Daktronics 4000 Series Digital Billboard - Manual (Page 28)

22 R outine Maintenance
Figure 32: Webcam Arm Pivot
5.3 C leaning the Webcam L ens
Clean the camera lens on every visit. Use the retractable webcam arm to pull the webcam
close enough to clean the lens.
1. To move the retractable arm, use a 1- 1 /
16
" socket
wrench to remove the three short bolts from the top of
the elbow assembly. Refer to Figure 34.
Note: Do not remove the long bolts.
2. Use the handle to pivot the webcam arm to the catwalk.
3. Verify the power and signal cables do not get pinched
when pivoting the webcam arm.
4. Carefully clean the webcam lens with a lens-cleaning
wipe or with a clean rag and a glass cleaner.
5. Return the webcam arm to the original position when done servicing the webcam.
6. Replace and tighten the three short bolts.
Note: If you think the lens may be out of focus after the cleaning, call the NOC at 1-877-
325-4357 to ensure the webcam is focused and the image is clear.
5.4 Fan Operation
1. Regularly check fan function. To do so, hold your hand or a piece of light paper above
the fan to detect air movement.
2. Check connections to the power supply. Make sure the fuse is not blown. If the fuse is
not blown, replace the fan. If the fuse is blown, replace it and check fans again.
3. If the fan does not turn or does not operate smoothly, replace it. After replacing 10
percent of the fans, Daktronics recommends replacing all cooling fans to reduce
associated maintenance costs that may incur with increased heat buildup from fan
failure.