Daktronics G-100-7.6-R - Manual (Page 25)

4.3.5 Light Detector
A light detector is located in the bottom of the left flange. The light detector is used
to measure light levels outside the display and, when enabled through the Venus 1500
software, adjusts the brightness level of the LED’s appropriately.
The light detector is mounted on a support flange. To replace the light detector, first
remove the #6 screws attaching the support flange to the inside of the display.
Disconnect the light detector’s wire to the display controller. The light detector is
attached to the support flange with #4 screws, standoffs and nuts. Remove the failed
light detector from the support flange. Reverse these steps to attach the new light
detector.
4.3.6 Fuse
The MDL-7 fuse is located in the left end
of the cabinet, near the display controller
(refer to Figure 18).
Figure 18: Fuse
To replace the fuse, push and turn the fuse
cap, insert the new fuse into the cap and
reattach.
4.4
Controller Address and Test Mode
Maintenance and Troubleshooting
4-5
The controller has a set of “DIP” switches on the side of the controller as
shown in Figure 19. These DIP switches set the hardware address. When
replacing a controller board, be sure to set the DIP switches in the same
address configuration as the defective controller.
Note: A test mode can be activated by setting the DIP switches to address
0 (flip all the switches toward the numbers on the circuit board). The
display’s power must be downed, then reconnected to run the test mode.
Address Switch
1
Switch
2
Switch
3
Switch
4
Switch
5
Switch
6
Switch
7
Switch
8
1 ON OFF OFF OFF OFF OFF OFF OFF
2 OFF ON OFF OFF OFF OFF OFF OFF
3 ON ON OFF OFF OFF OFF OFF OFF
4 OFF OFF ON OFF OFF OFF OFF OFF
5 ON OFF ON OFF OFF OFF OFF OFF
6 OFF ON ON OFF OFF OFF OFF OFF
7 ON ON ON OFF OFF OFF OFF OFF
8 OFF OFF OFF ON OFF OFF OFF OFF
9 ON OFF OFF ON OFF OFF OFF OFF
10 OFF ON OFF ON OFF OFF OFF OFF
Figure 19: DIP
Switches