devices ring when the number is called. In most, but not all areas, the sum of the RENs of
all of these devices connected to one line should not exceed five. To be certain of the number of
devices that may connect to the line, as determined by the REN, the customer should contact the local
telephone company to determine the maximum REN for the calling area.