Daktronics 4200 Series, Service Manual

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Multi-Direction Light Sensor Testing and Replacement
8.3 Replacing the MDLS
Required Tools: Pliers, side cutters
To replace the MDLS:
1. Disconnect the MDLS from the quick connect on the back of the display (below the
power entrance box).
Note: There may be a splice in the cable between the MDLS and the display back. If so,
disconnect the MDLS cable at the splice point, not at the back of the display.
2. Remove the cable that runs from the quick connect to the MDLS.
3. Remove the two attachment bolts that secure the MDLS assembly to the mounting arm.
4. Reverse Steps 1 - 3 to reinstall a MDLS.
5. Using cable ties, secure the MDLS cable to along the back of the display.
6. Work with the help desk to test the photocell and ensure it is functioning properly.