Daktronics Valo Digital Billboard - Manual (Page 40)

Routine Maintenance
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Photocell
1. Inspect the photocell. If needed, clean the photocell. For cleaning instructions, refer to
DD1509618 in Appendix A.
2. Test the photocell function. Cover the photocell with an item that will block out all
incoming light. The display content should dim within approximately two minutes.
Figure 14: Photocell Assembly
Webcam
1. If a lift truck is on site, clean the webcam lens with alcohol or lens cleaning wipes.
Refocus the camera as necessary.
2. Check the webcam connections for corrosion. Even if corrosion is not present, dip the
webcam connectors in electrical grease.
Display Cabinet
Note: Some 1000 series displays use air conditioning (a/c) units.
1. Check the entire display cabinet for holes from missing nutserts, and other gaps on
or along the edges of back sheets. Check the rear of the display for holes or gouges.
Fill any gaps or holes with silicone. For gaps larger than 6", insert TEK screws into
the display to shorten the gap length. Apply silicone along the seam and over the
TEK screw heads.
2. Ensure the back sheets and access panels are tight.
3. Verify the silicone where the fan hood meets the back sheet is in good condition.
4. Check the fan hoods to ensure they have the grill covers at the fan hood opening. If
not, replace the fine mesh screen with a grill cover (Daktronics part # 0M-353962).